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JP2003258321A - Sheet type β-FeSi2 element - Google Patents

Sheet type β-FeSi2 element

Info

Publication number
JP2003258321A
JP2003258321A JP2002057519A JP2002057519A JP2003258321A JP 2003258321 A JP2003258321 A JP 2003258321A JP 2002057519 A JP2002057519 A JP 2002057519A JP 2002057519 A JP2002057519 A JP 2002057519A JP 2003258321 A JP2003258321 A JP 2003258321A
Authority
JP
Japan
Prior art keywords
film
fesi
sheet
type
semiconductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002057519A
Other languages
Japanese (ja)
Other versions
JP4140247B2 (en
Inventor
Yunosuke Makita
雄之助 牧田
Yasuhiko Nakayama
靖彦 中山
Masachika Ryu
正新 劉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SYSTEM GIKEN KK
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
SYSTEM GIKEN KK
National Institute of Advanced Industrial Science and Technology AIST
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SYSTEM GIKEN KK, National Institute of Advanced Industrial Science and Technology AIST filed Critical SYSTEM GIKEN KK
Priority to JP2002057519A priority Critical patent/JP4140247B2/en
Publication of JP2003258321A publication Critical patent/JP2003258321A/en
Application granted granted Critical
Publication of JP4140247B2 publication Critical patent/JP4140247B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Photovoltaic Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus which reduces man-hours required for film deposition, electrode formation and protective film formation on a crystal board of a device, which have conventionally been performed in a vacuum apparatus, enhances throughput and reduces manufacturing costs. <P>SOLUTION: The apparatus deposits a film, and forms an electrode and a protective film while depositing a powder raw material on a flexible sheet in the air or an inert gas atmosphere and pressing it by heating roller, thus manufacturing the device in a continuous and an integrated operation is realized. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は光センサー、太陽電
池、熱電変換素子などエレクトロニクス分野における半
導体素子デバイスの技術分野のうち、新しい半導体材料
を使用して素子を簡便に作製する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily manufacturing an element using a new semiconductor material in the technical field of semiconductor element devices in the field of electronics such as photosensors, solar cells, thermoelectric conversion elements.

【0002】[0002]

【従来の技術】従来の半導体デバイスはシリコン(Si)
基板、GaP、GaAs基板やセラミクス平面基板材の上に機
能性の材料薄膜を形成し、その上にフォトリソグラフィ
ー技術や真空プロセスを用いて電気信号の入出力を行う
電極を構成し、また光無反射保護膜を真空プロセスを用
いて製作されている。
2. Description of the Related Art Conventional semiconductor devices are silicon (Si)
A functional material thin film is formed on a substrate, GaP, GaAs substrate or ceramics planar substrate material, and electrodes for inputting and outputting electrical signals are formed on it by using photolithography technology or a vacuum process. The reflection protection film is manufactured using a vacuum process.

【0003】近年、地球資源の豊富で環境に負荷の少な
い材料からなるβ-FeSi2半導体デバイスの使用が提案さ
れ開発が行なわれている。この材料による接合膜作製法
はレーザアブレーション法、イオン注入法、分子線ビー
ムエピタキシャル法、真空蒸着法など真空プロセスによ
るものが多い。一方、電極形成としては従来の金属膜蒸
着法に代えて、β-FeSi2材料特有の高温で金属結晶相に
変換する効果を利用する方法があり、レーザアニール法
(特願2001−157087、2001−23566
4)によって金属電極フォトリソグラフ形成を除去する
方法が提案されている。更に光無反射保護膜作製は従来
の真空中製膜プロセスによるSiO2を用いる手法がなされ
てきた。
In recent years, the use of β-FeSi 2 semiconductor devices made of materials that are rich in earth resources and have low environmental impact have been proposed and developed. The bonding film forming method using this material is often a vacuum process such as a laser ablation method, an ion implantation method, a molecular beam epitaxial method, or a vacuum deposition method. On the other hand, as an electrode formation, there is a method of utilizing an effect of converting to a metal crystal phase at a high temperature peculiar to a β-FeSi 2 material instead of the conventional metal film vapor deposition method, and a laser annealing method (Japanese Patent Application No. 2001-157087, 2001). -23566
According to 4), a method of eliminating the metal electrode photolithography formation has been proposed. Furthermore, the method of using SiO 2 by the conventional vacuum film forming process has been used for the production of the light non-reflection protective film.

【0004】[0004]

【発明の解決しようとする課題】従来の素子作成に関し
ては各種工程について以下のような課題を持っていた。 素子の基板には単結晶Siが使用されるので、価格が
高い。太陽電池のように極低価格で素子を作る必然性の
ある場合には、単結晶Siを使用するのでは材料コストや
製造コストが高い。 多結晶Si基板を使用する場合には、多結晶基板原料
となる不純物濃度の高い、いわゆる低級品Siくずの量が
供給に間に合わないので原料入手難である。 Siや化合物で特性の良い半導体接合層を作るには、
高真空中で高度に成長を制御できる高価な装置を使用す
るので、スループットは低くコストが高くなる。 電極形成に金属膜フォトリソグラフ法やレーザアニ
ール法を使用すると、高価な装置が必要であるし、スル
ープットも大きく出来ない。 光無反射保護膜を形成する場合に、真空工程を使用
すると装置コストがかかってしまうし、スループットが
装置の内容積によって制限を受けてしまう。
Regarding the conventional device fabrication, there were the following problems in various steps. Since single crystal Si is used for the substrate of the device, the price is high. When it is necessary to manufacture an element at an extremely low price like a solar cell, using single crystal Si requires high material cost and manufacturing cost. When a polycrystalline Si substrate is used, it is difficult to obtain the raw material because the amount of so-called low-grade Si scrap having a high impurity concentration, which is a raw material for the polycrystalline substrate, cannot be supplied in time. To make a semiconductor junction layer with good characteristics using Si or compounds,
Throughput is low and cost is high due to the use of expensive equipment with highly controllable growth in high vacuum. If a metal film photolithography method or a laser annealing method is used for electrode formation, an expensive apparatus is required and throughput cannot be increased. If a vacuum process is used to form the light non-reflective protective film, the cost of the device increases, and the throughput is limited by the internal volume of the device.

【0005】[0005]

【課題を解決するための手段】上記課題を占めている多
くの原因は、製作コストが高くなるという点にある。本
発明では、素子製造の工程中に、真空や高出力レーザな
ど大掛かりな装置を使わず、高価な単結晶素材などを使
用しない素子形成を行うことである。すなわち、半導体
薄膜を形成してn−pの接合を作るときに単結晶基板を
使用せず、粉体堆積膜から熱反応で半導体膜を形成する
手法を採用する。電極形成はβ-FeSi2膜の一部を高温に
曝して金属化する現象を利用してパターン形成する。保
護膜形成のために使用する高価な装置を用いない工程を
取り入れる。素子全体の製造スル−プットを上げるため
に、各工程を連続で処理できる一貫システムを採用する
ことにより、課題を解決した。
Many of the causes of the above problems are high manufacturing costs. The present invention is to form an element during the element manufacturing process without using a large-scale device such as a vacuum or a high-power laser and without using an expensive single crystal material or the like. That is, a method of forming a semiconductor film from a powder deposition film by a thermal reaction is adopted without using a single crystal substrate when forming a semiconductor thin film to form an np junction. Electrodes are formed by utilizing the phenomenon that a part of the β-FeSi 2 film is exposed to high temperature and metallized. A process that does not use expensive equipment used for forming a protective film is incorporated. The problem was solved by adopting an integrated system that can process each process continuously in order to increase the manufacturing throughput of the entire device.

【0006】[請求項1の発明の実施の形態]図1は本
発明に従う可撓性を持つ基板上にβ-FeSi2半導体を用い
たデバイス素子の模式図である。素子を構成する基板1
は、可撓性のあるシート材料を用いている。この基板1
上に、β-FeSi2半導体のn型の特性を持つ薄膜22が積
層している。この半導体膜の基板側には、下地電極とな
る薄膜層11が存在する。更にn型半導体膜2の上に、
β-FeSi2半導体のp型の特性を持つ薄膜32が積層して
おり、下層にあるn型とp型の薄膜が接合部分23を形
成している。このp型薄膜32の上面側には、電極71
が構成されている。更にこのp型薄膜の上から、反射防
止膜となる誘電体薄膜42が積層されている。この誘電
体薄膜42の一部は剥ぎ取られた部分8があり、その部
分に露出した電極71には電流や電圧を取り出す電極リ
ード線81が接着固定されている。リード線81は電圧
電流計82に接続されている。なお、下地の半導体膜を
n型とし上に乗せる膜をp型としているが、nとpを反
対に構成しても良い。可撓性シートにポリイミドのよう
な高分子シートを用いた場合は、請求項3の実施形態に相
当する。
[Embodiment of the Invention of Claim 1] FIG. 1 is a schematic view of a device element using a β-FeSi 2 semiconductor on a flexible substrate according to the present invention. Substrate 1 that constitutes an element
Uses a flexible sheet material. This board 1
A thin film 22 of a β-FeSi 2 semiconductor having an n-type characteristic is laminated on top. A thin film layer 11 serving as a base electrode is present on the substrate side of this semiconductor film. Furthermore, on the n-type semiconductor film 2,
Thin films 32 of p-FeSi 2 semiconductor having p-type characteristics are stacked, and the underlying n-type and p-type thin films form a joint portion 23. An electrode 71 is provided on the upper surface side of the p-type thin film 32.
Is configured. Further, a dielectric thin film 42 serving as an antireflection film is laminated on the p-type thin film. A part 8 of the dielectric thin film 42 is stripped off, and an electrode lead wire 81 for taking out a current or a voltage is adhesively fixed to the electrode 71 exposed at that part. The lead wire 81 is connected to the voltmeter 82. Although the underlying semiconductor film is n-type and the overlying film is p-type, n and p may be reversed. The case of using a polymer sheet such as polyimide for the flexible sheet corresponds to the embodiment of claim 3.

【0007】[請求項2の発明の実施の形態]図1に示
した可撓性シート材料として、ステンレススチールのよ
うな金属薄板を用いたのが請求項2の発明の実施形態で
あり、この場合には下地電極11は必要なく、下地基板
1が下地電極を兼ねる。
[Embodiment of the Invention of Claim 2] According to the embodiment of the invention of Claim 2, a thin metal plate such as stainless steel is used as the flexible sheet material shown in FIG. In this case, the base electrode 11 is not necessary, and the base substrate 1 also serves as the base electrode.

【0008】[請求項3の発明の実施の形態]図1に示
した可撓性シート材料として、ポリイミドまたはフッ素
樹脂のような高分子樹脂フィルムを用いたのが請求項2
の発明の実施形態であり、この場合には下地電極11に
はAuやAlをフィルムに蒸着した膜を用いる。
[Embodiment of the Invention of Claim 3] As the flexible sheet material shown in FIG. 1, a polymer resin film such as polyimide or fluororesin is used.
In this case, the base electrode 11 uses a film obtained by vapor-depositing Au or Al on the film.

【0009】[請求項4の発明の実施の形態]p型及び
n型β-FeSi2半導体薄膜を作る本発明の請求項4及び請
求項5の実施方法を示すのが図2、図3である。図2は下
地シート材が絶縁体を用いた場合のp-型β-FeSi2薄膜の
製法を示したものである。ポリイミド製シート1にはあ
らかじめ金やアルミニウム等の導電性薄膜11を蒸着し
てあり、これはデバイスにした時の電極となる。この金
属箔付きシート上に、原料となるFe及びSi粉体21を堆
積するが、原料粉体中にはp-型性質を作る第3元素とし
てAlやMnを添加したものを用いる。これらの混合粉体2
1を均一にシート1上に堆積して粉体層2にするには、
混合粉体を溶媒で溶いてスプレー塗布で行ったり、ドク
ターブレード法で塗布する。シート1上の粉体層2は、
矢印7の方向に移動するうちに乾燥し、加熱ロール5に
到達する。この加熱ロール5はあらかじめ937℃以下
に加熱されている。この温度はβ-FeSi2相を形成するの
に必要な温度で、この温度を超えてはならない。通常9
00〜920℃位に保つ。この加熱ロールは矢印51の
方向に回転してシート1上の粉体層2を押圧しており、
粉体がローラに接して加熱移動される間に固体反応を起
こしp-型のβ-FeSi2相22が生成する。このようにして
p-β-FeSi2薄膜の付着した可撓性シートが完成する。
[Embodiment of the Invention of Claim 4] FIGS. 2 and 3 show a method for implementing p-type and n-type β-FeSi 2 semiconductor thin films according to claims 4 and 5 of the present invention. is there. Figure 2 shows the manufacturing method of the p-type β-FeSi 2 thin film when the underlying sheet material is an insulator. A conductive thin film 11 such as gold or aluminum is vapor-deposited on the polyimide sheet 1 in advance, and this becomes an electrode when it is used as a device. Fe and Si powders 21, which are raw materials, are deposited on the sheet with metal foil, and the raw material powders to which Al or Mn is added as a third element that creates p-type properties are used. These mixed powder 2
1 is uniformly deposited on the sheet 1 to form the powder layer 2,
The mixed powder is dissolved in a solvent and spray coating is performed, or a doctor blade method is used. The powder layer 2 on the sheet 1 is
As it moves in the direction of arrow 7, it dries and reaches the heating roll 5. The heating roll 5 has been heated to 937 ° C. or lower in advance. This temperature is the temperature required to form the β-FeSi 2 phase and must not be exceeded. Usually 9
Keep at around 0 to 920 ° C. This heating roll rotates in the direction of arrow 51 and presses the powder layer 2 on the sheet 1,
While the powder contacts the roller and is heated and moved, a solid reaction occurs to generate a p-type β-FeSi 2 phase 22. In this way
The flexible sheet with the p-β-FeSi 2 thin film attached is completed.

【0010】β-FeSi2半導体層のp/n接合層を作る本
発明の請求項5の実施方法を示すのが図3である。可撓
性下地シート上にp-型β-FeSi2膜22が形成されている
シートを下地として、この上にβ-FeSi2薄膜の原料とな
るFe及びSi粉体31を堆積するが、原料粉体中にはn-型
性質を作る第3元素としてCoやNiを添加したものを用い
る。これらの混合粉体31を均一にp-β-FeSi2膜2上に
堆積して塗布層3にするには、混合粉体を溶媒で溶いて
スプレー塗布で行ったり、ドクターブレード法で塗布す
る。シート1上の粉体層3は、矢印7の方向に移動する
うちに乾燥し、加熱ロール5に流入する。この加熱ロー
ル5はあらかじめ937℃以下に加熱されている。この
温度はβ-FeSi2相を形成するのに必要な温度で、この温
度を超えてはならない。通常900〜920℃位に保
つ。この加熱ロールは矢印51の方向に回転してシート
1上の粉体層3を押圧しており、粉体がローラに接して
加熱移動される間に固体反応を起こしn-型のβ-FeSi2
相32が生成する。このときp型のβ-FeSi2膜22に接
してn型の接合面が構成するわけである。このようにし
てp-β-FeSi2薄膜とn-β-FeSi2薄膜による接合面が構
成された可撓性シートが完成する。
FIG. 3 shows a method for implementing the fifth aspect of the present invention for forming a p / n junction layer of a β-FeSi 2 semiconductor layer. The sheet having the p-type β-FeSi 2 film 22 formed on the flexible base sheet is used as a base, and Fe and Si powder 31, which is a raw material of the β-FeSi 2 thin film, is deposited on the sheet. The powder contains Co and Ni added as the third element that creates the n-type property. In order to uniformly deposit these mixed powders 31 on the p-β-FeSi 2 film 2 to form the coating layer 3, the mixed powders may be dissolved in a solvent and spray coating may be performed, or a doctor blade method may be used. . The powder layer 3 on the sheet 1 dries while moving in the direction of the arrow 7 and flows into the heating roll 5. The heating roll 5 has been heated to 937 ° C. or lower in advance. This temperature is the temperature required to form the β-FeSi 2 phase and must not be exceeded. Usually, it is maintained at about 900 to 920 ° C. This heating roll rotates in the direction of arrow 51 and presses the powder layer 3 on the sheet 1, and a solid reaction occurs while the powder contacts the roller and is heated and moved, so that n-type β-FeSi is produced. 2
Phase 32 forms. At this time, an n-type bonding surface is formed in contact with the p-type β-FeSi 2 film 22. In this way, a flexible sheet having a joint surface composed of the p-β-FeSi 2 thin film and the n-β-FeSi 2 thin film is completed.

【0011】[請求項6の発明の実施の形態]β-FeSi2
薄膜上に電極を形成する本発明の請求項6の実施方法を
示すのが図4である。接合面を構成した2種類のβ-FeSi2
薄膜22,32が付着した可撓性シート1が、矢印61
の方向に回転している電極形成用の加熱ローラ6に押圧
され、矢印7の方向に流れて行く。この電極形成用加熱
ローラ6には、後に電極パターン形状となるように彫刻
が施された突起状彫刻7が付いており、この突起は982
度以上になるように加熱されている。通常この温度は9
90℃〜1100℃である。突起状彫刻7に接触押圧さ
れ982℃以上に過熱されたn-β-FeSi2膜の表面部分は
α-Fe2Si5相に変換し、この相が金属相であるから電気
伝導がよく、半導体膜表面上のデバイス電極71ができ
る。この電極作製法はパターン電極を真空蒸着したり、
リフトオフなどの真空工程を用いないので工程が簡略化
でき、故障の少ないメリットを生じる。
[Embodiment of the Invention of Claim 6] β-FeSi 2
FIG. 4 shows a method for carrying out claim 6 of the present invention in which an electrode is formed on a thin film. Two types of β-FeSi 2 forming the joint surface
The flexible sheet 1 to which the thin films 22 and 32 are attached is indicated by an arrow 61.
It is pressed by the heating roller 6 for electrode formation which is rotating in the direction of and flows in the direction of arrow 7. The heating roller 6 for electrode formation is provided with a protrusion-shaped engraving 7 engraved so as to have an electrode pattern shape later.
It is heated so that it becomes more than a degree. Usually this temperature is 9
The temperature is 90 ° C to 1100 ° C. The surface of the n-β-FeSi 2 film, which was pressed by contact with the protrusion-shaped engraving 7 and overheated to 982 ° C. or higher, was converted into an α-Fe 2 Si 5 phase, and this phase is a metal phase, so that the electric conductivity was good, A device electrode 71 is formed on the surface of the semiconductor film. This electrode manufacturing method, vacuum deposition of pattern electrodes,
Since a vacuum process such as lift-off is not used, the process can be simplified and there is a merit that there are few failures.

【0012】可撓性シート上に形成されたデバイス上に
光無反射保護膜を形成する本発明の請求項7の実施方法
を示すのが図5である。光無反射膜は、透明誘電体の薄
膜を一般的には屈折率の異なる材質で複数枚重ねて作
る。SiやSn、Zn、Zr、Tiなど無機物の水酸塩や硝酸塩を
溶媒で希釈したインクをスプレーガン43に装着する。
可撓性シート1上にβ-FeSi2接合膜32が乗り、その一
部に金属化電極パターン71が構成されたデバイスシー
トが矢印7の方向に流れている。そこへスプレーガン4
3に装着したインク41を噴霧してデバイス上に堆積さ
せ、乾燥後連続焼成炉9中を通過する。この間を通過す
る際に堆積層は200−400℃に過熱されて反応し、
酸化膜42が形成される。多層の光無反射膜を構成する
には、この工程を繰り返せばよい。なお、粉体積層膜を
形成する方法としてドクターブレード法を用いても良
い。また、加熱方法としてランプ加熱法や熱ローラ押圧
法でもよい。
FIG. 5 shows a method for carrying out claim 7 of the present invention in which a light non-reflective protective film is formed on a device formed on a flexible sheet. The light non-reflective film is generally formed by stacking a plurality of transparent dielectric thin films made of materials having different refractive indexes. An ink obtained by diluting a hydroxide or nitrate of an inorganic substance such as Si, Sn, Zn, Zr, or Ti with a solvent is attached to the spray gun 43.
The β-FeSi 2 bonding film 32 rides on the flexible sheet 1, and the device sheet in which the metallized electrode pattern 71 is formed in a part thereof flows in the direction of arrow 7. Spray gun 4 there
The ink 41 attached to No. 3 is sprayed to be deposited on the device, dried, and then passed through the continuous firing furnace 9. When passing through this period, the deposited layer is heated to 200-400 ° C. and reacts,
The oxide film 42 is formed. This step may be repeated to form a multilayer light non-reflective film. A doctor blade method may be used as a method for forming the powder laminated film. A lamp heating method or a heat roller pressing method may be used as the heating method.

【0013】可撓性シート上に連続してβ-FeSi2半導体
デバイスを製造する本発明の請求項8の実施方法を示す
のが図6(A)、図6(B)である。送り出しロール15
に可撓性シート材料が巻き込まれており、デバイスの基
体となるシートフィルムが矢印16の方向に回転して流
れ、各種製造工程を経て巻取りロール18に矢印19の
方向に回転して巻き取られる。図6(A)に於いては送
り出しロールから出たフィルム1の上に、第1の工程と
して原料粉2を堆積し加熱ロール4によって第1層のβ-F
eSi2半導体膜22を形成する。次に第2の工程として半
導体接合面を形成するために、半導体膜22とは極性の異
なる原料粉を堆積し加熱ロール5によって第2層のβ-FeS
i2半導体膜32を形成する。接合膜のできた半導体膜
は、次の第3工程に入る。すなわち電極形成用加熱ロー
ラ6によって押圧された後には、膜上の一部が金属化し
た電極パターン71が形成されている。更に次の工程は図
6(B)に繋がる。第4工程に入ると、スプレーによっ
て誘電体水酸化物原料41が堆積し、加熱炉9を通過す
る間に反応が起こり光無反射保護膜42が形成され、デ
バイス素子の機能部分本体部が出来上がる。更にこれら
の膜は巻取りロール18に導かれ、矢印19方向に回転し
ているのでロールに巻き取られて生産工程を終える。
FIGS. 6 (A) and 6 (B) show a method for carrying out claim 8 of the present invention for continuously producing β-FeSi 2 semiconductor devices on a flexible sheet. Sending roll 15
The flexible sheet material is wound around the sheet, and the sheet film serving as the base of the device rotates and flows in the direction of arrow 16, and after various manufacturing steps, rotates in the direction of arrow 19 and is wound up by the winding roll 18. To be In FIG. 6 (A), the raw material powder 2 is deposited on the film 1 discharged from the delivery roll as the first step and the β-F of the first layer is heated by the heating roll 4.
The eSi 2 semiconductor film 22 is formed. Next, as a second step, in order to form a semiconductor junction surface, a raw material powder having a polarity different from that of the semiconductor film 22 is deposited and the second layer of β-FeS is heated by the heating roll 5.
The i 2 semiconductor film 32 is formed. The semiconductor film having the bonding film enters the next third step. That is, after being pressed by the electrode forming heating roller 6, the electrode pattern 71 in which a part of the film is metallized is formed. Further, the next step is connected to FIG. In the fourth step, the dielectric hydroxide raw material 41 is deposited by spraying and a reaction occurs while passing through the heating furnace 9 to form the light non-reflection protective film 42, and the functional portion main body of the device element is completed. . Further, these films are guided to the take-up roll 18 and are rotated in the direction of arrow 19, so that the film is taken up by the roll to complete the production process.

【0014】[0014]

【発明の特徴と従来技術】従来のβ-FeSi2半導体を用い
たデバイス素子は、基板として半導体特性を持った単結
晶や多結晶のシリコン板を用いていた。又は基板として
焼結セラミクスやガラスをもちい、その上にアモスファ
スシリコンやIII―V化合物半導体を積層していた。それ
に対して、本特許の素子に用いる基板材料としては、可
撓性のあるステンレススチールなどの金属板や、廉価で
耐熱性のあるポリイミドシートである。これらの材料は
シリコン基板に較べると、大変廉価である。また十分に
大面積が取れるし、長尺ものが得られるので巻き取った
ロール形態を用いて連続加工することができる。単結晶
や無機物焼結体などのように、大きさの制限を受けるこ
とが無い。また、大面積の素子を構成して取り付け加工
をする場合に、可撓性があるので破損することが無く、
工作しやすい。
Features and Prior Art A conventional device element using a β-FeSi 2 semiconductor uses a single crystal or polycrystalline silicon plate having semiconductor characteristics as a substrate. Alternatively, sintered ceramics or glass is used as a substrate, and amosphas silicon or III-V compound semiconductor is laminated thereon. On the other hand, the substrate material used in the device of the present patent is a flexible metal plate such as stainless steel or a cheap and heat-resistant polyimide sheet. These materials are much cheaper than silicon substrates. Moreover, since a sufficiently large area can be obtained and a long product can be obtained, continuous processing can be performed using a rolled roll form. There is no size restriction like single crystals or inorganic sintered bodies. In addition, when a device having a large area is formed and mounting is performed, since it has flexibility, it is not damaged,
Easy to work with.

【0015】基板材料として金属薄板を用いた場合に
は、可撓性や廉価の特長のほかに、薄板自体が下地基板
側の電極を兼用するという特徴も有する。一方、基板材
料として直接ポリイミドなど有機絶縁材料を用いた場合
には、基板1の上に、あらかじめ表面に金やアルミニウ
ム箔などを蒸着したフィルムを用いたり、β-FeSi2半導
体膜に熱加工を加えて、部分的に金属層変化させた部分
を電極としたものを用いる。この金属膜を敷いたフィル
ムは、蒸着法により装飾フィルムとして多量に安価入手
できる。
When a metal thin plate is used as the substrate material, in addition to the advantages of flexibility and low price, the thin plate itself also serves as an electrode on the side of the base substrate. On the other hand, when an organic insulating material such as polyimide is directly used as the substrate material, a film on which gold or aluminum foil has been vapor-deposited on the surface is used on the substrate 1, or the β-FeSi 2 semiconductor film is heat-processed. In addition, an electrode in which a portion where the metal layer is partially changed is used is used. A large amount of the film provided with the metal film can be obtained as a decorative film at a low cost by a vapor deposition method.

【0016】本特許のもう一方の特徴は、その製造プロ
セスにある。請求項4以降の製膜方法、電極形成方法、
保護膜形成法、一貫生産プロセスラインとも、真空系を
使わず日常工場の環境で連続作業生産ができるのが特徴
である。これはベース基板に可撓性のある材料を用い、
生産加工工程も日常使用されているような容易で使い古
された技術だけで成り立っているからである。従来の半
導体素子生産のように、単結晶板やセラミクス基板を用
いたのでは、フィルムを流すような生産方式は採用が難
しい。ベースフィルムをロールから送り出し、出来上が
る製品をロールに巻き取るプロセスを採用できることに
より、スループットも上がり製造装置の管理コストも低
減できる特徴をもつ。
Another feature of this patent lies in its manufacturing process. A film forming method and an electrode forming method according to claim 4,
Both the protective film forming method and the integrated production process line are characterized in that continuous work production can be performed in the environment of a daily factory without using a vacuum system. This uses a flexible material for the base substrate,
This is because the production and processing steps are made up of only easy and worn-out techniques that are used on a daily basis. If a single crystal plate or a ceramic substrate is used as in the conventional semiconductor device production, it is difficult to adopt a production method in which a film is flown. By adopting a process in which the base film is sent out from a roll and the finished product is wound up on a roll, the throughput is increased and the management cost of manufacturing equipment can be reduced.

【0017】[0017]

【発明の効果】本発明では、デバイスを構成する基板を
可撓性のある材料を用いたので、ロールからの送り出し
巻取りが可能となり、デバイスを構成する部品作成プロ
セスが空気中で連続生産可能な方式になったので、全て
の作製プロセスが一貫して連続生産できるようになり、
結果として製品の製作コストを大幅に低減できるように
なった。
According to the present invention, since the substrate forming the device is made of a flexible material, it can be fed out from the roll and wound, and the parts forming process of the device can be continuously produced in air. Since it became a system, all the manufacturing processes can be consistently produced continuously,
As a result, it has become possible to significantly reduce the manufacturing cost of the product.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に従う可撓性を持つ基板上にβ-FeSi2
導体を用いたデバイス素子の構成模式図。
FIG. 1 is a schematic configuration diagram of a device element using a β-FeSi 2 semiconductor on a flexible substrate according to the present invention.

【図2】本発明の可撓性を持つ基板上に第1層のβ-FeSi
2薄膜を作る工程の模式図。
FIG. 2 shows the first layer of β-FeSi on the flexible substrate of the present invention.
2 Schematic diagram of the process of making a thin film.

【図3】本発明の可撓性を持つ基板上に第2層のβ-FeS
i2薄膜を作り、接合面を作る工程の模式図。
FIG. 3 is the second layer of β-FeS on the flexible substrate of the present invention.
Schematic diagram of the process of making the i 2 thin film and making the joint surface.

【図4】本発明の可撓性を持つ基板上に作製されたβ-F
eSi2半導体薄膜上に、デバイス電極パターンを作る工程
の模式図。
FIG. 4 β-F fabricated on a flexible substrate of the present invention
Schematic diagram of the process of forming a device electrode pattern on an eSi 2 semiconductor thin film.

【図5】本発明の可撓性を持つ基板上に出来上がったデ
バイス上に、光無反射保護膜を作る工程の模式図。
FIG. 5 is a schematic view of a process of forming a light non-reflection protective film on a device completed on a flexible substrate of the present invention.

【図6】本発明の可撓性を持つ基板上に、半導体膜製
作、接合面製作、電極製作、光無反射保護膜製作の各プ
ロセスを一貫し、デバイスを連続ラインで作る工程の模
式図。
FIG. 6 is a schematic diagram of a process of making a device in a continuous line by integrating each process of semiconductor film production, bonding surface production, electrode production, and light non-reflection protective film production on a flexible substrate of the present invention. .

【符号の説明】[Explanation of symbols]

1・・・・可撓性基板 11・・・・金属薄膜 15・・・・送り出しローラ 16・・・・ローラの回転方向 17・・・・基板シートの流れる方向 18・・・・巻取りローラ 19・・・・ローラの回転方向 2・・・・第1の半導体の粉体堆積層 21・・・・原料粉末 22・・・・第1の半導体薄膜 23・・・・p/n接合面 3・・・・第2の半導体の粉末堆積層 31・・・・原料粉末 32・・・・第2の半導体薄膜 4・・・・光無反射保護膜の粉体堆積層 41・・・・原料粉末 42・・・・光無反射保護膜 43・・・・スプレーガン 5・・・・加熱ローラ 51・・・・加熱ローラの回転方向 6・・・・電極形成ローラ 61・・・・電極形成ローラの回転方向 7・・・・電極突起彫刻 71・・・・電極パターン 8・・・・保護膜が剥ぎ取られた部分 81・・・・リード線 82・・・・出力測定器 9・・・・連続加熱炉 1 ... Flexible substrate 11 ... Metal thin film 15 ... Delivery roller 16 ... Roller rotation direction 17 .... Flow direction of substrate sheet 18 ... Winding roller 19 ... Roller rotation direction 2 ... Powder deposition layer of the first semiconductor 21 ... Raw powder 22 ... First semiconductor thin film 23 ... P / n junction surface 3 ... Powder deposition layer of second semiconductor 31 ··· Raw powder 32 ... Second semiconductor thin film 4 ... Powder deposition layer of light non-reflective protective film 41 ... Raw powder 42 ... Light-reflective protective film 43 ... Spray gun 5 ... Heating roller 51 ... ・ Rotation direction of heating roller 6 ... Electrode forming roller 61 .... Rotation direction of electrode forming roller 7 .... Engraving of electrode protrusions 71 ... Electrode pattern 8 ... The part where the protective film is stripped off 81 ... Lead wire 82 ... Output measuring instrument 9 ... Continuous heating furnace

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) H01L 35/34 H01L 31/04 E (72)発明者 中山 靖彦 神奈川県川崎市宮前区けやき平1−41− 103 (72)発明者 劉 正新 茨城県つくば市竹園三丁目24番の1 512 棟406号 Fターム(参考) 5F051 AA03 AA07 BA14 CB13 CB24 CB27 DA03 FA06 GA02 GA05─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) H01L 35/34 H01L 31/04 E (72) Inventor Yasuhiko Nakayama 1-41 Keyakidaira, Miyamae-ku, Kawasaki-shi, Kanagawa 103 (72) Inventor, Mr. Liu, Xin Xin, 1 512 Building No. 406, 3-24-3 Takezono, Tsukuba City, Ibaraki Prefecture 406 F term (reference) 5F051 AA03 AA07 BA14 CB13 CB24 CB27 DA03 FA06 GA02 GA05

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 可撓性シート上にp型およびn型特性をも
つ2種類のβ-FeSi2半導体薄膜からなる接合素子を構成
し、該接合薄膜素子の一部をα-Fe2Si5金属膜化して電
極とし、さらにその表面に表面保護層として透明誘電体
膜を設けてデバイス機能を持ったシート型β-FeSi2
子。
1. A junction element comprising two types of β-FeSi 2 semiconductor thin films having p-type and n-type characteristics on a flexible sheet, and a part of the junction thin-film element is α-Fe 2 Si 5 A sheet-type β-FeSi 2 device with a device function by forming a metal film into an electrode and then providing a transparent dielectric film on the surface as a surface protection layer.
【請求項2】 可撓性シートとして、鉄、ニッケル、銅
単体またはそれらの合金、またはそれらを主成分として
1種類以上の添加元素を含んだ合金からなる金属薄板を
用いる請求項1記載のシート型β-FeSi2素子。
2. A flexible sheet comprising iron, nickel, copper alone or an alloy thereof, or containing them as a main component.
The sheet type β-FeSi 2 device according to claim 1, wherein a thin metal plate made of an alloy containing one or more kinds of additional elements is used.
【請求項3】 可撓性シートとしてポリイミドまたはフ
ッ素樹脂フィルムを用いる請求項1記載のシート型β-F
eSi2素子。
3. The sheet type β-F according to claim 1, wherein a polyimide or fluororesin film is used as the flexible sheet.
eSi 2 device.
【請求項4】 可撓性シート上に、原材料原子比率が略
1:2となるFeとSiに不純物を添加して溶解・固化・粉
砕して微粉にしたものを、スプレー法または印刷塗布法
で塗布乾燥して一様の厚みに堆積し、それを500〜9
80℃の温度に加熱反応させてβ-FeSi2半導体薄膜を形
成する。さらにその上に先の半導体膜とは反対の特性を
示す不純物を添加した、原材料原子比率が略1:2とな
るFeとSiを溶解・固化・粉砕して微粉にしたものを、ス
プレー法または印刷塗布法でシート上に一様の厚みで堆
積し、それを500〜980℃に加熱反応させてβ-FeS
i2半導体薄膜を形成し、最終的にp−n接合界面を構成
したβ−FeSi2半導体薄膜を形成する方法。
4. A spray method or a print coating method, which is obtained by adding impurities to Fe and Si having a raw material atomic ratio of about 1: 2, dissolving, solidifying, and pulverizing them into a fine powder on a flexible sheet. Coating and drying to deposit a uniform thickness,
A β-FeSi 2 semiconductor thin film is formed by heating and reacting at a temperature of 80 ° C. Further, an impurity exhibiting the opposite characteristics to the semiconductor film is added thereto, and Fe and Si having a raw material atomic ratio of about 1: 2 are dissolved, solidified, and pulverized into a fine powder, which is then sprayed or It is deposited with a uniform thickness on the sheet by the printing coating method, and it is heated to 500 to 980 ° C to react with β-FeS.
A method of forming an i 2 semiconductor thin film and finally forming a β-FeSi 2 semiconductor thin film having a pn junction interface.
【請求項5】 可撓性シート上に堆積したFeとSi成分か
らなる混合粉を、β-FeSi2相に反応形成する手法とし
て、500〜980℃の高温に過熱した熱ローラをシー
ト上に堆積した粉末層に非酸化雰囲気中で押圧し、この
手法によってp−n接合界面を持った半導体薄膜を連続
熱処理製膜する請求項4記載の製膜装置。
5. A heat roller heated to a high temperature of 500 to 980 ° C. is formed on a sheet as a method for reacting and forming a mixed powder composed of Fe and Si components deposited on a flexible sheet into a β-FeSi 2 phase. The film forming apparatus according to claim 4, wherein the deposited powder layer is pressed in a non-oxidizing atmosphere, and a semiconductor thin film having a pn junction interface is continuously heat-treated by this method.
【請求項6】 後に電極となるパターン形状に彫刻が施
された金属又はセラミクスローラが加熱されており、こ
のローラをβ-FeSi2半導体膜が形成されて連続走行する
フィルム上に押圧することによって、ローラに触れた部
分を電極化する請求項1記載の電極製造装置。
6. A metal or ceramics roller engraved in a pattern shape to be an electrode later is heated, and the roller is pressed against a film on which a β-FeSi 2 semiconductor film is formed and which runs continuously. 2. The electrode manufacturing apparatus according to claim 1, wherein the portion touching the roller is made into an electrode.
【請求項7】 シリコンや錫、亜鉛、ジルコニアなど無
機物の水酸塩や硝酸塩を溶媒で希釈したインクをスプレ
ー法又は塗布印刷法によって、連続走行する可撓性シー
ト上に形成されたβ-FeSi2半導体素子表面に極薄く堆積
し、その後連続焼成炉やフラッシュランプ加熱光下を通
過させたり、または高温に加熱した熱ローラを押圧する
ことによって透明誘電体薄膜を形成し無反射光保護膜と
なす請求項1記載のシート型β-FeSi2素子作成方法。
7. A β-FeSi formed on a continuously running flexible sheet by spraying or coating printing an ink prepared by diluting a hydroxide or nitrate of an inorganic substance such as silicon, tin, zinc or zirconia with a solvent. 2 A very thin layer is deposited on the surface of the semiconductor device, and then it is passed through a continuous firing furnace or under the flash lamp heating light, or by pressing a hot roller heated to a high temperature, a transparent dielectric thin film is formed to form an anti-reflection light protective film. A method for producing a sheet-type β-FeSi 2 element according to claim 1.
【請求項8】 巻取りロールから送り出された可撓性シ
ート上に、p型又はn型特性を持つ粉末を堆積する工程
と、シートの流れる先で堆積した粉末層に加熱ローラを
押圧しながら連続的にβ-FeSi2半導体薄膜を形成する工
程と、更にシートの流れる先にパターンが刻印できる加
熱ローラによって、該半導体薄膜の一部を金属α-Fe2Si
5化して電極とする工程と、更にシートの流れる先にゾ
ルーゲル薄層を敷き熱ローラ又は加熱炉の中を通過させ
ることによって透明誘電体膜を作製する工程を設けて、
これらプロセスを一貫して連続的に流してデバイスを製
造するシート型β-FeSi2素子製造装置。
8. A step of depositing powder having p-type or n-type characteristics on a flexible sheet delivered from a winding roll, and pressing a heating roller against the powder layer deposited at the destination of the sheet flow. A step of continuously forming a β-FeSi 2 semiconductor thin film and a heating roller capable of engraving a pattern at the sheet flowing point further cause a part of the semiconductor thin film to be a metal α-Fe 2 Si
A step of the 5 turned into the electrode, a step of preparing a transparent dielectric film by causing further pass through the previously sol-gel thin layer spread heat roller or a heating furnace of flow of the sheet is provided,
Sheet-type β-FeSi 2 device manufacturing equipment that manufactures devices by consistently and continuously flowing these processes.
JP2002057519A 2002-03-04 2002-03-04 Sheet type β-FeSi2 element Expired - Fee Related JP4140247B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6943388B1 (en) 2004-03-18 2005-09-13 National Institute Of Advanced Industrial Science And Technology Sheet-type β-FeSi2 element, and method and device for manufacturing the same
JP5761172B2 (en) * 2010-02-25 2015-08-12 産機電業株式会社 Method for producing solar cell using silicon powder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6943388B1 (en) 2004-03-18 2005-09-13 National Institute Of Advanced Industrial Science And Technology Sheet-type β-FeSi2 element, and method and device for manufacturing the same
JP5761172B2 (en) * 2010-02-25 2015-08-12 産機電業株式会社 Method for producing solar cell using silicon powder

Also Published As

Publication number Publication date
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