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JPS6157907B2 - - Google Patents

Info

Publication number
JPS6157907B2
JPS6157907B2 JP13990682A JP13990682A JPS6157907B2 JP S6157907 B2 JPS6157907 B2 JP S6157907B2 JP 13990682 A JP13990682 A JP 13990682A JP 13990682 A JP13990682 A JP 13990682A JP S6157907 B2 JPS6157907 B2 JP S6157907B2
Authority
JP
Japan
Prior art keywords
evaporation source
crucible
capsule
evaporated
evaporation
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.)
Expired
Application number
JP13990682A
Other languages
Japanese (ja)
Other versions
JPS5931865A (en
Inventor
Chikara Hayashi
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.)
Ulvac Inc
Original Assignee
Ulvac Inc
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 Ulvac Inc filed Critical Ulvac Inc
Priority to JP13990682A priority Critical patent/JPS5931865A/en
Publication of JPS5931865A publication Critical patent/JPS5931865A/en
Publication of JPS6157907B2 publication Critical patent/JPS6157907B2/ja
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24Vacuum evaporation
    • C23C14/28Vacuum evaporation by wave energy or particle radiation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Vapour Deposition (AREA)

Description

【発明の詳細な説明】 本発明は新規な蒸発源、特に定量の蒸発物質を
収容したカプセル型蒸発源に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel evaporation source, particularly a capsule-type evaporation source containing a fixed amount of evaporation material.

従来公知の蒸発源は、被蒸発物質からなるフイ
ラメント又は被蒸発物質を収容したボートに通電
して被蒸発物質の温度を上昇させ、蒸着を行う構
造のものが多く使用されている。これら公知の蒸
発源はフイラメント部,通電部の複雑な絶縁構造
が必要であり、更にフイラメントの断線及び絶縁
不良等の不測の事故が多く、信頼性のある蒸発源
とは認められず、更に、1個の形状が大型であり
多数個の蒸発源を使用する必要がある場合には被
蒸着基板近くに配置できず、一定量の膜厚を形成
する際多量の蒸発物質を必要とする等の諸欠点が
ある。
Many conventionally known evaporation sources have a structure in which a filament made of a substance to be evaporated or a boat containing the substance to be evaporated is energized to raise the temperature of the substance to be evaporated, thereby performing evaporation. These known evaporation sources require a complicated insulation structure for the filament part and the current-carrying part, and there are many unexpected accidents such as filament breakage and poor insulation, so they are not recognized as reliable evaporation sources. If the shape of one evaporation source is large and it is necessary to use multiple evaporation sources, it may not be possible to place them near the substrate to be evaporated, and a large amount of evaporation material may be required to form a certain amount of film thickness. There are various drawbacks.

公知の蒸発源の前述の如き諸欠点を改良すべく
種々検討の結果、光フアイバー機構によるレーザ
ー光を利用する新規な構成のカプセル型蒸発源の
開発に成功したものであり、本発明は前記特許請
求の範囲各項に明記した如き構成からなるカプセ
ル型蒸発源を提供するものである。
As a result of various studies aimed at improving the above-mentioned drawbacks of known evaporation sources, we have succeeded in developing a capsule-type evaporation source with a new configuration that utilizes laser light with an optical fiber mechanism, and the present invention is disclosed in the above-mentioned patent. The object of the present invention is to provide a capsule-type evaporation source having the structure specified in each claim.

本発明の実施態様の数例を示す添付図面に基い
て更に詳細に説明する。
The invention will now be described in more detail with reference to the accompanying drawings, which show some examples of embodiments of the invention.

第1図は本発明カプセル型蒸発源の例を示す断
面図であり、1はレーザー光を吸収し又は透過し
得る材料からなるルツボである。尚、レーザー光
を吸収し得る材料としては炭素又黒鉛、透過し得
る材料としては石英等である。第1図Aは黒鉛ル
ツボであり、例えばランサー(Lancer)レーザ
ー等の加熱により容易に破壊し得る材料からなる
トツプシール2により被蒸発物質3を封止してあ
る。第1図Bは石英ルツボであり、ルツボ頂部は
加熱又はルツボ加熱時に発生する内圧により容易
に破壊し得るように石英薄膜からなるトツプシー
ル1′として封止した態様を示す。
FIG. 1 is a sectional view showing an example of the capsule type evaporation source of the present invention, and 1 is a crucible made of a material that can absorb or transmit laser light. Note that materials that can absorb laser light include carbon or graphite, and materials that can transmit laser light include quartz. FIG. 1A shows a graphite crucible in which a substance to be evaporated 3 is sealed with a top seal 2 made of a material that can be easily destroyed by heating with a Lancer laser or the like. FIG. 1B shows a quartz crucible in which the top of the crucible is sealed as a top seal 1' made of a thin quartz film so that it can be easily destroyed by heating or internal pressure generated during heating of the crucible.

前記トツプシールは蒸発物を大気に触れさせな
いで清浄に保つため使用する。トツプシールによ
つて蒸発物は真空に保持されるかもしくは不活性
なNe,Arガス中に保持される。蒸発物を大気に
触れさせると、蒸発物の加熱蒸着中に放出ガスが
多くて蒸着した薄膜中に不純物が入り込む場合、
あるいは蒸発物が活性で容易に酸素と反応する場
合に有効である。このトツプシールは石英ルツボ
の場合には溶融して真空に封じ切る形で形成する
ことができる(第1図Bに図示)。黒鉛ルツボで
はトツプシールを不活性ガス中でルツボにネジ込
む蓋状とし、蓋の中央部を容易に破壊しうる薄膜
状とすることが有利である。更にこれらシールし
たルツボ全体を不活性ガス雰囲気の容器内に装
入、保管し、大気からの蒸発物質の汚染を更に低
減することが好ましい。これらトツプシールの材
質としては使用するルツボに用いられる材料と同
質であることが好ましい。
The top seal is used to keep the evaporated matter clean by preventing it from coming into contact with the atmosphere. The top seal keeps the evaporated material in a vacuum or in an inert Ne, Ar gas. When the evaporated material is exposed to the atmosphere, a large amount of gas is released during the heated vapor deposition of the evaporated material and impurities enter the deposited thin film.
Alternatively, it is effective when the vapor is active and easily reacts with oxygen. In the case of a quartz crucible, this top seal can be formed by melting it and sealing it in a vacuum (as shown in FIG. 1B). For graphite crucibles, it is advantageous for the top seal to be in the form of a lid that is screwed onto the crucible in an inert gas, with the central part of the lid being in the form of a thin film that can be easily broken. Furthermore, it is preferable that the entire sealed crucible be placed and stored in a container with an inert gas atmosphere to further reduce contamination by evaporated substances from the atmosphere. The material of these top seals is preferably the same as the material used for the crucible used.

本発明のカプセル型蒸発源は上記の如き構成か
らなつており、レーザー光による蒸発源としての
使用態様を第2図〜第6図に基いて説明する。
The capsule type evaporation source of the present invention has the above-mentioned configuration, and its usage as an evaporation source using laser light will be explained with reference to FIGS. 2 to 6.

第2図はレーザー光をルツボ1の側面から照射
する場合の断面略図である。被蒸発物質3を装入
し、トツプシール2で封止したルツボ1を、水冷
シユラウド4内に熱シールド5を介して保持す
る。水冷シユラウド4及び熱シールド5を貫通し
たレーザー光照射窓6を設け、光フアイバー7よ
り照射されるレーザー光8を集束レンズ9等によ
り集束して、前記ルツボ1の側壁に照射し、ルツ
ボ1壁を加熱するか又はルツボ壁を透過して被蒸
発物質を加熱して蒸発させる構成としてある。
FIG. 2 is a schematic cross-sectional view when laser light is irradiated from the side of the crucible 1. A crucible 1 charged with a substance to be evaporated 3 and sealed with a top seal 2 is held in a water-cooled shroud 4 via a heat shield 5. A laser light irradiation window 6 is provided which penetrates the water cooling shroud 4 and the heat shield 5, and the laser light 8 emitted from the optical fiber 7 is focused by a focusing lens 9 or the like and irradiated onto the side wall of the crucible 1. The structure is such that the material to be evaporated is heated and evaporated by passing through the crucible wall.

第3図は第2図と同様であるが、レーザー光8
をルツボ底部より照射する構成としたものであ
り、同一符号は同一部材を示している。尚、第3
図において10は断熱セラミツクスである。
Figure 3 is the same as Figure 2, but the laser beam 8
The structure is such that the light is irradiated from the bottom of the crucible, and the same reference numerals indicate the same members. Furthermore, the third
In the figure, 10 is a heat insulating ceramic.

第4図〜第6図は本発明蒸発源の使用態様の数
例を示す略図であり、第4図は本発明蒸発源11
3個を被蒸着基板12に対して求心状に配設した
例であり、前述した如く本発明蒸発源は極めて小
型化し得るので、蒸発源群11と基板12との距
離Lを例えば60mmと小さくすることができ、更に
蒸発源群の設置幅を約100mmのスペースにするこ
とができ、従つて、蒸発物質の無駄を少なくし、
効率よく基板面に蒸着膜を生成することができ
る。第4図において13は過冷却コンデンサーで
あり、各蒸発源11間に配設することにより蒸発
源間相互の汚染防止の作用をなすものである。
FIG. 4 to FIG. 6 are schematic diagrams showing several examples of usage of the evaporation source of the present invention, and FIG.
This is an example in which three evaporation sources are arranged centripetally with respect to the substrate 12 to be evaporated, and as mentioned above, the evaporation source of the present invention can be extremely miniaturized, so the distance L between the evaporation source group 11 and the substrate 12 is as small as, for example, 60 mm. Furthermore, the installation width of the evaporation source group can be reduced to approximately 100 mm, thus reducing the waste of evaporation material.
A deposited film can be efficiently produced on the substrate surface. In FIG. 4, reference numeral 13 denotes a subcooling condenser, which is arranged between each evaporation source 11 to prevent mutual contamination between the evaporation sources.

第5図は本発明蒸発源11を過冷却コンデンサ
ー13を介して併設した例を示し、第4図図示の
例と同様に蒸発源11と基板12間の距離を小と
し、かつ各蒸発源11を設置幅を小さくすること
ができ、更に基板12又は蒸発源11の何れかを
移動することにより基板12上に異種の金属膜又
は合金膜を蒸着させることもできる。
FIG. 5 shows an example in which the evaporation sources 11 of the present invention are installed together via a supercooling condenser 13, in which the distance between the evaporation sources 11 and the substrate 12 is shortened similarly to the example shown in FIG. Furthermore, by moving either the substrate 12 or the evaporation source 11, a different type of metal film or alloy film can be deposited on the substrate 12.

第6図は本発明の小型蒸発源11をマニピユレ
ータ14の先端部に保持し、マスク15との併用
によつて基板12の特定の位置に蒸発源11を移
動させながら蒸着膜を成長させ得る例を示す略図
である。
FIG. 6 shows an example in which the small-sized evaporation source 11 of the present invention is held at the tip of the manipulator 14, and a deposited film can be grown while moving the evaporation source 11 to a specific position on the substrate 12 by using it together with a mask 15. FIG.

第2図図示の直径10mmφのグラフアイトルツボ
に0.5gの砒素(As)を装入し、2×10-10トール
にルツボ内を減圧したのち、50Wのヤグ
(YAG)レーザーを照射してルツボ全体を加熱し
た。この時ルツボ全体の最高温度は630℃であつ
た。ルツボ温度が300℃の時にルツボの上方150mm
の位置でAsの蒸気分圧は1×10-6トールであ
り、基板(GaAs)にGaとともにAsが蒸着され、
光IC用として適したGaAs膜の成長に充分な蒸気
分圧が得られた。
0.5 g of arsenic (As) was charged into a graphite crucible with a diameter of 10 mmφ as shown in Figure 2, and the pressure inside the crucible was reduced to 2 × 10 -10 Torr.The crucible was then irradiated with a 50 W YAG laser. The whole thing was heated. At this time, the maximum temperature of the entire crucible was 630°C. 150mm above the crucible when the crucible temperature is 300℃
The vapor partial pressure of As at the position is 1 × 10 -6 Torr, and As is evaporated together with Ga on the substrate (GaAs),
A sufficient vapor partial pressure was obtained to grow a GaAs film suitable for optical ICs.

第7図は本発明蒸発源のトツプシール部の溶融
除去用としての集光機構の一例を示す略図であ
る。前後進しうるマニピユレータ20の先端にレ
ンズホルダ22とそれに連結した光フアイバー2
1を具備し、レンズホルダ22を図示の如くルツ
ボ1に接近させ、光フアイバー21からのレーザ
ー光をレンズ23で集束させることによりトツプ
シール部を溶融させて除去するものである。蒸発
操作開始前にこの集光機構は待機位置に復帰させ
る機構としてある。
FIG. 7 is a schematic diagram showing an example of a light condensing mechanism for melting and removing the top seal portion of the evaporation source of the present invention. A lens holder 22 and an optical fiber 2 connected to the lens holder 22 are attached to the tip of a manipulator 20 that can move forward and backward.
1, a lens holder 22 is brought close to the crucible 1 as shown in the figure, and the laser beam from the optical fiber 21 is focused by the lens 23 to melt and remove the top seal portion. This light collecting mechanism is designed to return to the standby position before starting the evaporation operation.

以上詳述した通り、本発明蒸発源は構造が簡単
であつて、小型の蒸発源とすることができ、従つ
て蒸発源と基板間の距離を小さくし得、蒸発源群
を小さいスペースに併設することもできるので、
蒸発物質を無駄なく利用することができる。又、
狭いスペースに蒸発源を配列できるので異種の蒸
発物質を同時に使用して複合薄膜層又は合金膜を
容易に成長させることができる等、従来品にみら
れない作用効果を奏し得るものである。
As detailed above, the evaporation source of the present invention has a simple structure and can be made into a small evaporation source. Therefore, the distance between the evaporation source and the substrate can be shortened, and a group of evaporation sources can be installed in a small space. You can also do
Evaporated substances can be used without waste. or,
Since evaporation sources can be arranged in a narrow space, different types of evaporation substances can be used simultaneously to easily grow a composite thin film layer or an alloy film, and other effects not seen in conventional products can be achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明のカプセル型蒸発源の例を示す
断面略図、第2図,第3図は本発明カプセル型蒸
発源にレーザー光を照射する態様を示す図、第4
図〜第6図は本発明カプセル型蒸発源の使用例を
示す配置略図、第7図は本発明蒸発源用の集光機
構の略図であり、図中、1はルツボ、2はトツプ
シール、3は被蒸発物質、4は水冷シユラウド、
5は熱シールド、6は照射窓、7は光フアイバ
ー、8はレーザー光、9は集光レンズ、10は断
熱セラミツクス、11は蒸発源群、12は基板、
13は過冷却コンデンサー、14はマニピユレー
タ、15はマスクをそれぞれ示す。
FIG. 1 is a schematic cross-sectional view showing an example of the capsule-type evaporation source of the present invention, FIGS.
6 to 6 are schematic layout diagrams showing usage examples of the capsule-type evaporation source of the present invention, and FIG. 7 is a schematic diagram of the condensing mechanism for the evaporation source of the present invention. In the figures, 1 is a crucible, 2 is a top seal, 3 is the evaporable substance, 4 is the water cooling shroud,
5 is a heat shield, 6 is an irradiation window, 7 is an optical fiber, 8 is a laser beam, 9 is a condensing lens, 10 is a heat insulating ceramic, 11 is an evaporation source group, 12 is a substrate,
13 is a supercooled condenser, 14 is a manipulator, and 15 is a mask.

Claims (1)

【特許請求の範囲】 1 レーザー光の殆どを吸収又は透過し得る材料
からなり被蒸発物質を装入したルツボに、加熱又
は内圧により容易に破壊し得るトツプシールを設
けたことを特徴とするカプセル型蒸発源。 2 ルツボへのレーザー光照射用光フアイバー機
構を付設した特許請求の範囲第1項記載のカプセ
ル型蒸発源。 3 前記蒸発源のトツプシール部への集光機構を
併設した特許請求の範囲第1項記載のカプセル型
蒸発源。 4 前記トツプシール材料は前記ルツボに用いら
れる材料の何れかと同一材質である特許請求の範
囲第1項記載のカプセル型蒸発源。
[Claims] 1. A capsule type characterized in that a crucible made of a material capable of absorbing or transmitting most of laser light and charged with a substance to be evaporated is provided with a top seal that can be easily destroyed by heating or internal pressure. Evaporation source. 2. The capsule-type evaporation source according to claim 1, which is provided with an optical fiber mechanism for irradiating the crucible with laser light. 3. The capsule-type evaporation source according to claim 1, further comprising a light condensing mechanism for the top seal portion of the evaporation source. 4. The capsule-type evaporation source according to claim 1, wherein the top seal material is the same material as any of the materials used for the crucible.
JP13990682A 1982-08-13 1982-08-13 Capsule type evaporating source Granted JPS5931865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13990682A JPS5931865A (en) 1982-08-13 1982-08-13 Capsule type evaporating source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13990682A JPS5931865A (en) 1982-08-13 1982-08-13 Capsule type evaporating source

Publications (2)

Publication Number Publication Date
JPS5931865A JPS5931865A (en) 1984-02-21
JPS6157907B2 true JPS6157907B2 (en) 1986-12-09

Family

ID=15256377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13990682A Granted JPS5931865A (en) 1982-08-13 1982-08-13 Capsule type evaporating source

Country Status (1)

Country Link
JP (1) JPS5931865A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396809U (en) * 1986-12-12 1988-06-22

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63137162A (en) * 1986-11-28 1988-06-09 Mitsubishi Electric Corp Apparatus for forming multilayered film by vapor deposition with laser
CN101106901B (en) * 2004-12-24 2011-05-11 代表Hj家族的胡纳私人控股有限公司 Reducing by-catch of seabirds
EP1939320B1 (en) * 2005-12-07 2013-08-21 Novaled AG Method of vapour deposition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396809U (en) * 1986-12-12 1988-06-22

Also Published As

Publication number Publication date
JPS5931865A (en) 1984-02-21

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