WO2015182581A1 - 空隙形成用組成物、その組成物を用いて形成された空隙を具備した半導体装置、およびその組成物を用いた半導体装置の製造方法 - Google Patents
空隙形成用組成物、その組成物を用いて形成された空隙を具備した半導体装置、およびその組成物を用いた半導体装置の製造方法 Download PDFInfo
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/31—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain
- C08G2261/316—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain bridged by heteroatoms, e.g. N, P, Si or B
- C08G2261/3162—Arylamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
- C08G2650/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group
- C08G2650/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group containing ketone groups, e.g. polyarylethylketones, PEEK or PEK
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/02—Polyamines
- C08G73/026—Wholly aromatic polyamines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a void forming composition capable of easily forming a void structure between metal wirings in a semiconductor element or the like, and a void forming method between metal wirings using the composition.
- a silica (SiO 2 ) film formed by a vacuum process such as a CVD method is frequently used as an interlayer insulating film in a semiconductor element or the like.
- a coating type insulating film called SOG (Spin on Glass) film containing a hydrolysis product of tetraalkoxylane as a main component is also used.
- SOG Spin on Glass
- Patent Documents 1, 2, and 3 As a method for reducing the parasitic capacitance between wirings, for example, a semiconductor device in which a gap is formed between wirings as described in Patent Documents 1, 2, and 3 has been proposed.
- a filling such as an organic resist or a silica compound
- the filling is removed by etching or ashing to form a gap between the metal wirings.
- Patent Documents 4, 5, and 6 have proposed fillers used to form gaps between wirings.
- these fillers have not enough thermal stability at around 400 ° C., and the parasitic capacitance between wirings cannot be sufficiently reduced, so there is room for improvement.
- the present invention has been made in view of the above circumstances, and provides a void-forming composition having a specific heat-resistant temperature and a specific thermal decomposition temperature, and a method for manufacturing a semiconductor device using the same.
- the void-forming composition according to the present invention is Following formula (1): Or the following formula (2): [Where: Ar 1 , Ar 2 , and Ar 2 ′ are each independently an aromatic group containing one or more benzene rings, wherein the aromatic group is alkyl, aryl, alkoxy, nitro, amide, dialkylamino, sulfonamido, Optionally substituted with a substituent selected from the group consisting of imide, carboxy, sulfonate, alkylamino, and arylamino; L 1 and L 2 are each independently oxygen, sulfur, alkylene, sulfone, imide, carbonyl, or the following general formula (3): ⁇ Where, Ar 3 is an aromatic group containing one or more benzene rings, wherein the aromatic group is alkyl, aryl, alkoxy, nitro, amide, dialkylamino, sulfonamide, imide, carboxy, sulfonate ester, alkylamino, and Optionally
- a method for forming a gap between wirings includes a step of coating a surface of a porous insulating film formed on a semiconductor substrate with the composition for forming a gap, and the composition for forming a gap on the semiconductor substrate.
- a void is formed between the metal wirings by the step of embedding in the metal and the step of removing the void forming composition.
- voids can be easily formed between multilayer wirings by applying a void-forming composition containing a polymer having a specific heat-resistant temperature and a specific thermal decomposition temperature to the porous material.
- a semiconductor device having desired characteristics can be easily manufactured.
- FIGS. 1A to 1D are schematic cross-sectional views showing a part of a method for manufacturing a semiconductor device according to an embodiment of the present invention.
- the present invention relates to a void forming composition.
- the void forming composition is a composition for forming voids between metal wirings of a substrate in the manufacturing process of a semiconductor device. More specifically, it has the property that it can be filled with voids and vacancies on the substrate surface, is stable below a certain temperature, and can be easily removed by vaporization when exceeding a certain temperature. is there.
- This void forming composition comprises a specific polymer and a solvent.
- Ar 1 , Ar 2 , and Ar 2 ′ are aromatic groups containing one or more benzene rings. These aromatic groups preferably contain only one benzene ring, but may contain condensed aromatic rings such as naphthalene ring and anthracene ring.
- Ar 1 , Ar 2 , and Ar 2 ′ are divalent groups, but the position of the bond is not particularly limited, and may be any of the o-position, m-position, and p-position. Good. However, it is preferable to have two bonds at the p-position from the viewpoint of ease of synthesis and heat resistance.
- Ar 1 , Ar 2 , and Ar 2 ′ may have a substituent.
- the substituent is selected from the group consisting of alkyl, aryl, alkoxy, nitro, amide, dialkylamino, sulfonamide, carboxy, sulfonate ester, alkylamino, and arylamino, but if this substituent is too bulky Since the properties due to the polymer main chain may be impaired, the number of carbon atoms contained in the substituent is preferably 10 or less.
- L 1 and L 2 are linking groups that bind the aromatic rings.
- the linking group is selected from oxygen, sulfur, alkylene, sulfone, imide, and carbonyl.
- the linking group is alkylene, a relatively short alkylene group having 1 to 3 carbon atoms is preferred.
- the coupling group represented by General formula (3) may be sufficient.
- Ar 3 is selected from an aromatic group (but a monovalent group) having the same structure as Ar 1 or the like. When Ar 3 further has an aromatic group as a substituent, the polymer has a so-called branched chain structure.
- the polymer used in the present invention preferably has a linear structure.
- L 3 is selected from any of nitrogen, boron, and phosphorus, and is not particularly limited. Among these, nitrogen or boron is preferable from the viewpoint of availability of the polymer or ease of synthesis.
- the molecular weight of the polymer that can be used in the present invention can be arbitrarily adjusted according to the purpose.
- the mass average molecular weight is preferably 1,000 to 1,000,000, and more preferably 3,000 to 500,000.
- the mass average molecular weight refers to a polystyrene equivalent mass average molecular weight.
- the molecular weight distribution of a polymer is small from the viewpoints of penetrability when a composition is applied and uniformity of a film to be formed.
- the void forming composition according to the present invention contains a solvent. This solvent needs to be able to dissolve the polymer.
- THF, GBL, NMP, DMAC, cyclohexanone, chlorobenzene, chloroform, or toluene is preferable from the viewpoint of solubility
- THF, GBL, cyclohexanone, chlorobenzene, or toluene is preferable from the viewpoint of applicability.
- THF, GBL, NMP, DMAC, and a mixed solvent of cyclohexanone and chlorobenzene are preferable.
- the void-forming composition according to the present invention essentially comprises the polymer and the solvent.
- the content of the polymer contained in the composition is appropriately adjusted according to the size of the target void, the viscosity of the composition, etc., but generally 0.2 to It is 20% by mass, preferably 0.3 to 10% by mass, more preferably 0.5 to 5% by mass.
- the void forming composition according to the present invention may contain other components as required.
- a surfactant any conventionally known surfactant can be used, and an alkylene glycol chain-containing surfactant is particularly preferable.
- these additives do not affect the performance of the composition for forming a fine pattern, and are generally 1% or less, preferably 0.1% or less, more preferably based on the total mass of the composition. Is 0.05% or less.
- the void forming composition according to the present invention needs to permeate into narrow trenches or small vacancies, so that the viscosity may have an important meaning.
- the viscosity of the composition is appropriately adjusted according to the purpose of use.
- the composition after coating can be allowed to permeate into the pores by lowering the viscosity under high temperature conditions. In such a case, even a composition having a relatively high viscosity at room temperature can be sufficiently penetrated into the pores.
- Method for forming gap between wiring and method for manufacturing semiconductor device According to the method for forming a gap between wirings and the method for manufacturing a semiconductor device according to the present invention, a material having a gap, a hole, a groove, a recess, or the like that has been formed in advance is protected in the process of manufacturing the semiconductor device.
- such materials are collectively referred to as a porous material.
- Many of the low dielectric constant materials to which the present invention is applied are porous materials having a plurality of pores. That is, since such a porous material has a low density, it is easily damaged physically or chemically when subjected to, for example, a dry etching process.
- the edge part is easy to receive a physical or chemical damage compared with a flat part.
- the second method according to the present invention prevents such damage. Such a method is described below with reference to the drawings.
- the void forming composition 101 is applied to the surface of the porous material 100 (FIG. 1A).
- the porous material include materials made of silicon dioxide or polyamide.
- the size and porosity of the pores or voids formed in the porous material vary depending on the performance required for the target semiconductor device, but generally the average diameter of the pores is 100 nm. Or less, preferably 40 nm or less. In general, the porosity is 5 to 70%, preferably 5 to 50%.
- the average diameter of the pores can be measured by observing with a transmission electron microscope (TEM), and the porosity can be obtained by calculating according to the logarithmic mixing law using the dielectric constant.
- TEM transmission electron microscope
- the void forming composition applied to the surface of the porous material 100 penetrates into the porous material over time and fills the pores, but the penetration can be accelerated by pressurization or heating. It is particularly preferable to warm. This is because the viscosity of the composition decreases due to the temperature rise, and the penetration into the pores is accelerated. In addition, it is preferable to select a solvent to be used in consideration of applicability and permeability of the void forming composition.
- the porous material 100 is sufficiently infiltrated with the void-forming composition and then heated or the like to evaporate a part or all of the solvent in the composition to solidify the composition in the pores, so that the sacrificial material 101A Convert to Thereafter, the sacrificial material exposed on the surface is removed as necessary, and a porous material in which the pores are filled with the sacrificial material is obtained (FIG. 1B). This filled hole portion becomes a sacrificial region.
- the surface of the material is processed by plasma etching or dry etching to form a concave portion such as the groove structure 103 (FIG. 1C).
- plasma etching or dry etching employed for surface processing of the porous material is performed under conditions different from the plasma processing performed when the sacrificial material is removed.
- the porous material is made of silicon dioxide, CF 4 , CHF 3 , and a mixed gas thereof are generally selected as gases used for dry etching.
- the voids are filled with the sacrificial material, the entire material has high mechanical strength, and thus is not easily damaged by lithography, plasma etching, or dry etching.
- the trench structure 103 is filled with a metal material by, for example, chemical vapor deposition to form a metal wiring, and then the sacrificial material is selectively removed.
- the method for selectively removing the sacrificial material is not particularly limited. However, the method for removing the sacrificial material by heating, the method for removing the sacrificial material by plasma treatment, the method for removing the sacrificial material by dissolving it with a solvent that dissolves the sacrificial material, and the high energy A method of removing by irradiating the wire is preferable, and heating is particularly preferable.
- the sacrificial material 101A filled in the holes can be decomposed and vaporized and removed by heating the entire material (FIG. 1D).
- the sacrificial region returns to the hollow state and the gap 104 is formed.
- a porous material whose surface is processed can be obtained without causing damage in the process of plasma etching or dry etching. Since a semiconductor device manufactured using a porous material that is not damaged as described above has few defects, it can be manufactured with high productivity.
- the void forming composition is preferably excellent in coating properties and permeability into a porous material.
- a nonpolar solvent such as MIBK is preferably used as the solvent.
- the molecular weight of the polymer contained in the composition can be adjusted. In such a case, the mass average molecular weight of the polymer is generally 1,000 to 150,000, preferably 1,500 to 50,000. Further, it is preferable that the plasma etching or the dry etching is not decomposed and vaporized but is completely decomposed and vaporized by the subsequent heating.
- the temperature at which the sacrificial material decomposes and vaporizes is adjusted accordingly.
- the sacrificial material does not substantially decompose and vaporize at, for example, 400 ° C., and substantially completely decomposes and vaporizes at, for example, 600 ° C.
- the weight loss when the sacrificial material is heated at 400 ° C. for 1 hour in an inert gas atmosphere or air is preferably 5% or less, more preferably 3% or less, and 600
- the weight loss upon heating at 1 ° C. for 1 hour is preferably 80% or more, and more preferably 90% or more.
- the sacrificial material formed from this composition is substantially composed of the above-mentioned polymer. For this reason, the weight reduction of the sacrificial material and the weight reduction of the polymer itself substantially coincide.
- the reaction solution was poured into acetone (54000 parts), and the powder was filtered.
- the powder was dissolved in chloroform (4000 parts), the insoluble part was removed by filtration, and a 1% by mass aqueous ammonia solution (4000 parts) was added to the filtrate to extract the chloroform solution. Further, the chloroform solution was concentrated, the solution was poured into acetone (54000 parts), the powder was filtered, and vacuum dried at 90 ° C. to obtain 85 parts (yield: 40%) of polymer P1.
- the prepared void forming composition was applied onto a porous SiO 2 wafer by spin coating, and heated on a vacuum hot plate at 150 ° C. in a nitrogen atmosphere for 5 minutes to obtain a void forming polymer thin film.
- the weight reduction of the void forming polymer thin film was measured by the above-mentioned method, the weight reduction when heated at 400 ° C. (in an air atmosphere) for 1 hour was 0.03%, and 1% at 600 ° C. (in air atmosphere). The weight loss upon heating for 9 hours was 99.23%.
- the void forming polymer thin film was heated on a vacuum hot plate at 330 ° C. in a nitrogen atmosphere for 5 minutes to embed the void forming polymer thin film in a porous SiO 2 wafer. Furthermore, the excess polymer film for void formation on the porous SiO 2 wafer was removed by rinsing with the prepared solvent cyclohexanone for 20 seconds. As a result of measuring the porous SiO 2 wafer embedded with the void forming polymer thin film with a spectroscopic ellipsometer, the refractive index (n value) at a wavelength of 633 nm was 1.46. Furthermore, as a result of measuring the porous SiO 2 wafer after heating for 1 minute at 400 ° C.
- the refractive index (n value) at a wavelength of 633 nm was 1.46. Further, the void forming polymer thin film was thermally decomposed by heating in an air atmosphere at 600 ° C. for 1 hour. As a result of measuring the porous SiO 2 wafer after thermal decomposition with a spectroscopic ellipsometer, the refractive index (n value) at a wavelength of 633 nm is 1.31, and the refractive index of the untreated porous SiO 2 wafer (n Value).
- Examples 2-7 and Comparative Examples 1-2 Compositions of Examples 2 to 7 and Comparative Examples 1 to 2 were prepared and evaluated in the same manner as in Example 1 except that the components of the void forming composition were changed as shown in Table 1. The obtained results were as shown in Table 1.
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Abstract
Description
下記式(1):
Ar1、Ar2、およびAr2’はそれぞれ独立に、1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、イミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L1~L2はそれぞれ独立に、酸素、硫黄、アルキレン、スルホン、イミド、カルボニルもしくは下記一般式(3):
Ar3は1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、イミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L3は窒素、ホウ素、およびリンからなる群から選択される3価原子である。}からなる群から選択される。]
で表される少なくとも1種の繰り返し単位を5つ以上含むポリマーと、
溶剤と、
を含んでいることを特徴とするものである。
本発明は空隙形成用組成物に関するものである。ここで、空隙形成用組成物とは、半導体装置の製造過程などにおいて、基板の金属配線間などに空隙を形成させるための組成物である。より具体的には、基板表面の空隙や空孔などを充填することができ、その後一定の温度以下では安定であり、一定の温度を超えると気化などにより容易に除去できるという性質を有するものである。
この空隙形成用組成物は、特定のポリマーと溶剤とを含んでなる。この特定のポリマーは、
下記式(1):
下記式(2):
Ar1、Ar2、およびAr2’はそれぞれ独立に、1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L1およびL2はそれぞれ独立に、酸素、硫黄、アルキレン、スルホン、イミド、カルボニルもしくは下記一般式(3):
Ar3は1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、イミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L3は窒素、ホウ素、およびリンからなる群から選択される3価原子である。}からなる群から選択される。]
で表される少なくとも1種の繰り返し単位を含むものである。このポリマーは、前記の繰り返し単位を5つ以上含んでいる。また、繰り返し単位を2種類以上含む場合には、繰り返し単位をランダムに含むランダムポリマーであっても、各繰り返し単位のブロックを含むブロックコポリマーであってもよい。また、このポリマーは、本発明の効果を損なわない範囲で前記した繰り返し単位とは異なる繰り返し単位を含んでいてもよい。
本発明による配線間の空隙形成方法および半導体装置の製造方法は、あらかじめ形成されていた空隙、空孔、溝、凹部などを有する材料を、半導体装置の製造過程において保護するものである。本発明においては、このような材料を総称して多孔質材料という。本発明を適用しようとする低誘電率材料の多くは複数の空孔を有する多孔質材料である。すなわち、そのような多孔質材料は密度が低いために、たとえばドライエッチング処理などを施すと、物理的または化学的に損傷を受けやすい。また、材料中に空孔が含まれる材料は、その表面に空孔に起因する凹部などが散在するが、その縁部は平坦部分に比較して、物理的または化学的に損傷を受けやすい。本発明による第二の方法は、そのような損傷を防止するものである。このような方法を図面を参照しながら説明すると以下の通りである。
ゲル・パーミエーション・クロマトグラフィー(GPC)により、ポリマーの数平均分子量(Mn)、質量平均分子量(Mw)および分子量分布(Mw/Mn)を、ポリスチレン換算値として測定した。
[重量減少]
窒素雰囲気中もしくは空気中、重量測定法(TG)により、20℃/minで昇温し、400℃で1時間加熱した際の重量変化と600℃で1時間加熱した際の重量変化をそれぞれ測定した。
[多孔質SiO2へのポリマー組成物の埋め込みおよび空隙形成の確認]
分光エリプソメーターにより、波長633nmにおける屈折率の変化によりポリマーの埋め込みと空隙形成の有無を確認した。
(ポリ-4-メチルトリフェニレンアミン(ポリマーP1)の合成)
撹拌器、凝縮器、加熱装置、窒素導入管および温度制御装置を取り付けた反応器に窒素雰囲気下において塩化鉄(III)(無水)(519部)、クロロホルム(4330部)を加え、反応温度を50℃に保持した。その後、クロロホルム(440部)に溶解させた4-メチルトリフェニルアミン(212部)を加えて攪拌した。その後、反応温度を50℃に保持して0.5時間反応させた。
GPC(テトラヒドロフラン)により分子量を測定したところ、数平均分子量Mn=2170Da、質量平均分子量Mw=3991Da、分子量分布(Mw/Mn)=1.84であった。
(ポリ-4-メチルトリフェニレンアミン(ポリマーP2)の合成)
反応時間を0.5時間から1時間に変えた以外は合成例1と同様に行ったところ、ポリマーP2を87部(収率:41%)得た。GPC(クロロホルム)により分子量を測定したところ、数平均分子量Mn=3157Da、質量平均分子量Mw=6030Da、分子量分布(Mw/Mn)=1.91であった。
ポリマーP1(10部)にシクロヘキサノン(275部)を添加し、室温で30分間撹拌して、空隙形成用組成物を調製した。
空隙形成用組成物の各成分を、表1に示す通りに変更したほかは実施例1と同様にして、実施例2~7および比較例1~2の組成物を調製し、評価した。得られた結果は表1に示す通りであった。
101 空隙形成用組成物
101A 犠牲領域
103 溝構造
104 空隙
Claims (9)
- 下記式(1):
Ar1、Ar2、およびAr2’はそれぞれ独立に、1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、イミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L1~L2はそれぞれ独立に、酸素、硫黄、アルキレン、スルホン、アミド、カルボニルもしくは下記一般式(3):
Ar3は1個以上のベンゼン環を含む芳香族基であり、前記芳香族基はアルキル、アリール、アルコキシ、ニトロ、アミド、ジアルキルアミノ、スルホンアミド、イミド、カルボキシ、スルホン酸エステル、アルキルアミノ、およびアリールアミノからなる群から選択される置換基で置換されていてもよく、
L3は窒素、ホウ素、およびリンからなる群から選択される3価原子である。}からなる群から選択される。]
で表される少なくとも1種の繰り返し単位を5つ以上含むポリマーと、
溶剤と、
を含んでなることを特徴とする空隙形成用組成物。 - 前記Ar1、Ar2、およびAr2’がベンゼン環を1個含む芳香族基である、請求項1に記載の空隙形成用組成物。
- 前記ポリマーの質量平均分子量が、1,000~1,000,000である、請求項1または2に記載の空隙形成用組成物。
- 前記ポリマーの含有率が、組成物の総質量を基準として0.2~20質量%である、請求項1~3のいずれか1項に記載の空隙形成用組成物。
- 不活性ガス雰囲気中または空気中、400℃で1時間加熱した際の重量減少が5%以下、かつ600℃で1時間加熱した際の重量減少が80%以上である請求項1~4に記載の空隙形成用組成物。
- 複数の空孔を有する多孔質材料を具備してなる半導体装置を製造する方法であって、
前記多孔質材料に、請求項1~5のいずれか1項に記載の空隙形成用組成物を塗布して前記組成物を前記空孔中に充填し、
前記組成物に含まれる溶媒の一部またはすべてを蒸発させて犠牲材料からなる犠牲領域を形成させ、
前記多孔質材料の表面に凹部を形成させ、
前記凹部に金属材料を充填して金属配線を形成させ、
前記犠牲材料を選択的に除去することによって、前記犠牲領域を中空状態に戻す工程を含むことを特徴とする、半導体装置の製造方法。 - 前記多孔質材料の空孔率が5~70%である、請求項6に記載の方法。
- 前記犠牲材料の除去が、加熱により犠牲材料を分解させて除去する方法、プラズマ処理によって除去する方法、犠牲材料を溶解する溶媒によって溶解させて除去する方法、高エネルギー線を照射して除去する方法のいずれかにより行われる、請求項6または7に記載の方法。
- 請求項6~8のいずれか1項に記載の方法により製造されたことを特徴とする半導体装置。
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JP2016523501A JP6573876B2 (ja) | 2014-05-29 | 2015-05-26 | 空隙形成用組成物、その組成物を用いて形成された空隙を具備した半導体装置、およびその組成物を用いた半導体装置の製造方法 |
US15/313,670 US10435555B2 (en) | 2014-05-29 | 2015-05-26 | Void forming composition, semiconductor device provided with voids formed using composition, and method for manufacturing semiconductor device using composition |
CN201580028112.0A CN106471057A (zh) | 2014-05-29 | 2015-05-26 | 空隙形成用组合物、具备使用该组合物而形成的空隙的半导体装置、以及使用了该组合物的半导体装置的制造方法 |
EP15800354.1A EP3150668A4 (en) | 2014-05-29 | 2015-05-26 | Void forming composition, semiconductor device provided with voids formed using composition, and method for manufacturing semiconductor device using composition |
KR1020167036775A KR20170013939A (ko) | 2014-05-29 | 2015-05-26 | 공극 형성용 조성물, 그 조성물을 사용하여 형성된 공극을 구비한 반도체 장치, 및 그 조성물을 사용한 반도체 장치의 제조방법 |
SG11201609064XA SG11201609064XA (en) | 2014-05-29 | 2015-05-26 | Composition for gap formation, and semiconductor device comprising gaps formed using the composition, and method for producing semiconductor device using the composition |
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US20170210896A1 (en) | 2017-07-27 |
JP6573876B2 (ja) | 2019-09-11 |
SG11201609064XA (en) | 2016-12-29 |
EP3150668A4 (en) | 2018-01-17 |
US10435555B2 (en) | 2019-10-08 |
TW201607986A (zh) | 2016-03-01 |
KR20170013939A (ko) | 2017-02-07 |
IL248722A0 (en) | 2017-01-31 |
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