JP2010031378A - スパッタターゲットの製造方法 - Google Patents
スパッタターゲットの製造方法 Download PDFInfo
- Publication number
- JP2010031378A JP2010031378A JP2009245733A JP2009245733A JP2010031378A JP 2010031378 A JP2010031378 A JP 2010031378A JP 2009245733 A JP2009245733 A JP 2009245733A JP 2009245733 A JP2009245733 A JP 2009245733A JP 2010031378 A JP2010031378 A JP 2010031378A
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- JP
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- Prior art keywords
- wiring
- film
- sputter target
- wiring film
- etching
- 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.)
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Images
Classifications
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- C23C—COATING 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
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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- C23C—COATING 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
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- C23C—COATING 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
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/2855—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by physical means, e.g. sputtering, evaporation
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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Abstract
【解決手段】Y、Sc、La、Ce、Nd、Sm、Gd、Tb、DyおよびErから選ばれる少なくとも1種の第1の元素を0.001〜30原子%の範囲で含み、かつ第2の元素としてCを第1の元素に対して1.8原子ppm〜1630原子ppmの範囲で含み、残部がAlからなるスパッタターゲットを作製するにあたって、第1の元素を配合したAlを溶解した後、急冷凝固法により第1の元素とAlの金属間化合物が均一分散されたインゴットを作製する。このインゴットに熱間加工または冷間加工および機械加工を行ってスパッタターゲットを作製する。
【選択図】図2
Description
まずAlに、このAlに対して0.83原子%(2.7質量%)のYと、このYに対して1630原子ppmのCとを添加し、この混合原料を高周波誘導溶解して目的組成のインゴットを作製した。このインゴットに対して冷間圧延および機械加工を施し、直径127mm×厚さ5mmのAlスパッタターゲットを作製した。
表2に示す各組成のAlスパッタターゲットを、それぞれ実施例1と同様にして作製した後、実施例1と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。その結果を併せて表2に示す。
Yに代えて各種元素を用いたAlターゲット(表3に組成を示す)を、それぞれ実施例1と同様にして作製した後、実施例1と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。また、試料No16〜21のAl配線膜については、アルカリ溶液中におけるITO電極との反応性も測定、評価した。このアルカリ溶液中におけるITO電極との反応性は、参照電極に銀・塩化銀電極を用いると共に、陽極をITO、陰極を各Al合金とし、通常用いられる電極測定法で調べた。その結果を併せて表3に示す。
まず、Alに対して2.84原子%(6質量%)のCoを添加した原料を、高周波誘導溶解(真空溶解)し、この溶湯内にH2ガスをバブリングしてHを投入した。Hのバブリング量は、インゴット中のH量がCo量に対して980原子ppmとなるように設定した。このようにして作製した目的組成のインゴットに対して、熱間圧延および機械加工を施し、直径127mm×厚さ5mmのAlスパッタターゲットを得た。
表5に示す各組成のAlスパッタターゲットを、それぞれ実施例4と同様にして作製した後、実施例4と同一条件でスパッタ成膜した。このようにして作製した各Al膜をアルカリ溶液(NMD-3/現像液)中に入れ、参照電極(Ag/AgCl/Cl-)を用いて電極電位を測定した。その結果を表5および図8に示す。
Alより標準電極電位が高い元素(Ir、Pt、V、Nb)を用いて、表6に組成を示すAlスパッタターゲットをそれぞれ実施例4と同様にして作製した後、実施例4と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。また、これらAl配線膜については、実施例3と同様にして、アルカリ溶液中におけるITO電極との反応性も測定、評価した。その結果を併せて表6に示す。なお、表6中の比較例6は、高電極電位元素の含有量を本発明の範囲外としたものである。
Alより標準電極電位が高い元素(Au、Ag、Pd)を用いて、表7に組成を示すAlスパッタターゲットをそれぞれ実施例4と同様にして作製した後、実施例4と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。また、Al配線膜のエッチング性については、ウェットエッチングおよびドライエッチングそれぞれのエッチングレートを調べた。その結果を表7に示す。なお、表7中の比較例7は、Hを添加しない以外は実施例7と同一条件で作製したAlスパッタターゲットを用いて、それぞれ同様にスパッタ成膜したAl膜である。
表8に組成を示すAlスパッタターゲットを、それぞれ実施例4と同様にして作製した後、実施例4と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。その結果を表8に示す。
まず、Alに対して0.3原子%(2質量%)のTaを添加した原料を、高周波誘導溶解(真空溶解)し、溶解時にO2をバブリングして酸素を投入した。酸素の投入量は、インゴット中のO量がTa量に対して10原子ppmとなるように設定した。このようにして作製した目的組成のインゴットに対して、熱間圧延および機械加工を施し、直径127mm×厚さ5mmのAlスパッタターゲットを得た。
各種元素を用いたAlターゲット(表10に組成を示す)を、それぞれ実施例9と同様にして作製した後、実施例9と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。また、試料No5〜6のAl配線膜については、実施例3と同様にして、アルカリ溶液中におけるITO電極との反応性も測定、評価した。その結果を表10に示す。なお、表10中の比較例10は、添加元素量を本発明の範囲外としたものである。
まず、Alに対して0.28原子%(2質量%)のPtを添加した原料を、高周波誘導溶解(真空溶解)し、溶解時にN2をバブリングして窒素を投入した。窒素の投入量は、インゴット中のN量がPt量に対して19原子ppmとなるように設定した。このようにして作製した目的組成のインゴットに対して、熱間圧延および機械加工を施し、直径127mm×厚さ5mmのAlスパッタターゲットを得た。
各種元素を用いたAlターゲット(表12に組成を示す)を、それぞれ実施例11と同様にして作製した後、実施例11と同一条件でスパッタ成膜して、それぞれAl配線膜を得た。これら各Al配線膜の特性を実施例1と同様にして測定、評価した。なお、表12中の比較例12は、添加元素量を本発明の範囲外としたものである。
Claims (4)
- Y、Sc、La、Ce、Nd、Sm、Gd、Tb、DyおよびErから選ばれる少なくとも1種の第1の元素を0.001〜30原子%の範囲で含み、かつ第2の元素としてCを前記第1の元素に対して1.8原子ppm〜1630原子ppmの範囲で含み、残部がAlからなるスパッタターゲットの製造方法において、
前記第1の元素を配合したAlを溶解した後、急冷凝固法により前記第1の元素とAlの金属間化合物が均一分散されたインゴットを作製する工程と、
前記インゴットに熱間加工または冷間加工および機械加工を行ってスパッタターゲットを作製する工程と
を具備することを特徴とするスパッタターゲットの製造方法。 - 請求項1記載のスパッタターゲットの製造方法において、
前記急冷凝固法がスプレーフォーミング法であることを特徴とするスパッタターゲットの製造方法。 - 請求項2記載のスパッタターゲットの製造方法において、
前記第2の元素であるCの含有量が前記第1の元素に対して700原子ppm以下であることを特徴とするスパッタターゲットの製造方法。 - 請求項3記載のスパッタターゲットの製造方法において、
前記第2の元素であるCの含有量が前記第1の元素に対して300原子ppm以下であることを特徴とするスパッタターゲットの製造方法。
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JP2004076172A Expired - Lifetime JP4130418B2 (ja) | 1995-10-12 | 2004-03-17 | 配線膜とその製造方法、およびそれを用いた電子部品 |
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JP2005276820A Expired - Fee Related JP4589854B2 (ja) | 1995-10-12 | 2005-09-22 | Al合金配線の製造方法 |
JP2005276818A Expired - Lifetime JP4488991B2 (ja) | 1995-10-12 | 2005-09-22 | スパッタターゲットの製造方法 |
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Also Published As
Publication number | Publication date |
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JP4488992B2 (ja) | 2010-06-23 |
EP1553205B1 (en) | 2017-01-25 |
KR19990064231A (ko) | 1999-07-26 |
JP4130418B2 (ja) | 2008-08-06 |
JP2006111970A (ja) | 2006-04-27 |
JP5175824B2 (ja) | 2013-04-03 |
JP4137182B2 (ja) | 2008-08-20 |
JP4488991B2 (ja) | 2010-06-23 |
EP0855451A4 (en) | 1999-10-06 |
EP0855451A1 (en) | 1998-07-29 |
USRE41975E1 (en) | 2010-11-30 |
JP2006100822A (ja) | 2006-04-13 |
KR100312548B1 (ko) | 2001-12-28 |
US6329275B1 (en) | 2001-12-11 |
TW318276B (ja) | 1997-10-21 |
WO1997013885A1 (en) | 1997-04-17 |
JP2004260194A (ja) | 2004-09-16 |
JP2006111969A (ja) | 2006-04-27 |
JP5175780B2 (ja) | 2013-04-03 |
JP2009149997A (ja) | 2009-07-09 |
EP1553205A1 (en) | 2005-07-13 |
JP4589854B2 (ja) | 2010-12-01 |
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