JP2009299178A - バックグラウンドめっきを抑制する方法 - Google Patents
バックグラウンドめっきを抑制する方法 Download PDFInfo
- Publication number
- JP2009299178A JP2009299178A JP2009053123A JP2009053123A JP2009299178A JP 2009299178 A JP2009299178 A JP 2009299178A JP 2009053123 A JP2009053123 A JP 2009053123A JP 2009053123 A JP2009053123 A JP 2009053123A JP 2009299178 A JP2009299178 A JP 2009299178A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- wafer
- metal
- silver
- dielectric layer
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000007747 plating Methods 0.000 title abstract description 139
- 230000002401 inhibitory effect Effects 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 82
- 239000004065 semiconductor Substances 0.000 claims abstract description 36
- 230000007547 defect Effects 0.000 claims abstract description 31
- 239000007800 oxidant agent Substances 0.000 claims abstract description 25
- 238000000151 deposition Methods 0.000 claims abstract description 11
- 229910052709 silver Inorganic materials 0.000 claims description 57
- 239000004332 silver Substances 0.000 claims description 57
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 53
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 20
- 239000003792 electrolyte Substances 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
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- 239000010931 gold Substances 0.000 claims description 5
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical group O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims 1
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- 239000011248 coating agent Substances 0.000 abstract description 4
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- 229910052581 Si3N4 Inorganic materials 0.000 description 15
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 15
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 13
- 238000009713 electroplating Methods 0.000 description 12
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- 239000003795 chemical substances by application Substances 0.000 description 9
- 230000005855 radiation Effects 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
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- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
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- 239000004094 surface-active agent Substances 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 5
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- 239000002585 base Substances 0.000 description 5
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- 125000004430 oxygen atom Chemical group O* 0.000 description 5
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 4
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 description 4
- AUNGANRZJHBGPY-SCRDCRAPSA-N Riboflavin Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-SCRDCRAPSA-N 0.000 description 4
- 239000000872 buffer Substances 0.000 description 4
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- 239000003989 dielectric material Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
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- LXNHXLLTXMVWPM-UHFFFAOYSA-N pyridoxine Chemical compound CC1=NC=C(CO)C(CO)=C1O LXNHXLLTXMVWPM-UHFFFAOYSA-N 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003093 cationic surfactant Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 150000003949 imides Chemical class 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 229940098779 methanesulfonic acid Drugs 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
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- GHOKWGTUZJEAQD-ZETCQYMHSA-N (D)-(+)-Pantothenic acid Chemical compound OCC(C)(C)[C@@H](O)C(=O)NCCC(O)=O GHOKWGTUZJEAQD-ZETCQYMHSA-N 0.000 description 2
- DEPDDPLQZYCHOH-UHFFFAOYSA-N 1h-imidazol-2-amine Chemical compound NC1=NC=CN1 DEPDDPLQZYCHOH-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- AUNGANRZJHBGPY-UHFFFAOYSA-N D-Lyxoflavin Natural products OCC(O)C(O)C(O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-UHFFFAOYSA-N 0.000 description 2
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
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- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 description 2
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- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 description 2
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- IASBMUIXBJNMDW-UHFFFAOYSA-N 4-aminonicotinic acid Chemical compound NC1=CC=NC=C1C(O)=O IASBMUIXBJNMDW-UHFFFAOYSA-N 0.000 description 1
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- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- XHLKOHSAWQPOFO-UHFFFAOYSA-N 5-phenyl-1h-imidazole Chemical compound N1C=NC=C1C1=CC=CC=C1 XHLKOHSAWQPOFO-UHFFFAOYSA-N 0.000 description 1
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- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
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- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/46—Electroplating: Baths therefor from solutions of silver
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- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
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- H01L31/02—Details
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Abstract
【解決手段】導電母線および集電ラインのための導電パターンと、半導体の前面上の導電パターンの間のスペースを覆う誘電層とを有し、当該誘電層が1以上の欠陥を含有する半導体において、少なくとも誘電層を1種以上の酸化剤と接触させ、並びに、導電パターン上に金属層を選択的に堆積させる。
【選択図】なし
Description
次の成分を混合し、溶液を1リットルにするのに充分な脱イオン(DI)水を添加することにより銀電気めっき浴が調製された。
次の成分を混合し、溶液を1リットルにするのに充分なDI水を添加することにより銀電気めっき浴が調製された。
次の成分を混合し、溶液を1リットルにするのに充分なDI水を添加することにより銀電気めっき浴が調製された。
焼成された銀ペーストから形成された集電ラインおよび母線のパターンを有し、集電ラインと母線との間のスペースに窒化ケイ素の誘電層を有する図1に示されるようなウェハが、25体積%のメタンスルホン酸水溶液と接触させられ、次いでDI水ですすがれた。
焼成された銀ペーストをめっきするために実施例2の銀めっき浴が使用されることを除き、実施例4のめっきプロセスが繰り返される。窒化ケイ素誘電層上のバックグラウンドめっきは、図3の左のウェハにより示されるように予想される。
焼成された銀ペーストをめっきするために実施例3の銀めっき浴が使用されることを除き、実施例4のめっきプロセスが繰り返される。窒化ケイ素誘電層上のバックグラウンドめっきは、図3の左のウェハにより示されるように予想される。
焼成された銀ペーストから形成された集電ラインおよび母線のパターンを有し、集電ラインと母線との間のスペースに窒化ケイ素の誘電層を有する図1に示されるような構造を有する2枚のウェハが、25体積%のメタンスルホン酸水溶液と接触させられ、次いでDI水ですすがれた。次いで、ウェハは7リットルタンク内に配置された。小型オゾン発生装置からオゾンがそのタンクに供給された。320ppmの濃度のオゾンがウェハに90分間供給された。
実施例2の銀浴が使用されることを除き、実施例7に記載されるような、焼成されたペーストを銀で金属化する前にウェハをオゾンで処理する方法が繰り返される。窒化ケイ素誘電体上のバックグラウンドめっきの有意な抑制が、実施例7におけるように予想される。
実施例3の銀浴が使用されることを除き、実施例7に記載されるような、焼成されたペーストを銀で金属化する前にウェハをオゾンで処理する方法が繰り返される。窒化ケイ素誘電体上のバックグラウンドめっきの有意な抑制が、実施例7におけるように予想される。
10 半導体ウェハ
11 背面
12 前面
14 母線
15 集電ライン
20 めっきセル
21 めっき浴
22 アノード
24 電源
25 光源
27 光エネルギー
Claims (10)
- a)導電母線および集電ラインのための導電パターンと、半導体の前面上の導電パターンの間のスペースを覆う誘電層とを含む半導体であって、当該誘電層が1以上の欠陥を含有する半導体を提供し;
b)少なくとも誘電層を1種以上の酸化剤と接触させ;並びに
c)導電パターン上に金属層を選択的に堆積させる;
ことを含む方法。 - 酸化剤が酸素反応物質から選択される請求項1に記載の方法。
- 酸化剤が過酸化水素およびヒドロキシルラジカルから選択される請求項1に記載の方法。
- 酸化剤が硝酸、硫酸、水酸化アンモニウムおよび過硫酸塩から選択される請求項1に記載の方法。
- 誘電層が30秒〜400分の間酸化剤と接触させられる請求項1に記載の方法。
- 導電パターン上に金属層を選択的に堆積させる工程の間に半導体に光を適用する工程をさらに含む請求項1に記載の方法。
- 光が連続またはパルスである請求項6に記載の方法。
- 金属層が銀、金、銅、または金属合金である請求項1に記載の方法。
- 金属層が銀であり、シアン化物を含まない電解質から選択的に堆積される請求項1に記載の方法。
- 電解質が7から14のpHを有する請求項9に記載の方法。
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US7010108P | 2008-03-19 | 2008-03-19 | |
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US (1) | US7939438B2 (ja) |
EP (1) | EP2103716B1 (ja) |
JP (1) | JP5216633B2 (ja) |
KR (1) | KR101582505B1 (ja) |
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Cited By (1)
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WO2014020981A1 (ja) * | 2012-07-31 | 2014-02-06 | 株式会社大和化成研究所 | 電気銀めっき液 |
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DE102009051688A1 (de) * | 2009-10-23 | 2011-04-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur lichtinduzierten galvanischen Pulsabscheidung zur Ausbildung einer Saatschicht für einen Metallkontakt einer Solarzelle und zur nachfolgenden Verstärkung dieser Saatschicht bzw. dieses Metallkontakts sowie Anordnung zur Durchführung des Verfahrens |
JP2011122192A (ja) * | 2009-12-09 | 2011-06-23 | Ne Chemcat Corp | 電解硬質金めっき液及びこれを用いるめっき方法 |
CN102021572B (zh) * | 2010-12-20 | 2012-07-25 | 复旦大学 | 一种基于铁电材料纳米压印的颗粒自组装方法 |
KR101113068B1 (ko) | 2010-12-30 | 2012-02-15 | (주)지오데코 | 광 유도 플레이팅을 이용한 태양전지 전극 형성방법 |
DE102011010306A1 (de) * | 2011-02-03 | 2012-08-09 | Rena Gmbh | Verfahren zur Herstellung einer kristallinen Siliziumsolarzelle unter Vermeidung unerwünschter Metallabscheidungen |
TWI414706B (zh) * | 2011-05-26 | 2013-11-11 | Univ Cheng Shiu | 電積成形製作管件的方法 |
DE102014211227A1 (de) | 2014-06-12 | 2015-12-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur selektiven Entfernung von Background-Plating auf Solarzellen |
US10789185B2 (en) | 2016-09-21 | 2020-09-29 | Rambus Inc. | Memory modules and systems with variable-width data ranks and configurable data-rank timing |
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JP5216633B2 (ja) | 2013-06-19 |
US7939438B2 (en) | 2011-05-10 |
KR20090100305A (ko) | 2009-09-23 |
KR101582505B1 (ko) | 2016-01-05 |
EP2103716A1 (en) | 2009-09-23 |
CN101552306B (zh) | 2011-01-19 |
TWI391535B (zh) | 2013-04-01 |
US20090258491A1 (en) | 2009-10-15 |
EP2103716B1 (en) | 2013-05-01 |
CN101552306A (zh) | 2009-10-07 |
TW200951249A (en) | 2009-12-16 |
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