EP1218569B1 - Galvanisierungslösung für die galvanische abscheidung von kupfer - Google Patents
Galvanisierungslösung für die galvanische abscheidung von kupfer Download PDFInfo
- Publication number
- EP1218569B1 EP1218569B1 EP00962386A EP00962386A EP1218569B1 EP 1218569 B1 EP1218569 B1 EP 1218569B1 EP 00962386 A EP00962386 A EP 00962386A EP 00962386 A EP00962386 A EP 00962386A EP 1218569 B1 EP1218569 B1 EP 1218569B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- copper
- deposition
- film
- galvanic
- current
- 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 - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- C25D3/38—Electroplating: Baths therefor from solutions of copper
Description
Hergestellt von der Firma Meltex Learonal Japan
Chemische Zusammensetzung der Cu-Galvanisierungslösung | |
Zusammensetzung | Konzentration |
CuSO4·5H2O | 60-150 g/l |
H2SO4 | 80-150 g/l |
Cl-Ionen | 50-150 ppm |
PEG | ∼100 ppm |
Zusatzreagentien | Gering |
- Figur 1.
- Typisches Abscheidungsprofil bei der Galvanisierung.
- Figur 2.
- Der schematische Querschnitt zeigt die Mikrorauheit an der Kathode. Die Glättung akkumuliert sich am Peak (P), da die Diffusion in geringem Abstand von der Diffusionsgrenzschicht verhältnsmäßig schnell verläuft. Die Diffusion im Tal (V) ist zu langsam, um mit dem Glättmittelverbrauch Schritt zu halten. Infolgedessen wird die Metallabscheidung am Peak, aber nicht in den Tälern, inhibiert, und das Füllen in den Tälern ergibt eine glattere Oberfläche.
- Figur 3. (a)
- In einem 0,4-Mikron-Graben mit einem Aspektverhältnis von 2,1:1 galvanisch abgeschiedenes Kupfer
- Figur 3.(b)
- In einem 0,35-Mikron-Graben mit einem Aspektverhältnis von 2,4:1 galvanisch abgeschiedenes Kupfer
- Figur 4.
- Mit dem optimierten Abscheidungsverfahren kann man ein ein hohes Aspektverhältnis (∼5) aufweisendes Strukturloch einer 0,28-µm-Durchkontaktierung ohne offensichtliche Fugenbildung füllen.
- Figur 5.
- Schematische Darstellung des Systems zur galvanischen Abscheidung von Cu.
- Figur 6.
- Abhängigkeit der Dicke von der Änderung der
H2SO4-Konzentration.
(CuSO4·5H2O: 90 g/l, Stromdichte: 2,4 A/dm2, Zeit: 2 Min.) - Figur 7.
- Änderung des spezifischen Widerstands von Cu-Filmen
als Funktion der H2SO4-Konzentration.
(CuSO4·5H2O: 90 g/l, Stromdichte: 2,4 A/dm2, Zeit: 2 Min.) - Figur 8.
- SEM-Aufnahmen der Kupferfilmmorphologie in Gegenwart und Abwesenheit von H2SO4. (a) nur CuSO4·5H2O (90 g/l) (b) CuSO4·5H2O (90 g/l) und H2SO4 (20 ml/l).
- Figur 9.
- Abhängigkeit der Filmabscheidungsgeschwindigkeit
von der Änderung der Stromdichte.
(CuSO4·5H2O: 90 g/l, H2SO4: 197 g/l, Zeit: 2 Min.) - Figur 10.
- Änderung des spezifischen Filmwiderstands als
Funktion der Änderung des angelegten Stroms.
(CuSO4·5H2O: 90 g/l, H2SO4: 197 g/l, Zeit: 2 Min.) - Figur 11.
- Cu-Filmmorphologie bei unterschiedlichem angelegtem Strom.
- Figur 12.
- XRD-Messung bei verschiedenem angelegtem
Strom.
(CuSO4·5H2O: 90 g/l, H2SO4: 197 g/l, Zeit: 2 Min.) - Figur 13.(a)
- Die SIMS-Ergebnisse zeigen die Sauerstoffkonzentration in galvanisch abgeschiedenem Cu-Film bei niedriger angelegter Stromdichte von 1,2 A/dm2.
- Figur 13.(b)
- Die SIMS-Ergebnisse zeigen die Sauerstoffkonzentration in galvanisch abgeschiedenem Cu-Film bei großer angelegter Stromdichte von 3,2 A/dm2.
- Figur 22.(c)
- SIMS-Analyse an Cu-Film mit Zusatz von 0,018 g/l Thioharnstoff.
- Figur 23.
- Der spezifische Widerstand von Cu-Filmen
ändert sich mit verschiedenem PEG-Molekulargewicht
bei verschiedener Abscheidungszeit.
(CuSO4·5H2O: 90 g/l, H2SO4: 197 g/l, HCl: 70 ppm, Stromdichte: 1,2 A/dm2) - Figur 24.
- Analyse der Filmmorphologie bei verschiedener Thioharnstoff-Zusatzmenge (a) Zusatz von PEG1000 (b) Zusatz von PEG10.000
- Figur 25.
- XRD-Messung bei unterschiedlichem PEG-Molekulargewicht.
- Figur 26.(a)
- SIMS-Analyse an Cu-Film bei Zusatz von Thioharnstoff und PEG200.
- Figur 26.(b)
- SIMS-Analyse an Cu-Film bei Zusatz von Thioharnstoff und PEG4000.
- Figur 27.
- SEM-Aufnahme des ohne Additivreagentienzusatz galvanisch abgeschiedenen Cu-Films. Die Grabenabmessung beträgt 0,25 µm.
- Figur 28.
- SEM-Aufnahme des unter Zusatz von 0,06 g/l (NH2OH)2·H2SO4 galvanisch abgeschiedenen Cu-Films. Die Grabenabmessung beträgt 0,25 µm.
- Figur 29.(a) und (b)
- SEM-Aufnahme von galvanischer Cu-Abscheidung auf 0,3-0,8-µm-Durchkontaktierung/Graben mit geringer Vergrößerung.
- Figur 30.
- Änderung des spezifischen Widerstands bei verschiedener Additivreagens-Menge bei verschiedener Abscheidungszeit.
- Figur 31.
- AES-Analyse des Cu-Films bei Zusatz von 0,06 g/l (NH2OH)2·H2SO4.
- Figur 32.
- SIMS-Analyse des Cu-Films bei Zusatz von 0,06 g/l (NH2OH)2·H2SO4.
Claims (3)
- Galvanisierungslösung für Kupfer, enthaltend CuSO4·5H2O, H2SO4, HCl, Polyethylenglykol (Molekulargewicht >200), Hydroxylaminsulfat, Hydroxylaminchlorid und gegebenenfalls weitere Additive.
- Lösung nach Anspruch 1, enthaltend Cl-Ionen in einem Bereich von 50 bis 150 ppm und Hydroxylaminsulfat in einem Bereich von 0,01 bis 5 g/l.
- Lösung nach Anspruch 1, enthaltend Cl-Ionen in einem Bereich von 55 bis 125 ppm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19941605 | 1999-09-01 | ||
DE19941605A DE19941605A1 (de) | 1999-09-01 | 1999-09-01 | Galvanisierungslösung für die galvanische Abscheidung von Kupfer |
PCT/EP2000/008312 WO2001016403A1 (de) | 1999-09-01 | 2000-08-25 | Galvanisierungslösung für die galvanische abscheidung von kupfer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1218569A1 EP1218569A1 (de) | 2002-07-03 |
EP1218569B1 true EP1218569B1 (de) | 2003-02-26 |
Family
ID=7920396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00962386A Expired - Lifetime EP1218569B1 (de) | 1999-09-01 | 2000-08-25 | Galvanisierungslösung für die galvanische abscheidung von kupfer |
Country Status (10)
Country | Link |
---|---|
US (1) | US6858123B1 (de) |
EP (1) | EP1218569B1 (de) |
JP (1) | JP4416979B2 (de) |
KR (1) | KR100737511B1 (de) |
AT (1) | ATE233330T1 (de) |
AU (1) | AU7413600A (de) |
DE (2) | DE19941605A1 (de) |
MY (1) | MY124024A (de) |
TW (1) | TWI230208B (de) |
WO (1) | WO2001016403A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1308541A1 (de) * | 2001-10-04 | 2003-05-07 | Shipley Company LLC | Beschichtungsbad und Methode zur Abscheidung einer Metallschicht auf einem Substrat |
US20050095854A1 (en) * | 2003-10-31 | 2005-05-05 | Uzoh Cyprian E. | Methods for depositing high yield and low defect density conductive films in damascene structures |
JP4540981B2 (ja) * | 2003-12-25 | 2010-09-08 | 株式会社荏原製作所 | めっき方法 |
DE102006060205B3 (de) * | 2006-12-18 | 2008-04-17 | Forschungszentrum Jülich GmbH | Verfahren zur Herstellung von Durchkontaktierungen und Leiterbahnen |
CN101636527B (zh) * | 2007-03-15 | 2011-11-09 | 日矿金属株式会社 | 铜电解液和使用该铜电解液得到的两层挠性基板 |
JP4682285B2 (ja) * | 2007-08-30 | 2011-05-11 | 日立電線株式会社 | 配線及び層間接続ビアの形成方法 |
US8110500B2 (en) | 2008-10-21 | 2012-02-07 | International Business Machines Corporation | Mitigation of plating stub resonance by controlling surface roughness |
KR101585200B1 (ko) * | 2014-09-04 | 2016-01-15 | 한국생산기술연구원 | 동도금액 조성물 및 이를 이용한 동도금 방법 |
CN115787007A (zh) * | 2022-11-03 | 2023-03-14 | 厦门大学 | 一种酸性硫酸盐电子电镀铜添加剂组合物及其应用 |
CN116682785B (zh) * | 2023-08-03 | 2023-12-29 | 上海电子信息职业技术学院 | 一种采用葡萄糖实现tsv完全填充方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757882A (en) | 1980-09-25 | 1982-04-07 | Nippon Mining Co Ltd | Black or blue rhodium coated articles, production thereof and plating bath used therefor |
DE3619385A1 (de) | 1986-06-09 | 1987-12-10 | Elektro Brite Gmbh | Saures sulfathaltiges bad fuer die galvanische abscheidung von zn-fe-legierungen |
US5051154A (en) | 1988-08-23 | 1991-09-24 | Shipley Company Inc. | Additive for acid-copper electroplating baths to increase throwing power |
US5174886A (en) * | 1991-02-22 | 1992-12-29 | Mcgean-Rohco, Inc. | High-throw acid copper plating using inert electrolyte |
GB2266894A (en) | 1992-05-15 | 1993-11-17 | Zinex Corp | Modified tin brightener for tin-zinc alloy electroplating bath |
-
1999
- 1999-09-01 DE DE19941605A patent/DE19941605A1/de not_active Withdrawn
-
2000
- 2000-08-25 AT AT00962386T patent/ATE233330T1/de not_active IP Right Cessation
- 2000-08-25 DE DE50001349T patent/DE50001349D1/de not_active Expired - Lifetime
- 2000-08-25 AU AU74136/00A patent/AU7413600A/en not_active Abandoned
- 2000-08-25 WO PCT/EP2000/008312 patent/WO2001016403A1/de active IP Right Grant
- 2000-08-25 EP EP00962386A patent/EP1218569B1/de not_active Expired - Lifetime
- 2000-08-25 JP JP2001519943A patent/JP4416979B2/ja not_active Expired - Fee Related
- 2000-08-25 US US10/070,000 patent/US6858123B1/en not_active Expired - Lifetime
- 2000-08-25 KR KR1020027002623A patent/KR100737511B1/ko not_active IP Right Cessation
- 2000-08-28 TW TW089117408A patent/TWI230208B/zh active
- 2000-08-30 MY MYPI20004015 patent/MY124024A/en unknown
Also Published As
Publication number | Publication date |
---|---|
JP2003508630A (ja) | 2003-03-04 |
EP1218569A1 (de) | 2002-07-03 |
DE50001349D1 (de) | 2003-04-03 |
MY124024A (en) | 2006-06-30 |
US6858123B1 (en) | 2005-02-22 |
TWI230208B (en) | 2005-04-01 |
WO2001016403A1 (de) | 2001-03-08 |
JP4416979B2 (ja) | 2010-02-17 |
ATE233330T1 (de) | 2003-03-15 |
DE19941605A1 (de) | 2001-03-15 |
AU7413600A (en) | 2001-03-26 |
KR20020029933A (ko) | 2002-04-20 |
KR100737511B1 (ko) | 2007-07-09 |
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