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US5474622A
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Solar cell having chalcopyrite semiconductor film
Assignee: New Energy and Industrial Technology Development Organization
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Filing: 1994-09-30
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Granted: 1995-12-12
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Expires: 2014-09-30
Abstract
Abstract A solar cell device includes an absorber layer or heterojunction-forming layer which comprises a I-III-VI 2 chalcopyrite semiconductor film containing a Group VIIA element as a dopant. The semiconductor film can be made by depositing a I-III-VI 2 chalcopyrite compound film onto a substrate while evaporating onto the substrate a Group VIIA element to obtain a I-III-VI 2 chalcopyrite compound film containing a Group VIIA element therein as a dopant.
Inventors
- 👤 Takayuki Negami
- 👤 Mikihiko Nishitani
- 👤 Shigemi Kohiki
- 👤 Takahiro Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/12; H10F77/126; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/541; Y02P; Y02P70/00; Y02P70/50; Y10; Y10S; Y10S148/00; Y10S148/153; Y10S438/00; Y10S438/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A solar cell device having as an absorber layer or heterojunction forming layer a chalcopyrite semiconductor film comprising a Group I-III-VI 2 chalcopyrite compound and a Group VIIA element as a dopant therein, wherein the Group VI element of the chalcopyrite compound is partly substituted by the Group VIIA element dopant and the dopant is present in an amount of about 0.1 atomic percent or less.
Claim 2
Dependent Claim
66 words
A solar cell device having as an absorber layer or heterojunction forming layer a chalcopyrite semiconductor film comprising a Group I-III-VI 2 chalcopyrite compound and a Group VIIA element as a dopant therein, wherein the Group VI element of the chalcopyrite compound is partly substituted by the Group VIIA element dopant and the dopant is present in an amount of about 0.1 atomic percent or less.
References Cited (Backward Citations)
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JPH02270381A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-11 | 1999-06-12 | 1999-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-11 | 2003-06-12 | 2003-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-11 | 2007-06-12 | 2007-12-12 | $7700.00 | Window Closed / Lapsed |