US4765845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant thin film photoelectric converter
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1986-12-17
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Granted: 1988-08-23
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Expires: 2006-12-17
Abstract
Abstract A heat-resistant thin film photoelectric converter, comprising a semiconductor layer, a front transparent electrode, a rear metal electrode, and a diffusion-blocking layer, said diffusion-blocking layer being provided between the semiconductor layer and the rear metal electrode and being a layer of metal silicide having a thickness of 5 ANGSTROM to 200 ANGSTROM . The converter of the present invention can avoid the reduction in the efficiency due to the diffusion of metal or metallic compound from the electrode into the semiconductor.
Inventors
- 👤 Jun Takada
- 👤 Minori Yamaguchi
- 👤 Yoshihisa Tawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:32
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10F77/10; H10F77/14; H10F10/00; H10F10/10; H10F10/17; H10F71/00; H10F71/128; H10F77/16; H10F77/162; H10F77/164; H10F77/1642; H10F77/1645; H10F77/166; H10F77/1662; H10F77/244; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/548
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
A heat-resistant thin film photoelectric converter, comprising a semiconductor layer, a front transparent electrode, a rear metal electrode, and a diffusion-blocking layer, said diffusion-blocking layer being provided between the semiconductor layer and the rear metal electrode and being a layer of metal silicide having a thickness in the range of 5 Å to 200 Å.
Claim 2
Dependent Claim
55 words
A heat-resistant thin film photoelectric converter, comprising a semiconductor layer, a front transparent electrode, a rear metal electrode, and a diffusion-blocking layer, said diffusion-blocking layer being provided between the semiconductor layer and the rear metal electrode and being a layer of metal silicide having a thickness in the range of 5 Å to 200 Å.
Claim 3
Dependent Claim
21 words
The converter of claim 1, wherein the thickness of the diffusion-blocking layer of metal silicide is 5 Å to 150 Å.
Claim 4
Dependent Claim
21 words
The converter of claim 1, wherein the thickness of the diffusion-blocking layer of metal silicide is 7 Å to 100 Å.
Claim 5
Dependent Claim
18 words
The converter of claim 1, wherein the silicide contains 1 atomic % to 90 atomic % of metal.
Claim 6
Dependent Claim
33 words
The converter of claim 1, wherein the absorption coefficient of said metal silicide layer in the wavelength range of 400 nm to 700 nm is 10 6 to 10 4 cm -1 .
Claim 7
Dependent Claim
23 words
The converter of claim 1, wherein the metal of the metal silicide is a metal of the Group VIB of the Periodic Table.
Claim 8
Dependent Claim
12 words
The converter of claim 1, wherein the metal silicide is chromium silicide.
Claim 9
Dependent Claim
23 words
The converter of claim 1, wherein the semiconductor is at least one member selected from the group consisting of amorphous and microcrystalline semiconductor.
Claim 10
Dependent Claim
32 words
The converter of claim 8, wherein the semiconductor is an alloy of silicon and at least one member selected from the group consisting of H, F, N, C, O, Ge, and Sn.
Claim 11
Dependent Claim
35 words
The converter of claim 1, wherein the metal of said rear metal electrode has a conductivity of 0.1×10 5 to 6.2×10 5 Ω -1 cm -1 and reflectivity of 20% to 99% at 700 nm.
Claim 12
Dependent Claim
35 words
The converter of claim 10, wherein the metal of said rear metal electrode has a conductivity of 3.0×10 5 to 6.2×10 5 Ω -1 cm -1 and reflectivity of 50 to 99% at 700 nm.
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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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |