US4521800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer photoelectrodes utilizing exotic materials
Assignee: BP Corp North America Inc
•
Filing: 1982-10-15
•
Granted: 1985-06-04
•
Expires: 2002-10-15
Abstract
Abstract A corrosion-resistant, multilayer photoelectrode for use in a photoelectrochemical cell and a process for producing said photoelectrode by preparing an effective layer of an insulator material on a base semiconductor and depositing a layer of conducting material on said layer of insulating material.
Inventors
- 👤 Arthur T. Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:50
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/20; C; C25; C25B; C25B1/00; C25B1/50; C25B1/55; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/542; Y02P; Y02P20/00; Y02P20/10; Y02P20/133
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A multilayer structure which comprises: (a) an n-type semiconductor; (b) a first layer which is in direct contact with said n-type semiconductor, wherein said first layer comprises a compound which contains at least one first element in anionic form which is selected from the group consisting of phosphorus, arsenic and antimony, and at least one second element in cationic form which is selected from the group consisting of vanadium, titanium, zirconium, hafnium, niobium and tantalum; and (c) a second layer comprising a conducting material which is in direct contact with said first layer.
Claim 2
Dependent Claim
93 words
A multilayer structure which comprises: (a) an n-type semiconductor; (b) a first layer which is in direct contact with said n-type semiconductor, wherein said first layer comprises a compound which contains at least one first element in anionic form which is selected from the group consisting of phosphorus, arsenic and antimony, and at least one second element in cationic form which is selected from the group consisting of vanadium, titanium, zirconium, hafnium, niobium and tantalum; and (c) a second layer comprising a conducting material which is in direct contact with said first layer.
Claim 3
Dependent Claim
15 words
The multilayer structure as set forth in claim 1 wherein said semiconductor is n-type silicon.
Claim 4
Dependent Claim
37 words
The multilayer structure as set forth in claim 2 wherein said conducting material comprises a material which is selected from the group consisting of Pt, Pd, Au, W, Ta, MoSi 2 , doped oxides and conducting organics.
Claim 5
Dependent Claim
16 words
The multilayer structure as set forth in claim 2 wherein said first layer comprises vanadium phosphide.
Claim 6
Dependent Claim
27 words
The multilayer structure as set forth in claim 4 wherein said conducting material comprises at least one material selected from the group consisting of platinum and titanium.
Claim 7
Dependent Claim
38 words
A multilayer structure which comprises: (a) an n-type silicon semiconductor; (b) a layer of a lanthanide boride which is in direct contact with said n-type semiconductor; and (c) a layer of conducting material on said lanthanide boride layer.
Claim 8
Dependent Claim
38 words
A multilayer structure which comprises: (a) an n-type silicon semiconductor; (b) a layer of a lanthanide boride which is in direct contact with said n-type semiconductor; and (c) a layer of conducting material on said lanthanide boride layer.
Claim 9
Dependent Claim
16 words
The multilayer structure as set forth in claim 6 wherein said lanthanide boride is lanthanum hexaboride.
Claim 10
Dependent Claim
37 words
The multilayer structure as set forth in claim 6 wherein said conducting material comprises a material which is selected from the group consisting of Pt, Pd, Au, W, Ta, MoSi 2 , doped oxides and conducting organics.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |