US4234625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing material sensitive to electromagnetic and corpuscular radiation
Assignee: Individual
•
Filing: 1978-01-19
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Granted: 1980-11-18
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Expires: 1998-01-19
Abstract
Abstract A process of producing a material sensitive to an electromagnetic and corpuscular radiation involves successively depositing, onto a transparent substrate, a layer of a semiconductor, a barrier layer inert to the semiconductor layer and a layer of a metal capable of reacting with the semiconductor layer under the effect of the electromagnetic and corpuscular radiation with the formation of the reaction products. After deposition of the metal layer, there is performed annealing at a temperature equal to or exceeding the temperature of diffusion of the material of the barrier layer into the material of the layers adjacent thereto. The annealing is conducted for a period sufficient for a partial or a complete dissolution of the barrier layer.
Inventors
- 👤 Vyacheslav V. Petrov
- 👤 Andrei A. Krjuchin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A process of producing a material sensitive to electromagnetic and corpuscular radiation comprising the following steps: depositing, onto a transparent substrate, a layer of a semiconductive material; depositing, unto said layer of the semiconductive material, a barrier layer inert to the layer of the semiconductive material; depositing, unto said barrier layer, a layer of a metal capable of chemically reacting with said semiconductive layer under the effect of said electromagnetic and corpuscular radiation with formation of reaction products having physical and chemical properties different from those of said metal layer and semiconductive layer; annealing of the resulting laminated structure at a temperature at least equal to the temperature of diffusion of the material of said barrier layer into the material of at least one of said layers adjacent thereto, said annealing step being conducted for a period of time sufficient for at least partial dissolution of said barrier layer and prior to the exposure of the material to radiation.
Claim 2
Dependent Claim
159 words
A process of producing a material sensitive to electromagnetic and corpuscular radiation comprising the following steps: depositing, onto a transparent substrate, a layer of a semiconductive material; depositing, unto said layer of the semiconductive material, a barrier layer inert to the layer of the semiconductive material; depositing, unto said barrier layer, a layer of a metal capable of chemically reacting with said semiconductive layer under the effect of said electromagnetic and corpuscular radiation with formation of reaction products having physical and chemical properties different from those of said metal layer and semiconductive layer; annealing of the resulting laminated structure at a temperature at least equal to the temperature of diffusion of the material of said barrier layer into the material of at least one of said layers adjacent thereto, said annealing step being conducted for a period of time sufficient for at least partial dissolution of said barrier layer and prior to the exposure of the material to radiation.
Claim 3
Dependent Claim
21 words
A process as claimed in claim 1, wherein said annealing step is conducted to a complete dissolution of said barrier layer.
Claim 4
Dependent Claim
47 words
A process as claimed in claim 1, wherein prior to the step of depositing said barrier layer onto said semiconductive layer, there is carried out the further step of applying a protective layer which performs the function of an antidiffusion barrier between said barrier and semiconductive layers.
Claim 5
Dependent Claim
51 words
A process as claimed in claim 1, wherein said semiconductive layer is made of a substance selected from the group consisting of As-S, As-Se, Sb-S, Sb-Se, As-S-Se, Sb-S-Se; and said annealing step is conducted at a temperature equal to 0.7-0.9 of the vitrification temperature of the substance of said semiconductive layer.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |