US4613553A
Expired / Lapsed
US
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Processing of metallic charge-transfer salts
Assignee: BROWN UNIVERSITY RESEARCH FOUNDATION PROVIDENCE RI A CORP OF RI
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Filing: 1985-05-31
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Granted: 1986-09-23
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Expires: 2005-05-31
Abstract
Abstract Metallic salts of organic charge-transfer agents, such as TCNQ, TNAP, TCNE and DDQ and their derivatives, can be processed by an electron beam for a variety of useful electronic and optical applications. The metallic charge transfer salts can be used to deposit high resolution conductive lines directly without developing solutions or subsequent metallization steps. The compounds can also be employed in the conventional manner as resists for doping (i.e., ion diffusion or implantation) and to diffuse metals into substrates. In particular, electronic devices, optical devices and image-storage devices are disclosed which can be formed by simple electron beam processed of metal charge-transfer salt films deposited on substrates.
Inventors
- 👤 William M. Risen, Jr.
- 👤 Efstratios I. Kamitsos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/735; G03C5/00; G03C5/56; H; H10; H10F; H10F77/00; H10F77/20; H10K; H10K85/00; H10K85/60; H10K85/611; H10P; H10P14/00; H10P14/60; H10P14/68; H10P14/683; H10P30/00; H10P30/20; H10P32/00; H10P32/10; H10P32/14; H10P32/1408; H10P32/17; H10P32/171; Y; Y10; Y10S; Y10S430/00; Y10S430/143; Y10S430/165
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
70 words
A method of processing a metallic charge transfer salt, the method comprising: (a) applying a film of the metallic charge transfer salt onto a substrate; and (b) exposing the film to an electron beam in a predetermined pattern, the beam having sufficient energy and resolution to convert the salt in exposed regions into the free valent species of its constituents and cause the sublimation of the organic charge transfer constituent.
Claim 2
Independent Claim
70 words
A method of processing a metallic charge transfer salt, the method comprising: (a) applying a film of the metallic charge transfer salt onto a substrate; and (b) exposing the film to an electron beam in a predetermined pattern, the beam having sufficient energy and resolution to convert the salt in exposed regions into the free valent species of its constituents and cause the sublimation of the organic charge transfer constituent.
Claim 3
Dependent Claim
49 words
The method of claim 1 wherein the salt comprises a metal constituent chosen from the group of copper, silver, lithium, potassium, nickel, cobalt, zinc, cadmium, platinum, palladium, iridium, osmium and rhodium and an organic electron acceptor constituent chosen from the group of tetracyanoquinodimethanes, tetracyanonapthoquinodimethanes, tetracyanoethylenes, dichlorodicyanobenizoquinones and derivatives thereof.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein the salt is CuTCNQ.
Claim 5
Dependent Claim
10 words
The method of claim 2 wherein the salt is AgTCNQ.
Claim 6
Dependent Claim
37 words
The method of claim 1 wherein the method further includes removing the metal from the exposed regions of the substrate by oxidizing the metal and treating the substrate with a solvent that selectively dissolves the oxidized metal.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the method further includes diffusing the metal in the exposed regions into the substrate.
Claim 8
Independent Claim
127 words
A method of forming an electronic device, the method comprising: (a) applying a film of a metallic charge transfer salt having a organic charge-transfer constituent onto a substrate; (b) exposing a first region of the film to an electron beam to convert the first region to a first metal electrode by dissociating the salt and causing the sublimation of the organic charge transfer constituent; and (c) exposing a second region of the film to an electron beam to convert the second region to a second metal electrode by dissociating the salt and causing the sublimation of the organic charge-transfer constituent, the first and second regions being chosen such that the first and second electrodes define a sandwich structure having a region of the unexposed film disposed therebetween.
Claim 9
Independent Claim
127 words
A method of forming an electronic device, the method comprising: (a) applying a film of a metallic charge transfer salt having a organic charge-transfer constituent onto a substrate; (b) exposing a first region of the film to an electron beam to convert the first region to a first metal electrode by dissociating the salt and causing the sublimation of the organic charge transfer constituent; and (c) exposing a second region of the film to an electron beam to convert the second region to a second metal electrode by dissociating the salt and causing the sublimation of the organic charge-transfer constituent, the first and second regions being chosen such that the first and second electrodes define a sandwich structure having a region of the unexposed film disposed therebetween.
Claim 10
Dependent Claim
49 words
The method of claim 7 wherein the salt comprises a metal constituent chosen from the group of copper, silver, lithium, potassium, nickel, cobalt, zinc, cadmium, platinum, palladium, iridium, osmium and rhodium and an organic electron acceptor constituent chosen from the group of tetracyanoquinodimethanes, tetracyanonapthoquinodimethanes, tetracyanoethylenes, dichlorodicyanobenzoquinones and derivatives thereof.
Claim 11
Dependent Claim
10 words
The method of claim 8 wherein the salt is CuTCNQ.
Claim 12
Dependent Claim
10 words
The method of claim 8 wherein the salt is AgTCNQ.
Claim 13
Independent Claim
75 words
A method of forming a holographic image of an object, the method comprising: (a) applying a film of a metallic charge transfer salt onto a substrate; (b) exposing regions of the film to an electron beam in a pattern determined by the image, the beam having sufficient energy and resolution to convert the salt in exposed regions into the free valent species of its constituents and cause the sublimation of the organic charge transfer constituent.
Claim 14
Independent Claim
75 words
A method of forming a holographic image of an object, the method comprising: (a) applying a film of a metallic charge transfer salt onto a substrate; (b) exposing regions of the film to an electron beam in a pattern determined by the image, the beam having sufficient energy and resolution to convert the salt in exposed regions into the free valent species of its constituents and cause the sublimation of the organic charge transfer constituent.
Claim 15
Dependent Claim
47 words
The method of claim 11 wherein the salt comprises a metal constituent chosen from the group of copper, silver, nickel, cobalt, zinc, cadmium, platinum, palladium, iridium, osmium, and rhodium and an organic electron acceptor constituent chosen from the group of tetracyanoquinodimethanes, tetracyanonapthoquinodimethanes, tetracyanoethylenes, dichlorodicyanobenzoquinones and derivatives thereof.
Claim 16
Dependent Claim
10 words
The method of claim 12 wherein the salt is CuTCNQ.
Claim 17
Dependent Claim
10 words
The method of claim 12 wherein the salt is AgTCNQ.
Claim 18
Dependent Claim
12 words
The method of claim 11 wherein the substrate is a reflective substrate.
Claim 19
Dependent Claim
13 words
The method of claim 15 wherein the substrate includes a copper mirror surface.
Claim 20
Dependent Claim
13 words
The method of claim 15 wherein the substrate includes a silver mirror surface.
Claim 21
Dependent Claim
12 words
The method of claim 15 wherein the substrate is a transparent substrate.
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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |