US4705701A
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Conductive tin oxide methods
Assignee: Chronar Corp
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Filing: 1984-11-14
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Granted: 1987-11-10
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Expires: 2004-11-14
Abstract
Abstract The method of producing transparent and conductive tin oxide, which comprised the steps of (a) providing a phosphorous fluoride or a non-matallic halocarbon where the halogen consists of fluorine; (b) providing an organotin compound; and (c) applying the combination of said fluoride or said halocarbon and said organotin compound to a substrate in an oxidizing atmosphere.
Inventors
- 👤 Masud Akhtar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C03C17/2453; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/407; H; H01; H01B; H01B1/00; H01B1/06; H01B1/08
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
56 words
The method of producing transparent and conductive tin oxide, which comprises the steps of (a) providing a phosphorous fluoride or a non-metallic halocarbon where the halogen consists of fluorine; (b) providing an organotin compound; and (c) applying the combination of said fluoride or said halocarbon and said organotin compound to a substrate in an oxidizing atmosphere.
Claim 2
Independent Claim
56 words
The method of producing transparent and conductive tin oxide, which comprises the steps of (a) providing a phosphorous fluoride or a non-metallic halocarbon where the halogen consists of fluorine; (b) providing an organotin compound; and (c) applying the combination of said fluoride or said halocarbon and said organotin compound to a substrate in an oxidizing atmosphere.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said halocarbon or said fluoride is volatile.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein said halocarbon is an alkyl, aryl, vinyl, oxy or amino fluorocarbon.
Claim 5
Dependent Claim
42 words
The method of claim 3 wherein said halocarbon is fully fluorinated and includes tetrafluoromethane and higher order saturated hydrocarbons; hexafluoropropylene and higher order unsaturated hydrocarbons, hexafluorobenzene and higher order aryls, tetrafluoroethylene and other vinyls, hexafluoroacetone and other oxys; bitrifluoromethylamine and other amines.
Claim 6
Dependent Claim
42 words
The method of claim 3 wherein said halocarbon is partially fluorinated, including trifluoromethane and other partially fluorinated alkyls; pentafluorobenzene and other partially fluorinated aryls; trifluoroethylene and other partially fluorinated vinyls; ethyltrifluoroacetate and other partially fluorinated oxys; trifluoroethylamine and other partially fluorinated amines.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein said phosphorous fluoride is fully fluorinated and includes phosphorous pentafluoride and phosphorous trifluoride.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein said phosphorous fluoride is partially fluorinated and includes phosphorous oxytrifluoride; methyl phosphorous tetrafluoride; trifluoromethyl; phosphorous tetrafluoride; and ammonium phosphohexafluoride.
Claim 9
Dependent Claim
10 words
The method of claim 1 further including a phosphorous dopant.
Claim 10
Dependent Claim
14 words
The method fo claim 8 wherein said phosphorous dopant is included in the halocarbon.
Claim 11
Dependent Claim
52 words
The method of claim 1 wherein said organotin compound has the formula R x SnX y , where R is a hydrocarbon group, X is a halogen, hydride or fluorocarbon, x ranges from 0 to 4 and y ranges from 4 to 0, with the sum of x and y being 4.
Claim 12
Dependent Claim
49 words
A transparent and conductive tin oxide which comprises the reaction product of (a) a non-metallic halocarbon consisting of a fluorine halogen or (b) a phosphorous fluoride, combined with an organotin compound, and deposited on a substrate at a temperature in the range from about 400° C. to 600° C.
Claim 13
Dependent Claim
49 words
A transparent and conductive tin oxide which comprises the reaction product of (a) a non-metallic halocarbon consisting of a fluorine halogen or (b) a phosphorous fluoride, combined with an organotin compound, and deposited on a substrate at a temperature in the range from about 400° C. to 600° C.
Claim 14
Dependent Claim
12 words
The composition of claim 11 wherein said organotin compound is fully alkylated.
Claim 15
Dependent Claim
26 words
The composition of claim 11 wherein said organotin compound is partially alkylated and includes tin fluorocarbons, alkyl tin oxide, alkyl tin halide or alkyl tin alkylate.
Claim 16
Independent Claim
58 words
The method of producing a transparent and conductive tin oxide which comprises the steps of (a) oxidizing an organotin compound in the presence of a phosphorous fluoride or a non-metallic halocarbon containing only a fluorine halogen; (b) depositing the reaction product of step (a) at a temperature in the range of from about 450° C. to 620° C.
Claim 17
Independent Claim
58 words
The method of producing a transparent and conductive tin oxide which comprises the steps of (a) oxidizing an organotin compound in the presence of a phosphorous fluoride or a non-metallic halocarbon containing only a fluorine halogen; (b) depositing the reaction product of step (a) at a temperature in the range of from about 450° C. to 620° C.
Claim 18
Dependent Claim
36 words
The method of claim 14 wherein the resistance characteristic of the dopant is controlled by varying the amount of dopant in the form of fluorine or phosphorous, and also in the form of fluorine plus phosphorus.
Claim 19
Dependent Claim
25 words
The method of claim 14 wherein said deposit is formed by chemical vapor deposition with a substrate maintained at a range of about 500° C.
Claim 20
Dependent Claim
45 words
The method of claim 14 wherein the deposit is formed by ultrasonic spraying of the combination of an organotin compound and a fluorocarbon or fluorophosphide subjected to gas pressure; and a flowmeter controls the rate at which the spray solution is applied to a substrate.
Claim 21
Dependent Claim
17 words
The method of claim 17 wherein said substrate is maintained at a temperature of about 600° C.
Claim 22
Dependent Claim
16 words
The method of claim 17 wherein an aersol is used as a carrier for the reactants.
References Cited (Backward Citations)
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