Oxide Compounds as a Coating Composition

Abstract

The invention relates to a coating composition consisting of an oxide compound. The invention also relates to a method for producing a coating composition consisting of an oxide compound and to a method for coating substrates composed of metal, semiconductor, alloy, ceramic, quartz, glass or glass-type materials with coating compositions of this type. The invention further relates to the use of a coating composition according to the invention for coating metal, semiconductor, alloy, ceramic, quartz, glass and/or glass-type substrates.

1 . A method of absorbing light energy, comprising:
 thermolytically decomposing at least one compound of the general formula EI(OR) n H 2 , wherein EI denotes Al, Ga, In or Tl, and R represents an aliphatic or alicyclic hydrocarbon radical, and n has the value 1 or 2; at a temperature of more than 450° C. at a pressure of between 10 −4  mbar and 10 −1  mbar on a surface, thereby forming an element/element oxide composite structure comprising an element and the corresponding element oxide; and   absorbing light energy with the element/element oxide composite structure.   
     
     
         2 . The method as claimed in  claim 1 , wherein EI represents Al. 
     
     
         3 . The method as claimed in  claim 2 , wherein aluminum oxide comprises α-Al 2 O 3 . 
     
     
         4 . The method as claimed in  claim 1 , wherein the at least one compound comprises aluminum tert-butoxydihydride. 
     
     
         5 . A method of producing a solar cell or solar collector, comprising:
 forming a light energy absorbing coating composition by thermolytic decomposition of at least one compound of the general formula EI(OR) n H 2 , wherein EI denotes Al, Ga, In or Tl, and R represents an aliphatic or alicyclic hydrocarbon radical, and n has the value 1 or 2; at a temperature of more than 450° C. at a pressure of between 10 −4  mbar and 10 −1  mbar on a surface with the formation of an element/element oxide composite structure comprising an element and the corresponding element oxide; and   coating a substrate with the light energy absorbing coating composition, thereby forming a solar cell or solar collector.   
     
     
         6 . The method as claimed in  claim 5 , wherein EI represents Al. 
     
     
         7 . The method as claimed in  claim 6 , wherein aluminum oxide comprises α-Al 2 O 3 . 
     
     
         8 . The method as claimed in  claim 5 , wherein the at least one compound comprises aluminum tert-butoxydihydride. 
     
     
         9 . The method as claimed in  claim 5 , wherein the coating composition has a thickness of less than 400 nm. 
     
     
         10 . The method as claimed in  claim 5 , wherein the substrate comprises metal, semiconductor, alloy, ceramic, quartz, glass and/or glass-like materials. 
     
     
         11 . The method as claimed in  claim 5 , further comprising said solar cell or solar collector absorbing light energy. 
     
     
         12 . A solar cell or solar collector made by the method as claimed in  claim 5 . 
     
     
         13 . A light energy absorbing coating composition for a solar cell or solar collector comprising a composite structure produced by:
 thermolytic decomposition of at least one compound of the general formula EI(OR) n H 2 , wherein EI denotes Al, Ga, In or Tl, and R represents an aliphatic or alicyclic hydrocarbon radical, and n has the value 1 or 2; at a temperature of more than 450° C. at a pressure of between 10 −4  mbar and 10 −1  mbar on a surface with the formation of an element/element oxide composite structure comprising an element and the corresponding element oxide, thereby forming a light energy absorbing coating composition for a solar cell or solar collector.   
     
     
         14 . The coating as claimed in  claim 13 , wherein EI represents Al. 
     
     
         15 . The coating as claimed in  claim 13 , wherein aluminum oxide comprises α-Al 2 O 3 .