Patent ID: 8642377

Claim:
A method of producing a conductive thin film for being used as an electrode, comprising the steps of: providing a substrate; forming a first metal oxide layer on the substrate by a solution process; forming a metal layer on and in contact with the first metal oxide layer by a non-solution process or the solution process; and forming a second metal oxide layer on and in contact with the metal layer by the solution process; wherein both the first metal oxide layer and the second metal oxide layer are semiconductor layers comprising zinc oxide, titanium oxide, vanadium oxide, nickel oxide, molybdenum oxide, copper oxide, silver oxide, or tungsten oxide with a formula M x O y , in which M denotes zinc, titanium, vanadium, nickel, molybdenum, copper, silver, or tungsten, O denotes oxide, and x and y denote positive integers; and wherein the solution process comprises a micro/nano particle stacking method comprising the steps of: coating a solution comprising a solvent and a plurality of micro/nano metal particles or a plurality of micro/nano metal oxide particles on a surface prepared to form the metal layer, the first metal oxide layer, or the second metal oxide layer; and stacking the plurality of micro/nano metal particles or the plurality of micro/nano metal oxide particles to form the metal layer, the first metal oxide layer, or the second metal oxide layer in a physical manner after the solvent is removed; wherein all the steps of the micro/nano particle stacking method are performed at a temperature less than 100° C. during and after the formation of the metal layer, the first metal oxide layer, or the second metal oxide layer.