Patent ID: 8450605

Claim:
A method for making a photoelectric conversion device, the method comprising: providing a positive electrode layer and a conjugated polymer solution, wherein the conjugated polymer solution comprises a first solvent and a conjugated polymer dissolved in the first solvent, and the conjugated polymer comprises cyclized polyacrylonitrile; uniformly coating the conjugated polymer solution on a surface of the positive electrode layer; drying the conjugated polymer solution coated on the surface of the positive electrode layer, thereby forming an electron donor layer; forming an electron acceptor layer on a surface of the electron donor layer; and disposing a negative electrode layer on a surface of the electron acceptor layer; wherein the conjugated polymer is made by the following steps: providing polyacrylonitrile, the first solvent, and a catalyst; dissolving the polyacrylonitrile in the first solvent to form a polyacrylonitrile solution at room temperature; uniformly dispersing the catalyst into the polyacrylonitrile solution, wherein the catalyst is metal powder or metal oxide powder; and heating the polyacrylonitrile solution with the dispersed catalyst to induce a cyclizing reaction of the polyacrylonitrile, thereby forming the conjugated polymer solution having the conjugated polymer dissolved therein, the catalyst is capable of promoting the cyclizing reaction.