▎ 摘　　要

NOVELTY - The method involves preparing titanium dioxide dense layer on base material. The titanium dioxide slurry that contains graphene oxide and ethanol is deposited on the dense layer of titanium dioxide, and is cured, shaped, and heated to obtain a graphene oxide-doped titanium dioxide light positive electrode. The silver-indium-selenide or zinc selenide core-shell quantum dots are deposited into the mesoporous layer of the graphene oxide-doped titanium dioxide light positive electrode using electrophoretic deposition. The light positive electrode based on silver-indium-selenide or zinc selenide core-shell quantum dots is prepared. The silver nitrate, indium acetate, mixed solvent of 1-octadecene and dodecanethiol and oleic acid are mixed to obtain a mixed solution. USE - Method for preparing light positive electrode based on silver-indium-selenium or zinc selenide core-shell structure quantum dot used for preparing photoelectrochemical cell (all claimed). ADVANTAGE - The method solves problems of high toxicity, narrow light absorption range, low activity and low stability of existing quantum dot photoelectrochemical cells. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a photoelectrochemical cell. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view of the curve of the photocurrent test of a photoelectrochemical cell constructed with the light positive electrode. (Drawing includes non-English language text)