▎ 摘　　要

NOVELTY - Preparing environment-friendly zinc-silver-indium-selenium quantum dot sensitized doped light anode involves preparing titanium dioxide barrier layer cleaning substrate and drying, the titanium-nano oxide solution spin coating on the substrate, then calcining to obtain titanium dioxide barrier layer, preparing graphene oxide doped titanium dioxide light anode oxidized graphite alkene of ethanol dispersion, titanium dioxide slurry and dispersant mixing ultrasonic, and drying to 1/5 of the volume of the original mixture under the vacuum condition to obtain the slurry, coating the slurry on the titanium dioxide barrier layer, forming the titanium dioxide light anode doped with graphene oxide after moulding, shaping, heating and heat preservation. USE - Method for preparing environment-friendly zinc-silver-indium-selenium quantum dot sensitized doped light anode used for photoelectrochemical cell. ADVANTAGE - The method provides an environment-friendly zinc-silver-indium-selenium quantum dot for sensitizing light anode, which improves the absorption range of the light and doped with graphene oxide in the titanium dioxide electrode, which can improve the electron transfer rate in the electrode, at the same time, inhibiting the photo-generated electron and hole in electrode composite, improving the performance of photo-electrochemical cell, making it under the one standard simulated sunlight irradiation. The saturated photocurrent density is as high as 6.5mA/cm 2. DETAILED DESCRIPTION - Preparing environment-friendly zinc-silver-indium-selenium quantum dot sensitized doped light anode involves preparing titanium dioxide barrier layer cleaning substrate and drying, the titanium-nano oxide solution spin coating on the substrate, then calcining to obtain titanium dioxide barrier layer, preparing graphene oxide doped titanium dioxide light anode oxidized graphite alkene of ethanol dispersion, titanium dioxide slurry and dispersant mixing ultrasonic, and drying to 1/5 of the volume of the original mixture under the vacuum condition to obtain the slurry, coating the slurry on the titanium dioxide barrier layer, forming the titanium dioxide light anode doped with graphene oxide after moulding, shaping, heating and heat preservation, synthesizing environment-friendly zinc-silver-indium-selenium quantum dot: dissolving zinc acetate, silver nitrate and indium acetate in the mixed organic solvent to obtain the reaction liquid, then adding the selenium precursor solution into the reaction liquid, heating and keeping the temperature until the quantum dot is completely grown to obtain zinc-silver-indium-selenium quantum dot solution. The zinc-silver-indium-selenium quantum dot solution is mixed with organic solvent, vibrated and centrifuged to obtain supernatant, then added ethanol into the clear solution, centrifuged to obtain precipitate and dissolved the precipitate in toluene to obtain deposition liquid. The titanium dioxide anode doped with graphene oxide and deposition liquid are used to construct electrophoresis device for electrophoretic deposition to obtainenvironment-friendly zinc silver indium selenium quantum dot sensitized titanium dioxide light anode doped with graphene oxide, placed the light anode obtained in the zinc source and the sulphur source for soaking, dried for 45-75 seconds, repeatedly soaked, washed and dried for 1-2 times. An INDEPENDENT CLAIM is included for a photo-electrochemical cell, which comprises a light anode, platinum counter electrode, 3 mole/L potassium chloride silver/silver chloride reference electrode and 0.25 mole/L sodium sulphide and 0.35 mole/L sodium sulfite mixed solution (pH of 13) of the electrolyte.