Drop-Dry Deposition of SnO2 Using a Complexing Agent and Fabrication of Heterojunctions with Co3O4

The drop-dry deposition (DDD) is a simple chemical technique of thin film deposition, which can be applied to metal oxides. solution an aqueous including salt and alkali. However, some ions react spontaneously with water precipitate. This work the first attempt use complexing agents in DDD suppress precipitation. SnO2 films are fabricated using Na2S2O3 as agent via annealing air. results Auger electron spectroscopy measurement show that O/Sn composition ratio annealed approached two, indicating SnO2. photoelectrochemical n-type. Co3O4/SnO2 heterojunction p-type Co3O4 also deposited DDD. has rectification photovoltaic properties. Thus, for time, oxide was successfully prepared agent, solar cells only