科研之友
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摘要
In this report, a novel and facile in situ gas-solid reaction method has been developed for the deposition of CdS quantum-dots (QDs) on a mesoscopic TiO2 film. In the approach, cadmium nitrate solution was first coated on mesoporous TiO2 films, and subsequently transformed into CdS QDs (with size about 2-3 nm) by reaction with hydrogen sulfide (H2S) gas generated in a closed container at room temperature. Different from the conventional solution techniques, this method offers new opportunities for rapid and facile deposition of CdS QD-coated TiO2 films without the introduction of the by-products. With the CdS QDs-decorated TiO2 active electrodes, the liquid and solid solar cells were fabricated with power conversion efficiencies (PCEs) of 1.90 and 0.80%, respectively.
- 出版日期2017-10
- 单位天津大学; 中国科学院
