Abstract
Abstract The preparation technologies of thin films are of great significance in the fields of photocatalysis and photoelectrochemistry. Reasonable design and construction of a thin-film photoelectrode is still a great challenge to improve its photoelectrochemical (PEC) performance and stability. In the present work, a novel three-dimensional (3D) sponge-like microporous CdS film was prepared using solvothermal method, and its PEC performance and stability were studied. With the increase of the hydrothermal treatment times, CdS crystalline grains continue to grow on the etched Ti substrate. The prepared CdS thin-film photoelectrode with 3D sponge-like microporous structure possesses excellent PEC performance, and its stability is also greatly improved. The 3D sponge-like microporous structure can significantly increase the light absorption and utilization and improve the conversion efficiency of the CdS thin-film photoelectrode, thereby enhancing its PEC performance. This work provides a new idea for the design and preparation of thin-film photoelectrodes with high PEC performance and stability
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