Study on Sulfuration of ZIF-67 Thin Film for Counter Electrode of Squaraine-sensitized Solar Cell

doi:10.7517/issn.1674-0475.180203

Abstract

Abstract: Zeolitic-imidazole frameworks (ZIFs), as novel porous materials, have some special advantages such as large specific surface area, versatile porosity and well-connected networks. Here, we report porous composite materials of carbon and cobalt sulphide prepared by sulfuration of ZIF-67 thin film on the conducting glass. Then its catalytic performance was studied to replace platinum as the counter electrode for squaraine-sensitized solar cell. The structure and morphological characteristics of the sulfurating ZIF-67 porous thin films were obtained by X-ray diffraction, scanning electron microscope and isothermal adsorption measurements. The catalytic performance was evaluated by Tafel curve and electrochemical impedance spectrogram. It is concluded that the catalytic performance of sulfurating ZIF-67 for 60 min was compared with Pt, and the photoelectric conversion efficiency of the squaraine-sensitized solar cell was 4.03% and 4.10%, respectively.

Key words: ZIF-67, sulfuration, counter electrode, squaraine-sensitized solar cell

XU Wenjiao, ZHANG Jingbo, SUN Yuxiu, DING Bin, LIN Yuan. Study on Sulfuration of ZIF-67 Thin Film for Counter Electrode of Squaraine-sensitized Solar Cell[J]. Imaging Science and Photochemistry, 2018, 36(5): 381-388.

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