https://scholars.lib.ntu.edu.tw/handle/123456789/640124
標題: | Multifunctional Structure-Modified Quaternary Compounds Co9Se8-CuSe2-WSe2 Mixed with MWCNT as a Counter Electrode Material for Dye-Sensitized Solar Cells | 作者: | Liu, Rih Jia Chang, Ling Yu Lin, Fang Sian Lee, Yu Hsin Yeh, Min Hsin KUO-CHUAN HO |
關鍵字: | carbon nanotubes | DSSC | hollow spheres | oxygen plasma treatment | trimetallic selenide | 公開日期: | 24-一月-2024 | 卷: | 16 | 期: | 3 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | In this study, a trimetallic selenide material with a hollow spherical structure (Co9Se8-CuSe2-WSe2) was synthesized through two consecutive solvothermal reactions. The synergistic effect between the quaternary elements, the benefits of the selenization of metals, and the unique morphology led to the prominent electrocatalytic ability of Co9Se8-CuSe2-WSe2 hollow spheres. Co9Se8-CuSe2-WSe2 hollow spheres were then mixed with oxygen plasma-treated multiwalled carbon nanotubes (MWCNT) as counter electrode (CE) material for dye-sensitized solar cells (DSSCs), achieving a photoelectric conversion efficiency (η) of 9.23% under one sun condition (AM 1.5G, 100 mW cm-2), surpassing the 8.08% of devices with platinum counter electrodes (PtCEs). For indoor conditions, a T5 light source was applied to the DSSCs with Co9Se8-CuSe2-WSe2 + MWCNT CE, and the efficiency increased to 14.14% under 3600 lx irradiance. Finally, Co9Se8-CuSe2-WSe2 + MWCNT CE demonstrated good stability with 92.23% retention after 1000 cycles of cyclic voltammetry, exceeding the 82.49% of PtCE. Therefore, Co9Se8-CuSe2-WSe2 + MWCNT shows potential as a substitute for platinum as CE material for DSSCs. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/640124 | ISSN: | 19448244 | DOI: | 10.1021/acsami.3c16527 |
顯示於: | 化學工程學系 |
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