https://scholars.lib.ntu.edu.tw/handle/123456789/338754
標題: | Performance of gelled-type dye-sensitized solar cells associated with glass transition temperature of the gelatinizing polymers | 作者: | Tu, C.-W. Liu, K.-Y. Chien, A.-T. Lee, C.-H. Ho, K.-C. Lin, K.-F. KUO-CHUAN HO |
關鍵字: | Conductivity; Dye-sensitized solar cell; Gel; Glass transition temperature; Photovoltaic | 公開日期: | 2008 | 卷: | 44 | 期: | 3 | 起(迄)頁: | 608-614 | 來源出版物: | European Polymer Journal | 摘要: | Poly(methyl acrylate) (PMA), poly(vinyl acetate) (PVAc) and poly(n-isopropylacrylamide) (PNIPAAm) with their respective Tg of 6, 32, and 145 °C were employed to gel the LiI/I2/tertiary butylpyridine electrolyte system for preparation of the gelled-type dye-sensitized solar cells (DSSC). The light-to-electricity conversion efficiencies of DSSCs gelled by PMA, PVAc, and PNIPAAm were 7.17%, 5.62%, and 3.17%, respectively under simulated AM 1.5 sunlight irradiation, implying that utilizing the polymer of lower Tg to gel the electrolytes leaded to better performance of the DSSCs. Their short-circuit current density and IPCE also showed the similar trend. Electrochemical impedance spectroscopy of the gelled DSSCs revealed that utilizing the polymer of lower Tg resulted in lower impedance associated with the Nernstian diffusion within the electrolytes. The results were consistent with the observation that the molar conductivity of gelled electrolytes was higher as the polymer of lower Tg was applied, which can be justified by Vogel-Tammann-Fulcher (VTF) equation. © 2008 Elsevier Ltd. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-39749184009&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/338754 |
DOI: | 10.1016/j.eurpolymj.2008.01.005 | SDG/關鍵字: | Dyes; Electrochemical impedance spectroscopy; Gelation; Glass transition; Polyamides; Polyvinyl acetates; Short circuit currents; Gelatinizing polymers; Molar conductivity; Solar cells |
顯示於: | 化學工程學系 |
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