https://scholars.lib.ntu.edu.tw/handle/123456789/338755
標題: | On the photophysical and electrochemical studies of dye-sensitized solar cells with the new dye CYC-B1 | 作者: | Chen, J.-G. Chen, C.-Y. Wu, S.-J. Li, J.-Y. Wu, C.-G. KUO-CHUAN HO |
關鍵字: | Dye-sensitized solar cells; Nanocrystallined TiO2; Ruthenium photosensitizer | 公開日期: | 2008 | 卷: | 92 | 期: | 12 | 起(迄)頁: | 1723-1727 | 來源出版物: | Solar Energy Materials and Solar Cells | 摘要: | In this study, the photoelectrochemical characteristics of a ruthenium photosensitizer with an alkyl bithiophene group, designated as CYC-B1, are studied. The effect of mesoporous TiO2 film thickness on the photovoltaic performance of CYC-B1 and N3 dye-sensitized solar cells was investigated. The performance of the dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) fabricated using CYC-B1 dye-anchored TiO 2 photoelectrode showed a convincing enhancement in cell efficiency when the TiO2 film thickness was increased from 3 μm (eff. = 5.41%) to 6 μm (eff. = 7.1935). The efficiency of the CYC-B1 -sensitized DSSC was maximum at 6 μm of the TiO2 film thickness, reached its limiting value and remained constant up to 53 μm, although a similar trend was also observed for N3 dye-sensitized DSSC, however, the maximum efficiency achieved was only at 27 μm thickness (eff. = 6.75%). As expected, the photocurrent density generated in the DSSC modified by CYC-B1 dye is larger than that from N3 dye. The effect of guanidinium thiocyanate (GuSCN) (additive) addition to the electrolyte on the photovoltaic performance of DSSCs based on CYC-B1 was also investigated. Furthermore, the electrochemical impedance spectroscopy (EIS) technique and photo-transient laser method have been employed to analyze the charge transfer resistances (Rct) and the lifetime of the injected electrons on the TiO2 containing different thicknesses. © 2008 Elsevier B.V. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-55349086153&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/338755 |
DOI: | 10.1016/j.solmat.2008.08.005 | SDG/關鍵字: | Charge transfer; Dyes; Efficiency; Electrochemical impedance spectroscopy; Electrolytes; Film thickness; Nanocrystals; Photosensitizers; Photovoltaic effects; Ruthenium; Solar cells; Solar power generation; Titanium dioxide; Charge transfer resistance; Electrochemical studies; Injected electrons; Maximum Efficiency; Nano-crystalline TiO; Photocurrent density; Photoelectrochemical characteristics; Photovoltaic performance; Dye-sensitized solar cells |
顯示於: | 化學工程學系 |
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