https://scholars.lib.ntu.edu.tw/handle/123456789/378212
標題: | Co-sensitization promoted light harvesting for organic dye-sensitized solar cells using unsymmetrical squaraine dye and novel pyrenoimidazole-based dye | 作者: | Chang, J. Lee, C.-P. Kumar, D. Chen, P.-W. Lin, L.-Y. Thomas, K.R.J. Ho, K.-C. KUO-CHUAN HO |
關鍵字: | Co-adsorbate; Co-sensitization; Dye-sensitized solar cell; Organic dyes | 公開日期: | 2013 | 卷: | 240 | 起(迄)頁: | 779-785 | 來源出版物: | Journal of Power Sources | 摘要: | The pure organic dyes are investigated recently because of its high extinction coefficient and relatively low cost. In order to enhance the performance of the organic dyes, co-sensitization strategy is applied. The co-sensitization by the absorption of SQ2/5c shows enhanced photovoltaic performance for the pertinent DSSCs, which leads to a broader light harvesting window (400-750 nm) and a higher overall efficiency of 6.24% while the performances of DSSCs with the individual dyes are 5.33% (5c) and 3.98% (SQ2), respectively. Furthermore, the overall efficiency can be further improved to 6.71% with the incorporation of chenodeoxycholic acid (CDCA). In addition, the incident photon-to-current conversion efficiency (IPCE) and UV-visible absorption spectra are also used to explain and support the behavior of the co-sensitized solar cells. The investigation of the long-term stability of the DSSC based on cosensitization of SQ2/5c dyes with the use of binary ionic liquid is performed. The DSSC with the cosensitization strategy possesses an unfailing durability up to 1000 h. © 2013 Elsevier B.V. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84887980416&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/378212 |
DOI: | 10.1016/j.jpowsour.2013.04.075 |
顯示於: | 化學工程學系 |
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