https://scholars.lib.ntu.edu.tw/handle/123456789/356483
標題: | Effects of crown ethers in nanocomposite silica-gel electrolytes on the performance of quasi-solid-state dye-sensitized solar cells | 作者: | Huang, K.-C. Vittal, R. Ho, K.-C. KUO-CHUAN HO |
關鍵字: | Conductive pathway; Crown ether; Nanocomposite silica; Quasi-solid-state dye-sensitized solar cell; Radius of cavity | 公開日期: | 2010 | 卷: | 94 | 期: | 4 | 起(迄)頁: | 675-679 | 來源出版物: | Solar Energy Materials and Solar Cells | 摘要: | The effects of crown ethers (CEs) on the performance of quasi-solid-state dye-sensitized solar cells (DSSCs) have been investigated. Nanocomposite silica was used to form gel matrices in the electrolytes, which contained lithium iodide (LiI) and iodine (I2) in 3-methoxypropionitrile (MPN) solvent. Three types of CEs, 12-crown-4 (12-C-4), 15-crown-5 (15-C-5), and 18-crown-6 (18-C-6) were used as additives to the gel electrolytes. DSSCs containing CEs showed enhancements in solar-to-electricity conversion efficiencies (η), with reference to the one without them. The crown ether, 15-C-5, with a size of cavity matching with the size of Li+ in the electrolyte rendered for its DSSC the best performance with an η of 3.60%, under 100 mW/cm2 illumination, as compared to 2.44% for the cell without any CE. Enhancements in the photovoltaic parameters of the cells with the CEs were explained based on the binding abilities of the CEs with lithium ions (Li+) in the electrolyte. Linear sweep voltammetry (LSV) measurements and electrochemical impedance spectra were used to substantiate the explanations. © 2009 Elsevier B.V. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-77649271070&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/356483 |
DOI: | 10.1016/j.solmat.2009.11.002 | SDG/關鍵字: | 18-crown-6; Binding abilities; Conductive pathway; Electrochemical impedance spectra; Gel electrolyte; Linear sweep voltammetry; Lithium iodide; Lithium ions; Photovoltaic parameters; Quasi-solid-state dye-sensitized solar cell; Quasi-Solid-State dye-sensitized solar cells; Conversion efficiency; Crown ethers; Ethers; Gels; Iodine; Ligands; Lithium; Nanocomposites; Organic compounds; Photoelectrochemical cells; Silica; Solid electrolytes; Solar cells |
顯示於: | 化學工程學系 |
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