標題: Effects of mesoscopic poly (3,4-ethylenedioxythiophene) films as counter electrodes for dye-sensitized solar cells
作者: Lee, Kun-Mu
Chiu, Wei-Hao
Wei, Hung-Yu
Hu, Chih-Wei
Suryanarayanan, Vembu
Hsieh, Weng-Feng
Ho, Kuo-Chuan
光電工程學系
Department of Photonics
關鍵字: Conducting polymer;Dye-sensitized solar cells;Counter electrode;Poly(3,4-ethylenedioxythiophene);Carbon nanotubes
公開日期: 1-Jan-2010
摘要: Counter electrode coated with chemically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) in a dye-sensitized solar cell (DSSC) was studied. The surface morphology and the nature of I(-)/I(3)(-) redox reaction based on PEDOT film were investigated using Atomic Force Microscopy and Cyclic Voltammetry, respectively. The performance of the DSSCs containing the PEDOT coated electrode was compared with sputtered-Pt electrode. We found that the root mean square roughness decreases and conductivity increases as the molar ratio of imidazole (Im)/EDOT in the PEDOT film increases. The DSSC containing the PEDOT coated on fluorine doped tin oxide glass with Im/EDOT molar ratio of 2.0, showed a conversion efficiency of 7.44% compared to that with sputtered-Pt electrode (7.77%). The high photocurrents were attributed to the large effective Surface area of the electrode material resulting in good catalytic properties for T(3) reduction. Therefore, the incorporation of a multi-walled carbon nanotube (MWCNT) in the PEDOT film, coated on various substrates was also investigated. The DSSC containing the PEDOT films with 0.6 wt.% of MWCNT on stainless steel as counter electrode had the best cell performance of 8.08% with short-circuit current density, open-circuit voltage and fill factor of 17.00 mA cm(-2), 720 mV and 0.66, respectively. (C) 2009 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.tsf.2009.11.058
http://hdl.handle.net/11536/6017
ISSN: 0040-6090
DOI: 10.1016/j.tsf.2009.11.058
期刊: THIN SOLID FILMS
Volume: 518
Issue: 6
起始頁: 1716
結束頁: 1721
Appears in Collections:Articles


Files in This Item:

  1. 000274812200016.pdf