標題: Conducting polymer-based counter electrode for a quantum-dot-sensitized solar cell (QDSSC) with a polysulfide electrolyte
作者: Yeh, Min-Hsin
Lee, Chuan-Pei
Chou, Chen-Yu
Lin, Lu-Yin
Wei, Hung-Yu
Chu, Chih-Wei
Vittal, R.
Ho, Kuo-Chuan
光電工程學系
Department of Photonics
關鍵字: Conducting polymers;Counter electrode;Electrochemical polymerization;Electrocatalytic activity;Quantum-dot-sensitized solar cell
公開日期: 15-Dec-2011
摘要: Conducting polymer materials, i.e., polythiophene (PT), polypyrrole (PPy), and poly(3,4-ethylenedioxythiophene) (PEDOT) were used to prepare counter electrodes (CEs) for quantum-dot-sensitized solar cells (QDSSCs). The QDSSC with PEDOT-CE exhibited the highest solar-to-electricity conversion efficiency (eta) of 1.35%, which is remarkably higher than those of the cells with PT-CE (0.09%) and PPy-CE (0.41%) and very slightly higher than that of the cell with sputtered-gold-CE (1.33%). Electrochemical impedance spectra (EIS) show that this highest conversion efficiency of the PEDOT-based cell is due to higher electrocatalytic activity and reduced charge transfer resistance at the interface of the CE and the electrolyte, compared to those in the case of the cells with other conducting polymers and bare Au. Furthermore, the influences of morphology of the PEDOT film and the charge passed for its electropolymerization on the performance of its QDSSC were also studied. The higher porosity and surface roughness of the PEDOT matrix, with reference to those of other polymers are understood to be the reason for PEDOT to possess higher electrocatalytic activity at its interface with electrolyte. (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.electacta.2011.03.097
http://hdl.handle.net/11536/14977
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2011.03.097
期刊: ELECTROCHIMICA ACTA
Volume: 57
Issue: 
起始頁: 277
結束頁: 284
Appears in Collections:Conferences Paper


Files in This Item:

  1. 000298463900039.pdf