Fabrication of PEDOT films via a facile method and their application in Pt-free dye-sensitized solar cells

被引：16
作者：
Li, Yin-Chang [1 ,2 ]
Jia, Song-Ru [1 ,2 ]
Liu, Zhi-Yan [1 ,2 ]
Liu, Xue-Qin [1 ,2 ]
Wang, Yang [1 ,2 ]
Cao, Ya [1 ,2 ]
Hu, Xiao-Qin [1 ,2 ]
Peng, Cheng-Long [1 ,2 ]
Li, Zhen [1 ,2 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem, 388 Lumo Rd, Wuhan 430074, Peoples R China
[2] China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, 388 Lumo Rd, Wuhan 430074, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 17期
关键词：
COUNTER ELECTRODE; GRAPHENE;
D O I：
10.1039/c7ta00990a
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Poly(3,4-ethylenedioxythiophene) (PEDOT) has attracted much attention in the application of dyesensitized solar cells (DSSCs) due to its outstanding photovoltaic property. PEDOT films were synthesized in a three-electrode system with a direct-current power supply to control the polymerization process, leading to a simplification of the electrochemical polymerization procedure. The morphology of PEDOT can be represented as a micro-sphere with three-dimensional network-like structures aggregated with plenty of nanoparticles. The polymerization voltage, polymerization time and the concentration of 3,4-ethylenedioxythiophene (EDOT) exhibited a significant influence on the photovoltaic characteristics of PEDOT films. Impressively, the DSSCs with optimum PEDOT films as counter electrodes (CEs) reached the highest power conversion efficiency (eta) of 6.401%, which was comparable to that of a cell with platinum (Pt) CEs (6.493%). After modification by reduced graphene oxide (rGO), DSSCs equipped with PEDOT/rGO CEs reached an eta of 7.115%, with an enhancement of 9.58% compared to that of Pt CEs. Thus, the rGO-coated network-like PEDOT can be considered as an economical alternative component to expensive Pt electrodes.
引用
收藏
页码：7862 / 7868
页数：7
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