掺杂阴离子对聚（3,4-亚乙基二氧噻吩）作为无碘固态染料敏化太阳能电池空穴导体的影响。

Influence of doped anions on poly(3,4-ethylenedioxythiophene) as hole conductors for iodine-free solid-state dye-sensitized solar cells.

作者信息

Xia Jiangbin, Masaki Naruhiko, Lira-Cantu Monica, Kim Yukyeong, Jiang Kejian, Yanagida Shozo

机构信息

Center for Advanced Science and Innovation, Osaka University, Suita, Osaka 565-0871, Japan.

出版信息

J Am Chem Soc. 2008 Jan 30;130(4):1258-63. doi: 10.1021/ja075704o. Epub 2008 Jan 3.

DOI:10.1021/ja075704o

PMID:18171061

Abstract

Poly(3,4-ethylenedioxythiophene) (PEDOT) is an excellent hole-conducting polymer able to replace the liquid I(-)/I3(-) redox electrolyte in dye-sensitized solar cells (DSCs). In this work we applied the in situ photoelectropolymerization technique to synthesize PEDOT and carried out a careful analysis of the effect of different doping anions on overall solar cell performance. The anions analyzed in this work are ClO4(-), CF3SO3(-), BF4(-), and TFSI(-). The best solar cell performance was observed when the TFSI(-) anion was used. Photoelectrochemical and impedance studies reveal that the doped anions in the PEDOT hole conductor system have great influences on I-V curves, conductivity, and impedance. The optimization of these parameters allowed us to obtain an iodine-free solid-state DSC with a maximum J(sc) of 5.3 mA/cm2, V(oc) of 750 mV, and a conversion efficiency of 2.85% which is the highest efficiency obtained so far for an iodine-free solid-state DSC using PEDOT as hole-transport material.

摘要

聚（3,4-乙撑二氧噻吩）（PEDOT）是一种优异的空穴传导聚合物，能够替代染料敏化太阳能电池（DSC）中的液态I(-)/I3(-)氧化还原电解质。在本工作中，我们应用原位光致聚合技术合成PEDOT，并仔细分析了不同掺杂阴离子对整个太阳能电池性能的影响。本工作中分析的阴离子有ClO4(-)、CF3SO3(-)、BF4(-)和TFSI(-)。当使用TFSI(-)阴离子时，观察到最佳的太阳能电池性能。光电化学和阻抗研究表明，PEDOT空穴导体体系中的掺杂阴离子对I-V曲线、电导率和阻抗有很大影响。这些参数的优化使我们能够获得一种无碘固态DSC，其最大J(sc)为5.3 mA/cm2，V(oc)为750 mV，转换效率为2.85%，这是迄今为止使用PEDOT作为空穴传输材料的无碘固态DSC所获得的最高效率。