Metal salt modified PEDOT:PSS as anode buffer layer and its effect on power conversion efficiency of organic solar cells

被引:62
作者
Kadem, Burak [1 ]
Cranton, Wayne [1 ]
Hassan, Aseel [1 ]
机构
[1] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England
关键词
Organic solar cell; P3HT:PCBM; PEDOT:PSS; Metal salt treatment; Electrode modification; BULK; ENHANCEMENT; RESISTANCE; THICKNESS; FILMS;
D O I
10.1016/j.orgel.2015.05.019
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effects of metal chlorides such as LiCl, NaCl, CdCl2 and CuCl2 on optical transmittance, electrical conductivity as well as morphology of PEDOT:PSS films have been investigated. Transmittance spectra of spun PEDOT: PSS layers were improved by more than 6% to a maximum of 94% in LiCl doped PEDOT: PSS film. The surface of the PEDOT: PSS films has exhibited higher roughness associated with an increase in the electrical conductivity after doping with metal salts. The improvement in the physical properties of PEDOT: PSS as the hole transport layer proved to be key factors towards enhancing the P3HT:PCBM bulk heterojunction (BHJ) solar cells. These improvements include significantly improved power conversion efficiency with values as high as 6.82% associated with high fill factor (61%) and larger short circuit current density (similar to 18 mA cm(-2)). (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 79
页数:7
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