Isopropanol-treated PEDOT:PSS as electron transport layer in polymer solar cells

被引：42
作者：
Zhang, Wenfeng [1 ,2 ]
Bi, Xianghong [1 ]
Zhao, Xuemei [1 ]
Zhao, Zhiqiang [1 ]
Zhu, Jun [3 ]
Dai, Songyuan [3 ]
Lu, Yalin [1 ]
Yang, Shangfeng [1 ]
机构：
[1] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers,Hefei Natl Lab Phy, Hefei 230026, Peoples R China
[2] Anhui Agr Univ, Sch Engn, Hefei 230036, Peoples R China
[3] Chinese Acad Sci, Inst Plasma Phys, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Peoples R China
来源：
ORGANIC ELECTRONICS | 2014年 / 15卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Polymer solar cells; Hole transport layer; Electron transport layer; PEDOT:PSS; Work function; CATHODE BUFFER LAYER; 25TH ANNIVERSARY ARTICLE; KELVIN PROBE; EFFICIENCY ENHANCEMENT; PHOTOVOLTAIC CELLS; MORPHOLOGY; ANODES; CONDUCTIVITY; MICROSCOPY; INTERFACES;
D O I：
10.1016/j.orgel.2014.09.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isopropanol (IPA)-treated poly(3,4-ethylenedioxithiophene): poly(styrene sulfonate) (PEDOT:PSS) was applied as a new electron transport layer (ETL) in P3HT:PCBM bulk heterojunction polymer solar cell (BHJ-PSC) devices for the first time, revealing the electron transport property of IPA-treated PEDOT:PSS in sharp contrast to the well known hole transport property of the untreated PEDOT:PSS. Under the optimized condition for incorporating PEDOT:PSS ETL, the power conversion efficiency (PCE) of the ITO/untreated PEDOT:PSS (HTL)/P3HT:PCBM/IPA-treated PEDOT:PSS (ETL)/Al device (3.09%) is quite comparable to that of the reference ITO/untreated PEDOT:PSS (HTL)/P3HT:PCBM/Al device without any ETL (3.06%), and an annealing treatment of PEDOT:PSS ETL at 120 degrees C for 10 min led to a PCE of 3.25%, which even slightly surpasses that of the reference device, revealing the electron transport property of IPA-treated PEDOT:PSS. The electron transport property of IPA-treated PEDOT: PSS is interpreted by the lowering of the work function of PEDOT:PSS upon IPA treatment and incorporation as ETL as probed by scanning Kelvin probe microscopy (SKPM). (C) 2014 Elsevier B.V. All rights reserved.
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收藏
页码：3445 / 3451
页数：7
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