Enhanced photovoltaic performance in inverted polymer solar cells using Li ion doped ZnO cathode buffer layer

被引：27

作者：

Chen, Guo ^{[1
]}

Wang, Taohong ^{[1
]}

Li, Chunya ^{[1
]}

Yang, Lianqiao ^{[1
]}

Xu, Tao ^{[1
]}

Zhu, Wenqing ^{[1
]}

Gao, Yulai ^{[2
]}

Wei, Bin ^{[1
]}

机构：

[1] Shanghai Univ, Minist Educ, Key Lab Adv Display & Syst Applicat, Shanghai 200072, Peoples R China

[2] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China

来源：

ORGANIC ELECTRONICS | 2016年 / 36卷

基金：

上海市自然科学基金;

关键词：

ZnO; Li ion; Polymer solar cell; Inverted; Diffusion; POWER CONVERSION EFFICIENCY; ELECTRON INJECTION LAYER; CONJUGATED POLYMER; SQUARAINE DYES; FILM; INTERLAYER; LUMINESCENCE; DONOR;

D O I：

10.1016/j.orgel.2016.05.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have proposed an approach to improve the photovoltaic performance of inverted polymer solar cells (i-PSC) using lithium ion doped ZnO (Li-ZnO) as cathode buffer layer (CBL). The Li-ZnO CBL was prepared using the diffusion technique, performed by inducing the Li ion of 8-hydroxyquinolatolithium (Liq) to diffuse into ZnO film through annealing the bi-layer ZnO/Liq film. Doping concentration of Li ion was controlled by using various thickness of Liq film and annealing temperature. Based on Li-ZnO CBL, the poly (3-hexylthiophene) [6,6]:-phenyl C61-butyric acid methyl ester (P3HT:PCBM) i-PSC device possessed a optimal power conversion efficiency (PCE) of 4.07%, which was 30% improved than that of the device with neat ZnO as CBL. The enhancement of the device performance could be attributed to the enhanced electron mobility and better band matching of the Li-ZnO CBL. Our finding indicates that the Li-ZnO film fabricated with relatively low temperature treatment has great potential for high-performance i-PSCs. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：50 / 56

页数：7

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