Efficiency enhancement of inverted organic solar cells by introducing PFDTBT quantum dots into PCDTBT:PC71BM active layer

被引：14
作者：
Liu, Chunyu [1 ]
Guo, Wenbin [1 ]
Jiang, Huimin [1 ]
Shen, Liang [1 ]
Ruan, Shengping [2 ]
Yan, Dawei [3 ]
机构：
[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, Changchun 130012, Peoples R China
[3] CAEP, Res Ctr Laser Fus, Mianyang 621900, Peoples R China
来源：
ORGANIC ELECTRONICS | 2014年 / 15卷 / 10期
关键词：
PFDTBT quantum dots; Down-conversion; Charge transport property; POLYMER DOTS; TANDEM; PERFORMANCE; NANOPARTICLES; COPOLYMER; SPECTRUM; ACCEPTOR; DENSITY;
D O I：
10.1016/j.orgel.2014.07.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Poly{[2,7-(9-(20-ethylhexyl)-9-hexyl-fluorene])-alt-[5,50-(40,70-di-2-thienyl-20,10,30-benzothid-iazole)]} (PFDTBT) quantum dots (QDs) is synthesized by a facile approach and doped into organic solar cells (OSCs). The dependence of device performance on PFDTBT QDs in the blend film is investigated. The results show that short-circuit current density (J(sc)) is apparently enhanced while corresponding open-circuit voltage maintained, leading to an increase in power conversion efficiency (PCE). Maximum PCE of 6.81% is obtained, corresponding to a 23.8% enhancement compared with the undoped device. PFDTBT QDs can act as two kinds of role for improvement of OSCs' performance: one is improving the utilization ratio of ultraviolet light; the other is effectively improving charge transport property. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：2632 / 2638
页数：7
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