Solution-processable functionalized graphene in donor/acceptor-type organic photovoltaic cells

被引：67
作者：
Liu, Zhiyong [1 ]
He, Dawei [1 ]
Wang, Yongsheng [1 ]
Wu, Hongpeng [1 ]
Wang, Jigang [1 ]
机构：
[1] Beijing Jiaotong Univ, Key Lab Luminescence & Opt Informat, Minist Educ, Inst Optoelect Technol, Beijing 100044, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2010年 / 94卷 / 07期
关键词：
Graphene; P3HT; HOMO; LUMO; OPEN-CIRCUIT VOLTAGE; POLYMER SOLAR-CELLS; DEVICES;
D O I：
10.1016/j.solmat.2010.03.004
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
An organic photovoltaic device based on an acceptor of solution-processable functionalized graphene (SPFGraphene) was designed. The devices were based on heterostructure polymer-graphene composite layers. The structural configuration of devices is ITO/PEDOT:PSS/P3HT:SPFGraphene/LiF/Al. Due to the functional groups of the graphene, a homogeneous blend of graphene-polymer composite could be obtained. In the graphene-polymer composite, the graphene acted as exciton dissociation sites and provided the transport pathway of LUMO-graphene-Al. Doping of graphene into P3HT resulted in appropriate energetic distance between HOMO and LUMO of the donor/acceptor for a high open circuit voltage and provided higher exciton dissociation volume mobility of carrier transport for a large short-circuit current density. The device containing only 10 wt% of graphene shows the best performance with a power conversion efficiency of 0.88%, an open-circuit voltage of 0.77 V. and a short-circuit current density of 3.72 mA/cm(2). (C) 2010 Elsevier B.V. All rights reserved.
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收藏
页码：1196 / 1200
页数：5
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