Effects of the graphene content on the conversion efficiency of P3HT: Graphene based organic solar cells

被引：20
|
作者：
Bkakri, R. [1 ]
Chehata, N. [1 ]
Ltaief, A. [1 ]
Kusmartseva, O. E. [2 ]
Kusmartsev, F. V. [2 ]
Song, M. [3 ]
Bouazizi, A. [1 ]
机构：
[1] Equipe Dispositifs Elect Organ & Photovolta Mol, Lab Mat Condensee & Nanosci, Fac Sci Monastir, Monastir 5019, Tunisia
[2] Univ Loughborough, Dept Phys, Loughborough LE11 3TU, Leics, England
[3] Univ Loughborough, Dept Mat, Loughborough LE11 3TU, Leics, England
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2015年 / 85卷
关键词：
Polymers; Thin films; Organic compounds; Electrical properties; CARBON NANOTUBES; SCATTERING;
D O I：
10.1016/j.jpcs.2015.05.020
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We investigate the effects of the insertion of graphene in the matrix of regioregular poly (3-hexylthiophene-2,5-diyl) (RR-P3HT) on the conversion efficiency of ITO/P3HT:Graphene/Au solar cells. The X-ray diffraction (XRD) measurements show that progressive addition of graphene reduces the degree of order of P3HT lamellae along the hexyl-side direction (a-axis). The insertion of low graphene content in the P3HT matrix reduces the RMS roughness of the P3HT thin film, and improves the optical absorption properties of the device in the visible range. However for high doping level we observe the formation of graphene aggregates which in turn reduces the optical absorption properties of the device. The observed effects arising after addition of graphene to P3HT, and their relationship with the conversion efficiency of the devices are discussed in this work. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：206 / 211
页数：6
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