Optical and electrical properties of conducting polymer-functionalized carbon nanotubes nanocomposites

被引：13
作者：
Chehata, Nadia [1 ]
Ltaief, Adnen [1 ]
Bkakri, Rabeb [1 ]
Bouazizi, Abdelaziz [1 ]
机构：
[1] Fac Sci Monastir, Lab Mat Condensee & Nanosci, Equipe Dispositifs Elect Organ & Photovolta Mol, Monastir 5019, Tunisia
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2014年 / 22卷
关键词：
Conjugated polymer; Functionalized carbon nanotubes; Charge transfer; Photovoltaic effect; Conductivity; ORGANIC PHOTOVOLTAICS; DEVICE PERFORMANCE; SOLAR-CELLS; COMPOSITE; CRYSTALLINITY; DISPERSION; MORPHOLOGY; FILMS;
D O I：
10.1016/j.mssp.2014.02.010
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effects of incorporating functionalized multiwall carbon nanotubes with polystyrene (PSMWCNTs) in organic polymer solar cells were studied. Different concentrations of carbon nanotubes in poly(2-methoxy-5-(2-ethyhexyl-oxy)-p-phenylenevinylene) [MEH-PPV] were investigated via absorption spectroscopy, photoluminescence (PL) and current voltage measurements under illumination, in order to determine the photovoltaic effect of the elaborated organic solar cells. The decrease in PL intensity with the progressive addition of PSMWCNTs is a signature of an effective charge transfer at MEH-PPV/ PSMWCNTs heterojunction. Moreover, the addition of carbon nanotubes (CNTs) to the polymer increases the power conversion efficiency compared with the device with pristine polymer. A critical concentration value of 0.15 wt% of PSMWCNTs is found to achieve the best performance of devices. Direct current conductivity of the composite film was found to increase rapidly with the increase in PSMWCNTs concentration. The enhancement in conductivity is explained in terms of percolation theory with an estimated percolation threshold of 0.092 wf%,. (C) 2014 Elsevier Ltd. All rights reserved.
引用
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页码：7 / 15
页数：9
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