Improving power efficiencies in polymer -: polymer blend photovoltaics

被引：71
作者：
Breeze, AJ
Schlesinger, Z
Carter, SA [1 ]
Tillmann, H
Hörhold, HH
机构：
[1] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
[2] Natl Renewable Energy Lab, Golden, CO 80401 USA
[3] Univ Jena, D-6900 Jena, Germany
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2004年 / 83卷 / 2-3期
关键词：
polymer solar cells; polymer blends; charge transport; carrier mobility; exciton dissociation; M3EH-PPV; CN-ether-PPV; titanium dioxide solgel;
D O I：
10.1016/j.solmat.2004.02.029
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：
The use of blends of electron and hole transporting polymers has been shown to increase exciton dissociation and efficiency in polymer-based photovoltaics. We compare plain M3EH-PPV devices to M3EH-PPV:CN-ether-PPV blend devices, demonstrating the improved performance of blends. We vary the polymer layer thickness and device electrodes for M3EH-PPV:CN-ether-PPV polymer blend devices to investigate the factors limited device efficiency. We find that although the blends allow exciton dissociation to take place throughout the polymer layer, these devices are still limited by transport properties rather than by light absorption. Our best blend device, made with indium-tin oxide and Ca electrodes, gives a power conversion efficiency eta(p) = 1.0%. (C) 2004 Published by Elsevier B.V.
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收藏
页码：263 / 271
页数：9
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