Stacked organic solar cells based on pentacene and C60

被引：61
作者：
Cheyns, David
Gommans, Hans
Odijk, Mathieu
Poortmans, Jef
Heremans, Paul
机构：
[1] IMEC VZW, B-3001 Louvain, Belgium
[2] Katholieke Univ Leuven, ESAT, B-3001 Louvain, Belgium
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2007年 / 91卷 / 05期
关键词：
planar heterojunction solar cells; stacked solar cells; fullerene; tandem;
D O I：
10.1016/j.solmat.2006.11.002
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：
In order to improve photon harvesting, two small molecule organic solar cells are placed in series on top of each other. These stacked cells need an efficient recombination center in between both cells. In this study we test vacuum deposited metal layers as recombination centers with pentacene and buckminsterfullerene (C-60) as donor and acceptor, respectively. S-shaped curves are visible in the I V characteristics when using thin layers of alluminium, indicating a barrier for extraction inside the device. Thin metal layers of gold or silver result in an increased open-circuit voltage without the appearance of these S-shaped features. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：399 / 404
页数：6
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