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Improving efficiency of organic photovoltaic cells with pentacene-doped CuPc layer

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7 Author(s)
Chen, Wei-Bing ; Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Honkong Special Administrative Region, China ; Xiang, Hai-Feng ; Xu, Zong-Xiang ; Bei-Ping Yan
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We have fabricated efficient heterojunction organic photovoltaic (OPV) cells based on pentacene-doped copper(II) phthalocyanine (CuPc) layer as donor and fullerene (C60) layer as acceptor. The power conversion efficiency of 4% pentacene-doped CuPc/C60 OPV cell (3.06%) is increased by 77% compared with that of the standard CuPc/C60 OPV cell (1.73%). The efficiency improvement can be attributed to the higher carrier mobility instead of the stronger photon absorption of the pentacene-doped CuPc layer.

Published in:

Applied Physics Letters  (Volume:91 ,  Issue: 19 )

Date of Publication:

Nov 2007

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