標題: Dibenzo[f,h]thieno[3,4-b] quinoxaline-fullerene heterojunction bilayer solar cells with complementary spectrum coverage
作者: Kekuda, Dhananjaya
Huang, Jen-Shien
Velusamy, Marappan
Lin, Jiann T.
Chu, Chih-Wei
光電工程學系
Department of Photonics
關鍵字: Bilayer organic solar cell;Complementary spectrum coverage
公開日期: 1-Oct-2010
摘要: In the present article, potential of a bilayer organic solar cell has been investigated. We utilize newly synthesized small molecules, namely dibenzo[f,h]thieno[3,4-b]quinoxaline as electron donors for solar cells in heterojunction bilayer configuration. These small molecules with a narrow absorption band in the range 400-450 nm provide a complementary spectrum for the fullerene C(70), thereby leading to an overall power conversion efficiency of 2.6 +/- 0.2% under 100 mW/cm(2) incident radiation. Thermal annealing seems to impact the charge separation at the donor-acceptor interface, which eventually affects device performance. This work demonstrates that carefully optimized bilayer devices are comparable to the bulk heterojunction counterparts. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.solmat.2010.05.044
http://hdl.handle.net/11536/32095
ISSN: 0927-0248
DOI: 10.1016/j.solmat.2010.05.044
期刊: SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume: 94
Issue: 10
起始頁: 1767
結束頁: 1771
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