期刊
ORGANIC ELECTRONICS
卷 11, 期 4, 页码 705-709出版社
ELSEVIER
DOI: 10.1016/j.orgel.2009.12.024
关键词
Organic solar cell; Work function; Subphthalocyanine
资金
- Defense Advanced Research Projects Agency (DARPA) [W911NF-09-1-0034]
- Global Photonic Energy Corp.
We demonstrate high-efficiency small-molecule photovoltaic cells based on subphthalocyanine (SubPc)/C-60 planar heterojunctions with an inverted layer sequence compared with conventional organic cells. The top-illuminated inverted device achieves a power conversion efficiency of 2.4 +/- 0.2%, or approximately 75% that of a conventional planar SubPc/C-60 solar cell on indium tin oxide-coated glass (with a power efficiency of 3.3 +/- 0.1%). The open-circuit voltage of the inverted devices, optimized by tailoring the work function of the layers adjacent to the donor and acceptor, is comparable to the conventional cell. This work suggests that the inverted devices are promising for use on opaque and/or flexible surfaces. (C) 2010 Elsevier B. V. All rights reserved.
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