期刊
APPLIED PHYSICS LETTERS
卷 96, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3297876
关键词
cathodes; fullerenes; lithium compounds; organic compounds; solar cells
资金
- New Energy and Industrial Technology Development Organization (NEDO)
- Ministry of Education, Culture, Sports, Science and Technology of Japan
Reduced initial degradation of bulk heterojunction organic solar cells (OSCs) was achieved by inclusion of stacked fullerene (C(60)) and lithium fluoride interlayers. By inserting a 3 nm C(60) layer and a 0.5 nm LiF layer between the photoactive layer and Al cathode in an OSC, the device lifetime calculated after an initial 8 h continuous illumination period was dramatically improved, with a decrease of only 5% in the power conversion efficiency. The 3 nm C(60) layer forms a unique surface pattern of microscopic domes, and the combination of this layer with a 0.5 nm LiF layer formed an Ohmic-like contact between the photoactive layer and the Al cathode, resulting in a significant reduction in the degradation of the OSC.
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