期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 211, 期 15, 页码 1689-1694出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201000066
关键词
crystallization; fullerenes; polymer solar cells; structure-property relations; X-ray diffraction
资金
- Fonds der Chemischen Industrie
- Ministry of Culture Thuringia
Polymer/fullerene bulk heterojunction solar cells consisting of PDDTP:PCBM blends have been investigated and optimized. The structural properties of the photoactive layers were studied by GID-XRD, which revealed a pronounced response of photovoltaic parameters on the polymer crystallinity. In addition to P3HT, another donor polymer was found that develops crystalline domains upon annealing. We found a clear correlation between annealing time, power conversion efficiency, and polymer crystallinity. The PDDTP crystallization ability is a promising property. This is a first step toward the synthesis of low-bandgap polymers, which likewise show ability to form crystalline domains and may therefore lead to a substantial increase in efficiency.
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