期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 129, 期 29, 页码 9144-9149出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja072147x
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We report photovoltaic cells based on solution-processed blends using a novel anthradithiophene derivative as the donor and a fullerene derivative as the acceptor. Solvent vapor annealing of these blends leads to the formation of spherulites, which consist of a network of anthradithiophene crystallites dispersed in an amorphous matrix composed primarily of fullerene. We observe a direct correlation between coverage of a device with spherulites and its performance. Devices with 82% spherulite coverage reach a power conversion efficiency of 1%, which makes them one of the highest performing solution-processed small molecule photovoltaic cells to date.
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