期刊
NANO LETTERS
卷 10, 期 11, 页码 4627-4633出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl102753z
关键词
Single-walled carbon nanotubes; P3HT; charge generation; charge recombination; time-resolved microwave conductivity; organic photovoltaic; polythiophene
类别
资金
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences [DE-AC36-08GO28308]
Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.
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