Polymer functionalized n-type single wall carbon nanotube photovoltaic devices

Photovoltaic conversion was achieved from high-density p-n heterojunctions formed between polymer functionalized n-type single wall carbon nanotubes (SWNTs) and underlying p-type Si substrate. Functionalization of SWNTs by amine-rich polymers results in the evolution of tubes from p-type to n-type,...

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Bibliographic Details
Published in:Applied physics letters 2010-01, Vol.96 (3), p.033110-033110-3
Main Authors: Li, Zhongrui, Saini, Viney, Dervishi, Enkeleda, Kunets, Vasyl P., Zhang, Jianhui, Xu, Yang, Biris, Alexandru R., Salamo, Gregory J., Biris, Alexandru S.
Format: Article
Language:English
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Summary:Photovoltaic conversion was achieved from high-density p-n heterojunctions formed between polymer functionalized n-type single wall carbon nanotubes (SWNTs) and underlying p-type Si substrate. Functionalization of SWNTs by amine-rich polymers results in the evolution of tubes from p-type to n-type, and the polyethylene imine (PEI) functionalized SWNT film can serve as both photogeneration sites and a charge carrier collecting/transport layer. Photoremoval of oxygen adsorbed on the nanotubes prior to PEI functionalization can increase the conversion efficiency of the polymer functionalized n-type SWNT photovoltaic devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3284657