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Applied Physics Letters / Volume 96 / Issue 3 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 96, 033110 (2010); http://dx.doi.org/10.1063/1.3284657 (3 pages)

Polymer functionalized n-type single wall carbon nanotube photovoltaic devices

Zhongrui Li1, Viney Saini1, Enkeleda Dervishi1, Vasyl P. Kunets2, Jianhui Zhang3, Yang Xu1, Alexandru R. Biris4, Gregory J. Salamo2, and Alexandru S. Biris1

1Nanotechnology Center, University of Arkansas—Little Rock, Little Rock, Arkansas 72204, USA
2Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA
3Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
4National Institute for Research and Development of Isotopic and Molecular Technologies, P.O. Box 700, Cluj-Napoca R-400293, Romania

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(Received 28 October 2009; accepted 12 December 2009; published online 20 January 2010)

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.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

adsorbed layers, carbon nanotubes, nanotube devices, p-n heterojunctions, polymer films, solar cells

PACS

  • 88.40.H-

    Solar cells (photovoltaics)

  • 73.63.Fg

    Nanotubes

  • 85.35.Kt

    Nanotube devices

  • 73.61.Ph

    Polymers; organic compounds

  • 73.40.Lq

    Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions

  • 68.43.-h

    Chemisorption/physisorption: adsorbates on surfaces

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3284657

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

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