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Highly efficient cross-linked PbS nanocrystal/C60 hybrid heterojunction photovoltaic cells

Appl. Phys. Lett. 95, 183505 (2009); doi:10.1063/1.3257729

Published 5 November 2009

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S. W. Tsang,1 H. Fu,1 R. Wang,2 J. Lu,1 K. Yu,2 and Y. Tao1
1Institute for Microstructural Sciences, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
2Steacie Institute for Molecular Sciences, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
We present a highly efficient hybrid heterojunction photovoltaic (PV) cell with a colloidal inorganic nanocrystal (NC) electron donor and an organic electron acceptor. The heterojunction is formed by a thin film of cross-linked PbS NCs and a vacuum deposited C60 layer. Compared to the PbS-only PV cell, the heterojunction device has improved the power conversion efficiency from 1.6% to 2.2% under 1 sun of simulated Air Mass 1.5 Global (AM 1.5G) irradiation. The C60 layer effectively prevents exciton quenching at the NC/metal interface, as evidenced by a significant improvement in fill factor of the heterojunction devices. ©2009 American Institute of Physics
History: Received 8 September 2009; accepted 11 October 2009; published 5 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/183505/1
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KEYWORDS and PACS

Keywords
PACS
  • 85.60.-q
    Optoelectronic devices
  • 73.40.Lq
    Electrical properties of other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions
  • 81.15.-z
    Methods of deposition of films and coatings
  • 71.35.-y
    Excitons and related phenomena
  • 82.70.Dd
    Colloids
  • 61.46.Df
    Structure of nanocrystals and nanoparticles
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (11)
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