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Applied Physics Letters / Volume 96 / Issue 24 / DEVICE PHYSICS

Appl. Phys. Lett. 96, 243505 (2010); http://dx.doi.org/10.1063/1.3453757 (3 pages)

Tube-based geometries for organic photovoltaics

Yuan Li1, Eric D. Peterson1, Huihui Huang1,2, Mingjun Wang1,2, Dan Xue3, Wanyi Nie1, Wei Zhou1, and David L. Carroll1

1Department of Physics, Center for Nanotechnology and Molecular Materials, Wake Forest University, Winston-Salem, North Carolina 27109, USA
2Department of Electronic Science and Technology, School of Physical Science and Technology, Wuhan University, Wuhan 430072, People's Republic of China
3Department of Mathematics, Beijing Jiaotong University, Beijing 100044, People's Republic of China

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(Received 7 November 2009; accepted 17 May 2010; published online 17 June 2010)

We demonstrate a waveguiding tube-based optical geometry that provides a general approach to improving organic photovoltaic performance. By fabricating bulk-heterojunction photovoltaics onto thin tubular light pipes, the optical energy can be effectively captured within the absorbing layer without associated reflective losses at the front and rear surfaces of the devices as is typical in planar structures. We have used a common absorber system: poly-3-hexyl-thiophene:phenyl-C61-butyric-acid-methyl-ester to demonstrate these tubular optical geometries result in very little overall radiative loss. Surprisingly, this also leads to an overall broadening of the absorption window for the device as indicated by the external quantum efficiency.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

conducting polymers, optical waveguides, organic semiconductors, solar cells

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3453757

PUBLICATION DATA

ISSN

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

Publisher

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

For access to fully linked references, you need to log in.
    J. W. Liu, M. A. G. Namboothiry, and D. L. Carroll, Appl. Phys. Lett. 90, 133515 (2007)APPLAB000090000013133515000001.

    J. W. Liu, M. A. G. Namboothiry, and D. L. Carroll, Appl. Phys. Lett. 90, 063501 (2007)APPLAB000090000006063501000001.

    Y. Li, W. Zhou, D. Xue, J. W. Liu, E. D. Peterson, W. Y. Nie, and D. L. Carroll, Appl. Phys. Lett. 95, 203503 (2009)APPLAB000095000020203503000001.

    B. O'Connor, K. P. Pipe, and M. Shtein, Appl. Phys. Lett. 92, 193306 (2008)APPLAB000092000019193306000001.


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