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Journal of Applied Physics / Volume 108 / Issue 4 / ARTICLES / Lasers, Optics, and Optoelectronics

J. Appl. Phys. 108, 043102 (2010); http://dx.doi.org/10.1063/1.3466980 (3 pages)

Enhancement of photovoltaic cell response due to high-refractive-index encapsulants

Ming Ma1, Frank W. Mont2, David J. Poxson2, Jaehee Cho2, E. Fred Schubert2, Roger E. Welser3, and Ashok K. Sood3

1Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
2Department of Physics, Applied Physics, and Astronomy; Department of Electrical, Computer, and System Engineering; and Future Chips Constellation, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
3Magnolia Optical Technologies, Woburn, Massachusetts 01801, USA

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(Received 18 June 2010; accepted 22 June 2010; published online 18 August 2010)

This study compares the electrical output of photovoltaic (PV) cells encapsulated with silicones having different refractive indices to unencapsulated PV cells. It is demonstrated that the optical concentration ratio of dome-shaped concentrator PV systems can be increased by using a higher refractive-index encapsulant. The short-circuit photocurrent of the PV cell having high-refractive-index encapsulation (n = 1.57) is 71% higher than that of the PV cell having a low-refractive-index encapsulation (n = 1.41), and 316% higher than that of the unencapsulated PV cell. These experimental concentration-ratio enhancements are consistent with the theoretical estimates of concentration ratio dependence on the refractive index of the PV concentrator.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium compounds, gallium compounds, III-V semiconductors, indium compounds, photoconductivity, photovoltaic cells, refractive index, silicones

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3466980

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

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

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