Materials and Device Physics, and Modeling

Analysis of surface recombination in nanowire array solar cells

[+] Author Affiliations
Shuqing Yu

Universitaet Kassel, Computational Electronics and Photonics Group, Wilhelmshoeher Allee 71, 34121 Kassel, Germany

Friedhard Roemer

Universitaet Kassel, Computational Electronics and Photonics Group, Wilhelmshoeher Allee 71, 34121 Kassel, Germany

Bernd Witzigmann

Universitaet Kassel, Computational Electronics and Photonics Group, Wilhelmshoeher Allee 71, 34121 Kassel, Germany

J. Photon. Energy. 2(1), 028002 (Sep 20, 2012). doi:10.1117/1.JPE.2.028002
History: Received April 8, 2012; Revised June 26, 2012; Accepted August 7, 2012
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Abstract.  In this work, microscopic three-dimensional simulations were performed on nanowire array solar cells to study the impact of surface recombination (SR) on the photovoltaic performance. Both axially and radially arranged p-n junction in III-V-based structures were taken into consideration. From the cases with SR velocity varying from 1e3cm/s to 1e6cm/s, the radial p-n-junction nanowire was found to provide better tolerance for SR. The SR difference within the axial and radial p-n-junction structures is explained by analyzing the relevant minority carrier density, followed by a discussion on the impact of SR on the diffusive nature of minority carriers.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Shuqing Yu ; Friedhard Roemer and Bernd Witzigmann
"Analysis of surface recombination in nanowire array solar cells", J. Photon. Energy. 2(1), 028002 (Sep 20, 2012). ; http://dx.doi.org/10.1117/1.JPE.2.028002


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