A revised ideal model for AlGaAs/GaAs quantum well solar cells

Zahedi, A., and Lade, S.J. (2004) A revised ideal model for AlGaAs/GaAs quantum well solar cells. Microelectronic Journal, 35 (5). pp. 401-410.

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Abstract

Quantum well solar cells (QWSCs) are heterostructure devices intended to achieve higher efficiencies than conventional cells. This paper extends a previous model for QWSC current–voltage characteristics by revising the equations for the absorbed flux and by introducing expressions to calculate radiative recombination coefficients and well effective densities-of-states. This revised model is in agreement with previous experimental results for AlGaAs/GaAs. Since the revised model incorporates detailed balance calculations, its predictions are consistent with the efficiency restrictions of this theory. The revised model, however, does predict efficiency enhancements for QWSCs in some configurations if non-radiative recombination is dominant, even in such a poor QWSC material as AlGaAs/GaAs.

Item ID: 10759
Item Type: Article (Refereed Research - C1)
Keywords: Quantum well solar cell; Efficiency; Models; AlGaAs/GaAs
ISSN: 0959-8324
Date Deposited: 30 Apr 2010 04:11
FoR Codes: 09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090604 Microelectronics and Integrated Circuits @ 100%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy @ 100%
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