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Quantum and conversion efficiency calculation of AlGaAs/GaAs multiple quantum well solar cells
Author(s) -
Rimada J. C.,
Hernandez L.,
Connolly J. P.,
Barnham K. W. J.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200461764
Subject(s) - solar cell , photocurrent , quantum efficiency , quantum well , quantum , optoelectronics , energy conversion efficiency , materials science , physics , chemistry , optics , quantum mechanics , laser
The quantum well solar cell (QWSC) is a novel device that has been proposed by Barnham and co‐workers at Imperial College London. In this work, the quantum efficiency for AlGaAs/GaAs QWSC has been calculated and compared with available data from the group at Imperial College London. Quantum efficiency calculations will be presented and compared with experimental data for several AlGaAs/GaAs QWSC, obtaining good agreement. The photocurrent then is calculated from the quantum efficiency calculations and included in the J ( V ) relation to optimize the efficiency of AlGaAs/GaAs QWSC. It also shows that for a range of quantum well widths and barrier bandgaps the conversion efficiencies of the quantum well solar cell are higher than the corresponding homogeneous p–i–n solar cell. Our results give a broad representation of quantum well solar cell operation, and provide a profitable guide for designing and interpreting the performance characteristics of AlGaAs/GaAs QWSCs. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)