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Barrier potential design criteria in multiple-quantum-well-based solar-cell structuresThe barrier potential design criteria in multiple-quantum-well (MQW)-based solar-cell structures is reported for the purpose of achieving maximum efficiency. The time-dependent short-circuit current density at the collector side of various MQW solar-cell structures under resonant condition was numerically calculated using the time-dependent Schroedinger equation. The energy efficiency of solar cells based on the InAs/Ga(y)In(1-y)As and GaAs/Al(x)Ga(1-x)As MQW structues were compared when carriers are excited at a particular solar-energy band. Using InAs/Ga(y)In(1-y)As MQW structures it is found that a maximum energy efficiency can be achieved if the structure is designed with barrier potential of about 450 meV. The efficiency is found to decline linearly as the barrier potential increases for GaAs/Al(x)Ga(1-x)As MQW-structure-based solar cells.
Document ID
19950040002
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mohaidat, Jihad M. (City Coll. & Graduate School of the City Univ. of NY, New York, NY, United States)
Shum, Kai (City Coll. & Graduate School of the City Univ. of NY, New York, NY, United States)
Wang, W. B. (City Coll. & Graduate School of the City Univ. of NY, New York, NY, United States)
Alfano, R. R. (City Coll. & Graduate School of the City Univ. of NY, New York, NY, United States)
Date Acquired
August 16, 2013
Publication Date
November 1, 1994
Publication Information
Publication: Journal of Applied Physics
Volume: 76
Issue: 9
ISSN: 0021-8979
Subject Category
SOLID-STATE PHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS3-1490
Distribution Limits
Public
Copyright
Other