Journal
PHYSICA B-CONDENSED MATTER
Volume 382, Issue 1-2, Pages 320-327Publisher
ELSEVIER
DOI: 10.1016/j.physb.2006.03.006
Keywords
bulk semiconductor; non-radiative recombination; intermediate band; impurity levels; deep centers; Mott transition
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There is a practical interest in developing semiconductors with levels situated within their band gap while preventing the non-radiative recombination that these levels promote. In this paper, the physical causes of this non-radiative recombination are analyzed and the increase in the density of the impurities responsible for the mid-gap levels to the point of forming bands is suggested as the means of suppressing the recombination. Simple models supporting this recommendation and helping in its quantification are presented. (c) 2006 Elsevier B.V. All rights reserved.
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