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Photoreflectance study of N- and Sb-related modifications of the energy gap and spin-orbit splitting in InNAsSb alloys

Research output: Contribution to journalJournal article

Published

Article number011904
Journal publication date2011
JournalApplied Physics Letters
Journal number1
Volume99
Number of pages3
Original languageEnglish

Abstract

Photoreflectance spectroscopy has been used to study the energy gap and spin-orbit splitting in InNAsSb alloys containing different amounts of nitrogen and antimony. It has been observed that nitrogen mainly affects the conduction band, without having any influence on the spin-orbit splitting, whereas antimony significantly modifies the spin-orbit splitting. The N- and Sb-related modifications to the band structure lead to alloys which have a spin orbit splitting larger than the energy gap. Consequently, InNAsSb alloys are very promising for use in optoelectronic devices since they offer a route towards the reduction of non-radiative Auger recombination.