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Investigation of Optical Properties of Nitrogen Incorporated Sb based Quantum Well and Quantum Dots for Infrared Sensors Application
Published online by Cambridge University Press: 01 February 2011
Abstract
We report the growth and characterization of a new dilute nitride, InNAsSb/InAs, by solid source molecular beam epitaxy. Optimizing growth conditions for nitrogen incorporation has resulted in high-quality InNAsSb epilayers without any structural degradation, as confirmed by high-resolution x-ray diffraction. Optical properties were investigated by temperature dependent and excitation power dependent photoluminescence. We obtained mid-infrared luminescence around 4 mm at low temperature, which reveals strong carrier localization behavior at low temperature induced by nitrogen interacted with antimony. The band alignment of InNAsSb/InAs can be type-I and instead of conventional type-II, InAsSb/InAs, and a conduction band offset, Ec,of ∼102meV was obtained.
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- Copyright © Materials Research Society 2007