UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Band gap reduction in InNxSb1-x alloys: Optical absorption, k . P modeling, and density functional theory

Linhart, WM; Rajpalke, MK; Buckeridge, J; Murgatroyd, PAE; Bomphrey, JJ; Alaria, J; Catlow, CRA; ... Veal, TD; + view all (2016) Band gap reduction in InNxSb1-x alloys: Optical absorption, k . P modeling, and density functional theory. Applied Physics Letters , 109 (13) , Article 132104. 10.1063/1.4963836. Green open access

[thumbnail of Published article]
Preview
Text (Published article)
Linhart_Band gap reduction in InNxSb1-x alloys VoR.pdf - Published Version

Download (615kB) | Preview
[thumbnail of Supplementary information]
Preview
Text (Supplementary information)
Linhart_Band gap reduction in InNxSb1-x alloys Supplementary.pdf - Accepted Version

Download (56kB) | Preview

Abstract

Using infrared absorption, the room temperature band gap of InSb is found to reduce from 174 (7.1 μm) to 85 meV (14.6 μm) upon incorporation of up to 1.13% N, a reduction of ∼79 meV/%N. The experimentally observed band gap reduction in molecular-beam epitaxial InNSb thin films is reproduced by a five band k · P band anticrossing model incorporating a nitrogen level, EN, 0.75 eV above the valence band maximum of the host InSb and an interaction coupling matrix element between the host conduction band and the N level of β = 1.80 eV. This observation is consistent with the presented results from hybrid density functional theory.

Type: Article
Title: Band gap reduction in InNxSb1-x alloys: Optical absorption, k . P modeling, and density functional theory
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.4963836
Publisher version: http://dx.doi.org/10.1063/1.4963836
Language: English
Additional information: Copyright © 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics, Total-energy Calculations, Molecular-beam Epitaxy, Wave Basis-set, Dilute Innxsb1-x, Growth, Semiconductors, Metals, Red
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/1522318
Downloads since deposit
127Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item