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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

First-Principles Study on Electronic Band Structure and Optical Constants of Synthesized Si3Al(AsxP1-x) Alloys

Get access (open in a dialog) DOI: 10.1615/IHTC15.rad.009384
pages 7135-7144

Abstract

Prior efforts have been devoted to search for ideal photovoltaic materials with high energy conversion efficiency. One significant effort is to focus on synthesizing functional materials with optimized electronic band structure and optical absorption spectrum. The recently nanosynthesized silicon-like Si3Al(As1-xPx) alloys demonstrate smaller energy gap than Si and are treating as the promising candidate for solar cell absorber. In this work, we calculate the electronic band structure, optical constants and thermal radiative properties of Si3Al(As1-xPx) alloys by the first-principles method, aiming to understand the intrinsic mechanism of the improved optical properties by mutating III-V compounds with Si . Moreover, the finite temperature radiative properties are calculated by the first principles molecular dynamics approach to obtain the thermal radiative properties of the alloys at normal conditions. This work aims to provide a route to understand and predict potential photovoltaic materials among III-V-IV compounds.