The electronic and optical properties of InGaN-based solar cells alloys: First-principles investigations via mBJLDA approach

A. Laref (), A. Altujar and S.J. Luo

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 11, 1-11

Abstract: First-principles calculations of the electronic and optical properties of the bulk In x Ga 1 − x N alloys are simulated within the framework of full-potential linearized augmented plane-wave (FP-LAPW) method. To this end, a sufficiently adequate approach, namely modified Becke-Johnson (mBJLDA) exchange correlation potential is employed for calculating the energy band gap and optical absorption of InGaN-based solar cells systems. The quantities such as the energy gap, density of states, imaginary part of dielectric function, refractive index and absorption coefficient are determined for the bulk In x Ga 1−x N alloys, in the composition range from x = 0 to x = 1. It is found that the indium composition robustly controls the variation of band gap. From the examination of the density of states and optical absorption of In x Ga 1−x N ternary alloys, the energy gaps are significantly reduced for largest In concentration. The computed band gaps vary nonlinearly with the composition x. It is also surmised that the significant variation in the band gaps elaborated via the experimental crystalline growth process, is originated by altering the In composition. Interestingly, it is worthwhile to perform InGaN solar cells alloys with improved efficiencies, because of their entire energy gap variation from 0.7 to 3.3 eV. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2013
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1140/epjb/e2013-40487-2 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:86:y:2013:i:11:p:1-11:10.1140/epjb/e2013-40487-2

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2013-40487-2

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().