Local structure invariant potential for InxGa1-x as semiconductor alloys

Eun Ji Sim, Minwoo Han, Joost Beckers, Simon de Leeuw

Research output: Contribution to journalArticle

Abstract

We model lattice-mismatched group III-V semiconductor InxGa1-xAs alloys with the three-parameter anharmonic Kirkwood-Keating potential, which includes realistic distortion effect by introducing anharmonicity. Although the potential parameters were determined based on optical properties of the binary parent alloys InAs and GaAs, simulated dielectric functions, reflectance, and Raman spectra of alloys agree excellently with experimental data for any arbitrary atomic composition. For a wide range of atomic composition, InAs- and GaAs-bond retain their respective properties of binary parent crystals despite lattice and charge mismatch. It implies that use of the anharmonic Kirkwood-Keating potential may provide an optimal model system to investigate diverse and unique optical properties of quantum dot heterostructures by circumventing potential parameter searches for particular local structures.

Original languageEnglish
Pages (from-to)857-862
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume30
Issue number4
DOIs
Publication statusPublished - 2009 Oct 14

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Crystal lattices
Optical properties
Semiconductor materials
Binary alloys
Chemical analysis
Semiconductor quantum dots
Heterojunctions
Raman scattering
gallium arsenide
indium arsenide
III-V semiconductors

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Sim, Eun Ji ; Han, Minwoo ; Beckers, Joost ; de Leeuw, Simon. / Local structure invariant potential for InxGa1-x as semiconductor alloys. In: Bulletin of the Korean Chemical Society. 2009 ; Vol. 30, No. 4. pp. 857-862.
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Local structure invariant potential for InxGa1-x as semiconductor alloys. / Sim, Eun Ji; Han, Minwoo; Beckers, Joost; de Leeuw, Simon.

In: Bulletin of the Korean Chemical Society, Vol. 30, No. 4, 14.10.2009, p. 857-862.

Research output: Contribution to journalArticle

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