# Influence of SiO2 and TiO2 dielectric layers on the atomic intermixing of InxGa1-xAs/InP quantum well structures
> Gareso P.

URL kanonis: https://discover.unhas.ac.id/publications/influence-of-sio2-and-tio2-dielectric-layers-on-the-atomic-intermixing-of-inxga1
Jurnal / Konferensi: Semiconductor Science and Technology
Tahun terbit: 2007
DOI: https://doi.org/10.1088/0268-1242/22/9/002
ISSN: 02681242
Kuartil SJR: Q2
Citations: 16

## Authors
- Gareso P.

## Abstract
We have studied the influence of SiO2 and TiO2 dielectric layers on the atomic intermixing of InxGa1−xAs/InP quantum well structures using the impurity-free vacancy disordering technique. Photoluminescence results revealed that an enhancement of interdiffusion was obtained when the samples were capped with SiO2. Although TiO2 layers were able to suppress the interdiffusion in the InGaAs/InP system, the suppression was not significant compared to the AlGaAs/GaAs system. Based on a fitting procedure that was deconvoluted from the photoluminescence spectra as well as a theoretical modeling, the electron–heavy hole and electron–light hole transitions were identified, and a ratio of the group V to the group III diffusion coefficients (k) was obtained. The k ratio of the InGaAs/InP samples capped with SiO2 is relatively larger than that of samples capped with TiO2 layers.

## Keywords
- Photoluminescence
- Dielectric
- Impurity
- Vacancy defect
- Diffusion
- Quantum well
- Analytical Chemistry (journal)
- Materials science
- Spectral line
- Chemistry
- Condensed matter physics
- Optoelectronics
- Crystallography
- Optics
- Chromatography
- Laser
- Organic chemistry
- Thermodynamics
- Astronomy
- Physics

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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