Optical spectra of InAs quantum dots in InGaAs/GaAs quantum wells

Authors

Valynn Katrine Mag-usara National Institute of Physics, University of the Philippines Diliman
Jennette Mateo National Institute of Physics, University of the Philippines Diliman
Elmer Estacio National Institute of Physics, University of the Philippines Diliman
Armando Somintac National Institute of Physics, University of the Philippines Diliman
Arnel Salvador National Institute of Physics, University of the Philippines Diliman

Abstract

Optical properties of InAs quantum dots in InGaAs wells are probed using roomtemperature photocurrent (PC) and electroluminescence (EL) spectroscopy. The EL spectra of the embedded InAs dots revealed wellresolved narrowspaced peaks. Comparison with the PC results showed that the narrow spacing of the EL peaks is not due to Fabry–Perot modes nor due to quantum dot energy transitions. The occurrence of the peaks are attributed to stimulated multiple phonon emission involving both InAs longitudinal optic (LO) and longitudinal acoustic (LA) phonons.

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Issue

2006: Proceedings of the 24th Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP-2006-2B-01

Section

Materials Science

Published

2006-10-25

How to Cite

[1]

VK Mag-usara, J Mateo, E Estacio, A Somintac, and A Salvador, Optical spectra of InAs quantum dots in InGaAs/GaAs quantum wells, Proceedings of the Samahang Pisika ng Pilipinas 24, SPP-2006-2B-01 (2006). URL: https://proceedings.spp-online.org/article/view/SPP-2006-2B-01.