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

Authors

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

SPP 2006 Proceedings Cover

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Published

2006-10-25

Issue

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

Section

Materials Science

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How to Cite

[1]
“Optical spectra of InAs quantum dots in InGaAs/GaAs quantum wells”, Proc. SPP, vol. 24, no. 1, pp. SPP–2006, Oct. 2006, Accessed: Apr. 02, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2006-2B-01