Photocurrent and electroluminescence spectra of InAs/GaAs quantum dots

Authors

Valynn Katrine Mag-usara ⋅ 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

Photocurrent (PC) and electroluminescence (EL) spectroscopy were performed on InAs/GaAs quantum dot and dot-in-a-well p-i-n devices. A blue-shifted photocurrent peak relative to the electroluminescence peak was revealed for the quantum dot p-i-n sample whereas a red-shifted PC peak was revealed for the dot-in-a-well device. Additional PC experiments showed that the blue-shift was not electric field-induced. The observed different energy shifts are explained in terms of dot size distribution and favored electron-hole recombination sites.

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Issue

2005: Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2005-PA-30

Section

Poster Session PA

Published

2005-10-26

How to Cite

[1]

VK Mag-usara, E Estacio, A Somintac, and A Salvador, Photocurrent and electroluminescence spectra of InAs/GaAs quantum dots, Proceedings of the Samahang Pisika ng Pilipinas 23, SPP-2005-PA-30 (2005). URL: https://proceedings.spp-online.org/article/view/SPP-2005-PA-30.