Paper Title:
Modeling of the Light Emission Spectra of InGaN/GaN Quantum Well with Highly Doped Barriers
  Abstract

We investigate light emission spectra at different excitation levels of nanoscale thin InGaN film participating in an InGaN/GaN quantum well (QW) with heavily doped barriers for green and blue light emitting diodes (LEDs). We model the spectral shape and energy position in frames of the free electron recombination model created first for highly doped 3D direct gap III-V semiconductor films and applied for QWs at low excitation. The model accounts for the influence on the potential width of the QW of the random impurity potential of the doped barriers which penetrates into the QW. The blue shift at high excitation is supposed to be due to the filling of the conduction band with degenerate 2D nonequilibrium electrons. A structure in the emission bands is observed and it is assumed to be a result from step-like 2D density-of-states (DOS) in the QW. A good agreement is obtained between the calculated and experimental spectra assuming that the barriers are graded.

  Info
Periodical
Solid State Phenomena (Volume 159)
Edited by
Lilyana Kolakieva and Roumen Kakanakov
Pages
71-76
DOI
10.4028/www.scientific.net/SSP.159.71
Citation
B. Arnaudov, D. S. Domanevskii, S. Evtimova, C. Ivanov, R. Kakanakov, "Modeling of the Light Emission Spectra of InGaN/GaN Quantum Well with Highly Doped Barriers", Solid State Phenomena, Vol. 159, pp. 71-76, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wei Chang Hao, Jun Ying Zhang, Hai Bing Feng, Tian Min Wang
Abstract:Quantum size ZnO colloids were prepared by sol-gel method and size of colloids together with the luminescence properties were changed by...
281
Authors: Jian Hua Chen, Mao Sheng Yao, Xiao Lin Wang, Juan Juan Feng
Abstract:This paper has systematically investigated the effects of 13 metal ion dopants on the photoreactivity and UV adsorption of TiO2...
2722
Authors: Ling He, Wei Min Sun, Yu Tian Ding, Yu Hua Wang
Optical/Electronic/Magnetic Materials
Abstract:A novel phosphor, Gd2MoB2O9:Eu3+ has been synthesized by solid-state reaction and its...
1327