Open AccessStructural, electrical and luminescent characteristics of ultraviolet light emitting structures grown by hydride vapor phase epitaxy
Author(s) -
A. Y. Polyakov,
Jin−Hyeon Yun,
A. Usikov,
E. B. Yakimov,
N. B. Smirnov,
К. Д. Щербачев,
H. Helava,
Yu.N. Makarov,
S Yu Kurin,
N. M. Shmidt,
Oleg Rabinovich,
S. Didenko,
С. А. Тарелкин,
Б. П. Папченко,
In−Hwan Lee
Publication year - 2017
Publication title -
modern electronic materials
Language(s) - English
Resource type - Journals
eISSN - 2452-2449
pISSN - 2452-1779
DOI - 10.1016/j.moem.2017.04.002
Subject(s) - materials science , electroluminescence , optoelectronics , light emitting diode , heterojunction , epitaxy , photoluminescence , hydride , luminescence , superlattice , diode , ultraviolet , vapor phase , composite material , metal , metallurgy , physics , layer (electronics) , thermodynamics
Electrical and luminescent properties of near-UV light emitting diode structures (LEDs) prepared by hydride vapor phase epitaxy (HVPE) were studied. Variations in photoluminescence and electroluminescence efficiency observed for LEDs grown under nominally similar conditions could be attributed to the difference in the structural quality (dislocation density, density of dislocations agglomerates) of the GaN active layers, to the difference in strain relaxation achieved by growth of AlGaN/AlGaN superlattice and to the presence of current leakage channels in current confining AlGaN layers of the double heterostructure