Electroluminescence properties of InGaN/AlGaN/GaN light emitting diodes with quantum wells

被引:0
作者
Yunovich, AE [1 ]
Kudryashov, VE
Turkin, AN
Kovalev, AN
Manyakhin, FI
机构
[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow, Russia
[2] Moscow Steel & Alloys Inst, Moscow 117936, Russia
来源
MRS INTERNET JOURNAL OF NITRIDE SEMICONDUCTOR RESEARCH | 1999年 / 4卷
关键词
light-emitting diodes; heterostructures; quantum wells; nitrides; luminescence;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electroluminescence spectra of light-emitting diodes based on InGaN/AlGaN/GaN heterostructures with single and multiple quantum wells (QWs) are analyzed by models of radiative recombination in 2D-structures with band tails. Equations of the model fit spectra quite good in a wide range of currents. Parameters of the fit are discussed and compared for single and multiple QWs. Tunnel effects play a sufficient role in blue LEDs with single QWs at low currents; they can be neglected in LEDs with multiple QWs. A new spectral band was detected at the high energy side of the spectra of green LEDs with multiple QWs; it is attributed with large scale inhomogenities of In distribution in InGaN QWs.*).
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页数:6
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