A Model of Radiative Recombination in (In,Al,Ga)N/GaN Structures with Significant Potential Fluctuations

被引：3

作者：

Drozdz, P. A. ^{[1
,2
]}

Korona, K. P. ^{[1
]}

Sarzynski, M. ^{[2
]}

Czernecki, R. ^{[2
]}

Skierbiszewski, C. ^{[2
]}

Muziol, G. ^{[2
]}

Suski, T. ^{[2
]}

机构：

[1] Univ Warsaw, Fac Phys, L Pasteura 5, PL-02093 Warsaw, Poland

[2] Polish Acad Sci, Inst High Pressure Phys Unipress, Sokolowska 29-37, PL-01142 Warsaw, Poland

来源：

ACTA PHYSICA POLONICA A | 2016年 / 130卷 / 05期

关键词：

TEMPERATURE-DEPENDENCE; QUANTUM-WELLS; PHOTOLUMINESCENCE; SEMICONDUCTORS; EXCITONS; LAYERS; SHIFT;

D O I：

10.12693/APhysPolA.130.1209

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The potential fluctuations in III-nitride quantum wells lead to many effects like emission broadening and S-shape energy vs. temperature dependence. The best description of the energy dependence comes from calculations based on Gaussian density of states. However, in most of the published reports, changes of carrier lifetime with energy and temperature are not taken into account. Since experimental evidence shows that lifetime significantly depends on energy and temperature, here we propose a model that describes two basic parameters of luminescence: lifetime of carries and emission energy as a function of temperature in the case of quantum wells and layers that are characterized by potential fluctuations. Comparison of the measured energy and lifetime dependences on temperature in specially grown InGaN/GaN quantum wells and InAlGaN layer shows very good agreement with the proposed theoretical approach.

引用

页码：1209 / 1212

页数：4

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