无序量子阱激子局域化与发光光谱的关系

IF 1.5 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Physica Status Solidi B-basic Solid State Physics Pub Date : 2002-11-01 DOI:10.1002/1521-3951(200211)234:1<443::AID-PSSB443>3.0.CO;2-R

U. Jahn, H. Grahn

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引用次数: 2

摘要

我们报道了在非常不同的条件下通过分子束外延生长的量子阱中激子局域化的基本物理方面。讨论了GaAs/(Al, Ga)As量子阱中光致发光(PL)、PL激发和μ-PL光谱之间的关系以及量子阱中激子的有效迁移边界。研究了(in, Ga)N/GaN和GaN/(Al, Ga)N多量子阱中激子局域化对量子效率的影响，这是该材料体系在短波长的光源中应用的一个重要问题。

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The relation between exciton localization and luminescence spectra for disordered quantum wells

We report on basic physical aspects of exciton localization in quantum wells (QWs) grown by molecular-beam epitaxy under very different conditions. For GaAs/(Al, Ga)As QWs, the relation between photoluminescence (PL), PL excitation, and μ-PL spectra, as well as the effective mobility edge of excitons in QWs are discussed. Exciton localization in (In, Ga)N/GaN and GaN/(Al, Ga)N multiple QWs is investigated to determine its influence on the quantum efficiency, which is an important issue for the application of this material system in short-wavelength light emitters.

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来源期刊

Physica Status Solidi B-basic Solid State Physics 物理-物理：凝聚态物理

CiteScore

3.30

自引率

6.20%

发文量

321

审稿时长

2 months

期刊介绍： physica status solidi is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state and materials physics, from basic science to applications and devices. Being among the largest and most important international publications, the pss journals publish review articles, letters and original work as well as special issues and conference contributions. physica status solidi b – basic solid state physics is devoted to topics such as theoretical and experimental investigations of the atomistic and electronic structure of solids in general, phase transitions, electronic and optical properties of low-dimensional, nano-scale, strongly correlated, or disordered systems, superconductivity, magnetism, ferroelectricity etc.