Quantitative study of exciton migration effects on photoluminescence of quantum well

The effects, induced by the exciton (EX) migration and the inherent interface roughness, on the photoluminescence (PL) in a quantum well (QW) have been studied by a model which includes the inter- and intra-growth-island EX transfer. Analytical expressions, showing the redshifting and linewidth redu...

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Veröffentlicht in:	Applied physics letters 1993-05, Vol.62 (20), p.2569-2571
1. Verfasser:	Ping, Er-Xuan
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Physics
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Beschreibung
Zusammenfassung:	The effects, induced by the exciton (EX) migration and the inherent interface roughness, on the photoluminescence (PL) in a quantum well (QW) have been studied by a model which includes the inter- and intra-growth-island EX transfer. Analytical expressions, showing the redshifting and linewidth reduction in the PL spectrum, are obtained at low and high temperatures. The inconsistency of the PL and PL excitation spectra has been reexamined and quantitatively obtained, under the influence of the EX migration, as a function of the temperature, the quality, and the structure of the QW.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.109299