Publication

Trions and excitons in CdTe quantum wells: Lifetimes, coherence, diffusion and localization

Benoît Marie Joseph Deveaud, Jean-Daniel Ganière, Marcia Portella Oberli, Victoria Ciulin, Stefan Haacke
2002
Journal Articles

Abstract

We present the results of a study of the dynamics of trions and excitons in a CdTe modulationdoped quantum well as a function of temperature in the low-density regime. Using three-pulse four-wave mixing technique, we show that, at low temperature, these quasi-particles are inhomo-geneously broadened and localized due to disorder effects. At higher temperatures, trions and excitons are mobile and their homogeneous broadening is largely increased as a result of acoustic phonon scattering. Consistently, time-resolved luminescence measurements also reveal a free-particle character for trions at high temperatures.

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https://infoscience.epfl.ch/entities/publication/53bd6bb5-ba08-440a-9c61-c896ddbdd088

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Benoît Marie Joseph Deveaud, Jean-Daniel Ganière, Marcia Portella Oberli, Victoria Ciulin, Stefan Haacke
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/53bd6bb5-ba08-440a-9c61-c896ddbdd088

About this result

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Trions and excitons in CdTe quantum wells: Lifetimes, coherence, diffusion and localization

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