Non-Monotonous Temperature Dependence of the Spectral Maximum of Photoluminescence in CdS/ZnSe Superlattices

Abstract

Macro- and micro-photoluminescence (PL) spectroscopy is applied to investigate exciton localization in cubic CdS/ZnSe type-II superlattices (SL) in the temperature range between 5 K and 35 K. The non-monotonous shift of the macro-PL maximum with increasing temperature reveals the kinetic contribution of acoustic-phonon-assisted exciton hopping processes. The kinetic theory of localized excitons has been generalized from zero to finite temperatures allowing for exciton hopping from low-energy to high-energy localized sites as well as for the upwards-downwards correlation. The results of kinetic theory are compared with those of computer simulation and the experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Jun 23, 2000
Accession Number
ADP013044

Entities

People

  • A. A. Kiselev
  • A. Dinger
  • E.. L. Ivchenko
  • M. Baldauf
  • S. A. Tarasenko

Organizations

  • Russian Academy of Sciences

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Band Gaps
  • Computer Simulations
  • Computers
  • Crystal Lattice Vibrations
  • Energy
  • Energy Bands
  • Excitons
  • Experimental Data
  • Kinetic Theory
  • Low Temperature
  • Probability
  • Quantum Wells
  • Simulations
  • Spectra
  • Spectroscopy
  • Superlattices
  • Technical Information Centers

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics