Exciton transfer between localized states in ZnO quantum well structures

T. Makino, K. Saito, M. Kawasaki

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The dynamics of photocreated excitons in a CdZnO/MgZnO quantum well (QW) was studied by comparing the experimental photoluminescence (PL) data with the results of Monte Carlo simulations of the exciton hopping. The temperature-dependent PL linewidth was found to be in reasonable agreement with the model of exciton hopping, with an additional inhomogeneous broadening (Γ) accounted for. The simulation analysis revealed fluctuations of the band potential to be 20 meV with an additional inhomogeneous broadening of Γ = 29 meV, and a crossover from a non-thermalized to thermalized exciton energy distribution at about 100 K. In addition, a Bose-Einstein distribution like temperature dependence of the exciton energy in the wells was extracted using the data on the PL peak position.

本文言語English
ページ(範囲)206-211
ページ数6
ジャーナルSuperlattices and Microstructures
42
1-6
DOI
出版ステータスPublished - 2007 7
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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