Free Exciton Luminescence in ZnCdSe Solid Solutions, ZnSe Epitaxial Films and ZnSe_{1-x}S_{x}/ZnSe_{1-y}S_{y} Superlattices

• Authors: L. Tenishev , S. Permogorov , D. Fedorov , G. Yakushcheva , P. Kuznetsov
• Languages of publication: EN

Abstracts

EN

We studied the luminescence of bulk Zn_{1-x}Cd_{x}Se solid solutions, epitaxial ZnSe films and ZnSe_{1-x}S_{x}/ZnSe_{1-y}S_{y} superlattices at T=2-80 K. The analysis of the bands of exciton radiative annihilation with simultaneous emission of 1 or 2 LO phonons shows that the excitons in the studied samples can be considered as free particles with thermalized distribution of kinetic energies. In ZnSe_{1-x}S_{x}/ZnSe_{1-y}S_{y} superlattices a three-dimensional character of exciton motion was established. The periodic potential of superlattice perturbs the exciton wave vector and induces additional elastic scattering of excitons.

Keywords

EN

78.20.Ci

Discipline

• 78.20.Ci: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 5
• Pages: 959-964

Dates

published

1996-11

Contributors

author

L. Tenishev

• A.F. Ioffe Physical-Technical Institute, Polytechnicheskaya 26, St. Petersburg, 194021, Russia

author

S. Permogorov

• A.F. Ioffe Physical-Technical Institute, Polytechnicheskaya 26, St. Petersburg, 194021, Russia

author

D. Fedorov

• A.F. Ioffe Physical-Technical Institute, Polytechnicheskaya 26, St. Petersburg, 194021, Russia

author

G. Yakushcheva

• Institute of Radioengineering and Electronics, Russian Academy of Sciences, Vvedensky 1, Fryazino, Moscow Region, 141120, Russia

author

P. Kuznetsov

• Institute of Radioengineering and Electronics, Russian Academy of Sciences, Vvedensky 1, Fryazino, Moscow Region, 141120, Russia

Identifiers

DOI

10.12693/APhysPolA.90.959