The Radiative Biexciton-exciton Recombination in Wurtzite Crystals

• Authors: W. Ungier
• Languages of publication: EN

Abstracts

EN

In the effective mass approximation in the two-band model of semiconductor the dipole moment matrix element due to the biexciton-exciton transition is expressed by the functional of the exciton and biexciton envelopes. In comparison to previous estimations of the biexciton-exciton transition probability the detailed band structure at band extrema was taken into account and the biexciton envelope optimized by variational calculation was used in calculations. The oscillator strength ratio I^{2}=f_{biex-ex}/f_{band-to-band} is given for several values of σ=m_{e}/m_{h}. The calculated functional I for CdS is about four times smaller compared to that obtained by Hanamura. The calculated giant oscillator strength of the biexciton-exciton recombination in CdS is f_{biex-ex}=4×10^{2}.

Keywords

EN

71.35.-y

Discipline

• 71.35.-y: Excitons and related phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 94
• Issue: 3
• Pages: 588-592

Dates

published

1998-09

Contributors

author

W. Ungier

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.94.588