Bound exciton and free exciton states in GaSe thin slab

Bound exciton and free exciton states in GaSe thin slab

The photoluminescence (PL) and absorption experiments have been performed in GaSe slab with incident light polarized perpendicular to c-axis of sample at 10 K. An obvious energy difference of about 34 meV between exciton absorption peak and PL peak (the highest energy peak) is observed. By studying the temperature dependence of PL and absorption spectra, we attribute it to energy difference bet...

Exciton-phonon interaction in GaSe

Statistics of Exciton Emission in a Semiconductor Microcavity: Detuning and Exciton-Exciton Effects

We consider the interaction of quantum light with an ideal semiconductor microcavity. We investigate photon statistics in different conditions and the presence of detuning and exciton-exciton interaction. We show that in the resonant interaction and absence of the exciton-exciton interaction, the state of the whole system can be considered as   coherent state. According to our results, it turns...

Excited Terminal States of Bound Exciton Complexes

Emission from the excited terminal states of bound exciton-donor complexes has been observed in several I I — V I compounds. Studying these optical transitions allows one to determine the donor ionization energies, the electron effective masses as well as the electron (/-values in these materials. A good theoretical fit to the experimental data was obtained, using the effective mass approximati...

Zeeman spectroscopy of donor bound exciton states in ZnTe

2014 We have performed a series of Zeeman experiments on the lines corresponding to the recombination of the different states of the exciton bound to the neutral donor in ZnTe. This definitely proves that the lowest of these states has the expected 03938 symmetry of the valence band, while it displays a cubic anisotropy much larger than the one measured on neutral acceptor. The higher excited s...