𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Resonance LO Phonon-Assisted Luminescence and Light and Heavy Excitons in NaI Crystals

✍ Scribed by A. A. O'connel-Bronin

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
525 KB
Volume
129
Category
Article
ISSN
0370-1972

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The resonance multiphonon luminescence spectra of NaI single crystals are investigated experimentally in the temperature region of 4.2 to 65 K. A detailed investigation of the temperature dependence of peak energies and the intensities of the components of the luminescence spectrum as well as a theoretical analysis reveal an unknown component in the region of the zero‐phonon line. This component is interpreted in the framework of the model of light and heavy excitons. On the basis of experimental data for NaI the energy Ξ”, induced by the short‐range part of exchange interaction, is evaluated. Peculiarities of resonance luminescence in alkali iodides are analysed by using the theory of resonance multiphonon luminescence developed in the studies of semiconductor crystals.

πŸ“œ SIMILAR VOLUMES

Phonon-assisted decay of excitons in ant
Phonon-assisted decay of excitons in anthracene crystals
✍ S. V. Marisova; E. N. Myasnikov; A. N. Lipovchenko πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 English βš– 450 KB

## Abstract The reflection spectra, __R__(Ο‰), are investigated from the (201) face of anthracene single crystals at low temperatures (4.2 to 60 K). Absence of surface effects makes possible to judge from the reflection curve on the spectral dependence of the decay parameter, Ξ³, due to exciton‐phono