Luminescence of cation excitons in and crystals in a wide excitation VUV region
- 1 January 1998
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 10 (3), 693-700
- https://doi.org/10.1088/0953-8984/10/3/020
Abstract
Host luminescence excitation spectra and reflection spectra of and crystals at low temperatures have been measured in the energy region of 4-30 eV using synchrotron radiation. High-efficiency host luminescence is connected to radiative decay of self-trapped cation excitons. It is shown that also in the region of excitation multiplication, e.g. if the excitation energy is larger than twice the band gap energy , and in the relaxation process of core excitons the radiative self-trapped cation excitons are formed. However, the recombination of hole and self-trapped electrons (band-band excitation) does not give rise to host luminescence.This publication has 14 references indexed in Scilit:
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