Journal ArticleDOI
Control of excitonic and electron–hole processes in wide-gap crystals by means of elastic uniaxial stress
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TLDR
In this article, the time-resolved emission spectra and the excitation spectra of the main emissions have been measured for the rst time in stressed and unstressed RbI crystals using synchrotron radiation of 10{30 eV at 8 K.Abstract:
The time-resolved emission spectra and the excitation spectra of the main emissions have been measured for the rst time in stressed and unstressed RbI crystals using synchrotron radiation of 10{30 eV at 8 K. It has been shown that the applied elastic uniaxial stress (EUS) oers promise for the separation of the elementary multiplication mechanisms of electronic excitations. A dierent influence of EUS on the self-trapping of excitons or holes at 8 K has been discussed. The mean free path of free excitons decreases, while that of valence holes increases in a stressed RbI crystal.read more
Citations
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Radiation creation of cation defects in alkali halide crystals: Review and today's concept (Review Article)
TL;DR: In this article, the authors analyzed the possibility of cation interstitial-vacancy pair creation in anion and cation sublattices by irradiation of alkali halide crystals.
Journal ArticleDOI
Evolution of Anion and Cation Excitons in Alkali Halide Crystals
Ch. Lushchik,Aleksandr Lushchik +1 more
TL;DR: In this paper, the decay of anion excitons, yielding luminescence, and a particular type of nonradiative channel with the creation of elementary Frenkel defects (FDs) are considered.
Journal ArticleDOI
Luminescence of self-trapped excitons in alkali halide crystals at low temperature uniaxial deformation
L. Myasnikova,K. Shunkeyev,N. Zhanturina,Zh. Ubaev,A. Barmina,Sh. Sagimbaeva,Z. Aimaganbetova +6 more
TL;DR: In this article, the authors studied the effect of low-temperature uniaxial deformation on the formation of the luminescence of self-trapped excitons.
Journal ArticleDOI
The specifics of radiative annihilation of self-trapped excitons in a KI-Tl crystal under low-temperature deformation
K. Sh. Shunkeyev,Nurgul Zhanturina,Z. Aimaganbetova,A. A. Barmina,L. Myasnikova,Sh. Zh. Sagymbaeva,D. M. Sergeyev +6 more
TL;DR: In this article, the effect of low-temperature uniaxial deformation on the self-trapping-limited mean free path of excitons in a KI-Tl crystal was revealed from x-ray luminescence spectra.
Journal ArticleDOI
The deformation stimulated luminescence in KCl, KBr and KI crystals
K. Shunkeyev,D. M. Sergeyev,Winicjusz Drozdowski,K. Brylev,L. Myasnikova,A. Barmina,N. Zhanturina,Sh. Sagimbaeva,Z. Aimaganbetova +8 more
TL;DR: In this paper, for the study of anion excitons and radiation defects in the AHC anion sublattice at deformation, the crystals with the same sizes of cations and different sizes of anions were chosen.
References
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Status report on luminescence investigations with synchrotron radiation at HASYLAB
TL;DR: The past development and the present technical parameters of the luminescence experimental stations HIGITI, SUPERLUMI, CLULU and VISUV at HASYLAB are described in this paper.
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Problems related to p-n junctions in silicon
TL;DR: A simple model of the behavior of holes and electrons in the high reverse fields of p-n junctions has been shown to explain a large body of experimental information as discussed by the authors. But how such a simple model can work so well is somewhat of a mystery in view of the known complications of the band structure.
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Secondary excitons in alkali halide crystals
TL;DR: The luminescent methods for separation and quantitative investigation of the for-mation processes of secondary excitations have been elaborated and the energy transport to impurity centers by free tripletsecondary excitons has been revealed in KI:Na and KBr:I crystals.
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Direct excitation of Tl + impurity ions by hot photoelectrons in wide-gap crystals
TL;DR: In this article, the energy distribution curves of emitted electrons have been measured on theexcitation of RbCl thin films by 13 − 30 eV photons. And the comparative analysis of optical and photoelectriccharacteristics allowed us to reveal the effect of direct excitation of Tl
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Luminescence of free and self-trapped excitons in ionic crystals
TL;DR: In this article, the coexistence of free and self-trapped excitons, the problem of the activation barrier for selftrapping, and the peculiarities of luminescence of hot and thermalizedexcitons in various ionic crystals are discussed.