Mechanisms for Enhancing Luminescence Yield in KBr Crystals under the Influence of Low-Temperature Uniaxial Elastic Deformation

被引：0

作者：

Shunkeyev, Kuanyshbek ^{[1
]}

Sagimbayeva, Shynar ^{[1
]}

Ubaev, Zhiger ^{[1
]}

Kenzhebayeva, Adelya ^{[1
]}

机构：

[1] K Zhubanov Aktobe Reg Univ, Sci Ctr Radiat Phys Mat, Aktobe 030000, Kazakhstan

来源：

CRYSTALS | 2024年 / 14卷 / 08期

关键词：

ionic crystal; high-purity KBr crystal; self-trapped exciton; uniaxial deformation; low temperature; X-ray luminescence; tunnel luminescence; thermally stimulated luminescence; SELF-TRAPPED EXCITONS; ALKALI-HALIDE CRYSTALS; SINGLE-CRYSTALS; TUNNELING RECOMBINATION; SURFACE PROCESSES; HOLES; NANOTUBES; EMISSION; DEFECTS;

D O I：

10.3390/cryst14080698

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

This study investigates the radiative relaxation of electronic excitations through luminescence spectroscopy techniques applied to high-purity KBr crystals subjected to low-temperature (85 K) uniaxial deformation along the <100> and <110> crystallographic directions. Results demonstrate that the most significant enhancement in the intensity of sigma-(4.42 eV) and pi-(2.3 eV) luminescence from self-trapped excitons in KBr crystals occurs with elastic deformation along the <110> direction, aligning with the axis of the hole component of the anion self-trapped exciton. Deformation-induced changes in X-ray, tunneling, and thermally stimulated luminescence spectra reveal a new band, denoted as E-x, peaking at approximately 3.58 eV, attributed to tunneling charge exchange between the F'- and V-K-centers in their ground state.

引用

页数：13

共 50 条

[1] LOW-TEMPERATURE LUMINESCENCE OF OH AND OD IN KBr CRYSTALS
Patterson, D. A.
Kabler, M. N.
SOLID STATE COMMUNICATIONS, 1965, 3 (04) : 75 - 80
[2] The specificity intrinsic luminescence of a CsI crystal under the influence of low-temperature elastic deformation
Shunkeyev, K.
Maratova, A.
Myasnikova, L.
Sagimbayeva, Sh
Zhanturina, N.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2021, 509 : 1 - 6
[3] Exciton-Like luminescence in a KBr crystal exposed to uniaxial elastic deformation
Shunkeyev, K.
Lushchik, A.
Sagimbayeva, Sh.
Ubaev, Z.
Tilep, A.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2024, 547
[4] Effect of Low-Temperature Deformation on the Ex Luminescence of KI Single Crystals
Shunkeyev, K.
Maratova, A.
Lushchik, A.
Myasnikova, L.
INTEGRATED FERROELECTRICS, 2021, 220 (01) : 140 - 146
[5] LOW-TEMPERATURE DEFORMATION MECHANISMS IN LIF SINGLE-CRYSTALS
FOTEDAR, HL
STOEBE, TG
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1975, 31 (02): : 399 - 408
[6] LOW-TEMPERATURE EXCITON MIGRATION IN KBR-CRYSTALS
VASILCHENKO, EA
LUSHCHIK, NE
SOOVIK, KA
IZVESTIYA AKADEMII NAUK SSSR SERIYA FIZICHESKAYA, 1974, 38 (06): : 1267 - 1270
[7] LOW-TEMPERATURE THERMOLUMINESCENCE IN KBR-Y CRYSTALS
REDDY, CG
REDDY, KN
REDDY, MM
CRYSTAL RESEARCH AND TECHNOLOGY, 1991, 26 (02) : K42 - K45
[8] The thermostimulated luminescence of radiation defects in KCl, KBr and KI crystals at elastic and plastic deformation
Shunkeyev, K.
Myasnikova, L.
Barmina, A.
Zhanturina, N.
Sagimbaeva, Sh
Aimaganbetova, Z.
Sergeyev, D.
5TH INTERNATIONAL CONGRESS ON ENERGY FLUXES AND RADIATION EFFECTS 2016, 2017, 830
[9] Efficiency of H center stabilization in alkali halide crystals at low-temperature uniaxial deformation
Zhanturina, N.
Myasnikova, L.
Shunkeyev, K.
Maratova, A.
Popov, A.I.
Fizika Nizkikh Temperatur, 2020, 46 (12): : 1371 - 1376
[10] Efficiency of H center stabilization in alkali halide crystals at low-temperature uniaxial deformation
Zhanturina, N.
Myasnikova, L.
Shunkeyev, K.
Maratova, A.
Popov, A. I.
LOW TEMPERATURE PHYSICS, 2020, 46 (12) : 1165 - 1169

← 1 2 3 4 5 →