Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation

Thermoluminescence (TL) of non-stoichiometric MgO‧2.5Аl₂O₃ spinel single crystals in the green emission range after X-ray and UV irradiation has been studied. The TL maximum at 420 К emitted within that spectral region at linear heating has been found to be a complex one in spectral composition an...

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Бібліографічні деталі
Дата:2006
Автори: Kobyakov, V.A., Volokitin, V.N., Shevtsova, D.N., Lytvynov, L.A.
Формат: Стаття
Мова:English
Опубліковано: НТК «Інститут монокристалів» НАН України 2006
Назва видання:Functional Materials
Онлайн доступ:https://nasplib.isofts.kiev.ua/handle/123456789/139606
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation / V.A. Kobyakov, V.N. Volokitin, D.N. Shevtsova, L.A. Lytvynov // Functional Materials. — 2006. — Т. 13, № 1. — С. 60-65. — Бібліогр.: 13 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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spelling nasplib_isofts_kiev_ua-123456789-1396062025-02-09T17:06:08Z Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation Кінетичні параметри пасток носіїв заряду в кристалах магнійалюмінієвої шпінелі після рентгенівського та УФ опромінення Kobyakov, V.A. Volokitin, V.N. Shevtsova, D.N. Lytvynov, L.A. Thermoluminescence (TL) of non-stoichiometric MgO‧2.5Аl₂O₃ spinel single crystals in the green emission range after X-ray and UV irradiation has been studied. The TL maximum at 420 К emitted within that spectral region at linear heating has been found to be a complex one in spectral composition and in temperature. Using the self-consistent heating, the temperature positions of TL maxima caused by release of charge carriers from a set of traps at various activation energies. The recombination luminescence observed has been shown to occur only according to the second order kinetics. The occupation efficiency of shallow traps of charge carriers is found to increase after UV irradiation. The activation energy values and effective frequency factors have been determined for some traps. Исследована термолюминесценция (ТЛ) монокристаллов нестехиометрической шпинели MgO‧2.5Аl₂O₃ в зеленой области свечения после УФ и рентгеновского облучения. Определено, что наблюдаемый при линейном нагреве максимум ТЛ при температуре 420 К, высвечиваемый в этой области спектра, является сложным как по спектральному составу, так и по температуре. С помощью метода самосогласованного нагрева удалось определить положения максимумов ТЛ, обусловленных высвобождением носителей заряда из набора ловушек с разной энергией активации. Показано, что наблюдаемое рекомбинационное свечение проходит только по второму порядку кинетики. Установлено, что эффективность заполнения мелких ловушек носителей заряда выше при УФ облучении. Для некоторых ловушек носителей заряда определены значения энергии активации и эффективные частотные факторы. Дослiджено термолюмiнесценцiю (ТЛ) монокристалiв нестехiометричної шпiнелi MgO‧2.5Аl₂O₃ у зеленiй областi випромiнювання пiсля УФ та рентгенiвського опромiнення. Визначено, що максимум ТЛ, який спостерiгається при лiнiйному нагрiваннi при температурi 420 К, i випромiнює у визначенiй областi спектра, є складний як за спектральним складом, так i за температурою. 3а допомогою методу самоузгодженого нагрiву вдалось визначити положення максимумiв ТЛ, якi обумовленi звiльненням носiїв заряду iз набору пасток з рiзною енергiєю активацiї. Показано, що рекомбiнацiйне випромiнювання, що спостерiгається, вiдбувається виключно за другим порядком кiнетики. Встановлено, що ефективнiсть заповнення мiлких пасток носiїв заряду вища при УФ опромiненнi. Для деяких пасток носiїв заряду визначено значення енергiї активацiї та ефективнi частотнi фактори. 2006 Article Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation / V.A. Kobyakov, V.N. Volokitin, D.N. Shevtsova, L.A. Lytvynov // Functional Materials. — 2006. — Т. 13, № 1. — С. 60-65. — Бібліогр.: 13 назв. — англ. 1027-5495 https://nasplib.isofts.kiev.ua/handle/123456789/139606 en Functional Materials application/pdf НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description Thermoluminescence (TL) of non-stoichiometric MgO‧2.5Аl₂O₃ spinel single crystals in the green emission range after X-ray and UV irradiation has been studied. The TL maximum at 420 К emitted within that spectral region at linear heating has been found to be a complex one in spectral composition and in temperature. Using the self-consistent heating, the temperature positions of TL maxima caused by release of charge carriers from a set of traps at various activation energies. The recombination luminescence observed has been shown to occur only according to the second order kinetics. The occupation efficiency of shallow traps of charge carriers is found to increase after UV irradiation. The activation energy values and effective frequency factors have been determined for some traps.
format Article
author Kobyakov, V.A.
Volokitin, V.N.
Shevtsova, D.N.
Lytvynov, L.A.
spellingShingle Kobyakov, V.A.
Volokitin, V.N.
Shevtsova, D.N.
Lytvynov, L.A.
Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
Functional Materials
author_facet Kobyakov, V.A.
Volokitin, V.N.
Shevtsova, D.N.
Lytvynov, L.A.
author_sort Kobyakov, V.A.
title Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
title_short Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
title_full Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
title_fullStr Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
title_full_unstemmed Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation
title_sort kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after x-ray and uv irradiation
publisher НТК «Інститут монокристалів» НАН України
publishDate 2006
url https://nasplib.isofts.kiev.ua/handle/123456789/139606
citation_txt Kinetic parameters of charge carrier traps in magnesium-aluminum spinel crystals after X-ray and UV irradiation / V.A. Kobyakov, V.N. Volokitin, D.N. Shevtsova, L.A. Lytvynov // Functional Materials. — 2006. — Т. 13, № 1. — С. 60-65. — Бібліогр.: 13 назв. — англ.
series Functional Materials
work_keys_str_mv AT kobyakovva kineticparametersofchargecarriertrapsinmagnesiumaluminumspinelcrystalsafterxrayanduvirradiation
AT volokitinvn kineticparametersofchargecarriertrapsinmagnesiumaluminumspinelcrystalsafterxrayanduvirradiation
AT shevtsovadn kineticparametersofchargecarriertrapsinmagnesiumaluminumspinelcrystalsafterxrayanduvirradiation
AT lytvynovla kineticparametersofchargecarriertrapsinmagnesiumaluminumspinelcrystalsafterxrayanduvirradiation
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AT volokitinvn kínetičníparametripastoknosíívzarâduvkristalahmagníjalûmíníêvoíšpínelípíslârentgenívsʹkogotaufopromínennâ
AT shevtsovadn kínetičníparametripastoknosíívzarâduvkristalahmagníjalûmíníêvoíšpínelípíslârentgenívsʹkogotaufopromínennâ
AT lytvynovla kínetičníparametripastoknosíívzarâduvkristalahmagníjalûmíníêvoíšpínelípíslârentgenívsʹkogotaufopromínennâ
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