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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| Мова: | English |
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НТК «Інститут монокристалів» НАН України
2006
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| 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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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 |
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| first_indexed |
2025-11-28T09:40:20Z |
| last_indexed |
2025-11-28T09:40:20Z |
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1850026593427128320 |
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