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Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium

Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium

The optical and luminescence characteristics of YAG:Ce crystals grown first using the gas phase horizontal directed crystallization in reducing gas media developed by the authors have been studied. A correlation has been found between the cerium content and intensity of the absorption bands peaked a...

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Main Authors: Nizhankovsky, S.V., Dan`ko, A.Ya., Puzikov, V.M., Savvin, Yu.N., Trushkovsky, A.G., Krivonogov, S.I.
Format: Article
Language:English
Published: НТК «Інститут монокристалів» НАН України 2008
Series:Functional Materials
Subjects:
Technology
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/136544
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spelling irk-123456789-1365442018-06-17T03:12:02Z Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium Nizhankovsky, S.V. Dan`ko, A.Ya. Puzikov, V.M. Savvin, Yu.N. Trushkovsky, A.G. Krivonogov, S.I. Technology The optical and luminescence characteristics of YAG:Ce crystals grown first using the gas phase horizontal directed crystallization in reducing gas media developed by the authors have been studied. A correlation has been found between the cerium content and intensity of the absorption bands peaked at 235, 270 nm and in the 250-300 nm range. A model is proposed to describe the optical absorption features of YAG:Ce crystals grown in reducing conditions. According to the model, in the presence of cerium ions, the conversion of F, F⁺ centers occurs. The 1 uminescence spectra are characterized, besides of a wide (530-540 nm) Ce³⁺ ion band, by a 400 nm band which is due to F centers. Досліджено оптичні та люмінесцентні характеристики кристалів YAG:Ce, вперше одержаних з застосуванням розроблених авторами газових технологій горизонтальної напрямної кристалізації у відновлювальних середовищах. Встановлено кореляцію вмісту церію у кристалах та інтенсивності смуг поглинання при 235, 370 нм та в області 250-300 нм. Запропоновано модель, яка описує особливості оптичного поглинання кристалів YAG:Ce, що вирощені у відновлювальних умовах. Згідно з цією моделлю, у присутності іонів церію відбувається конверсія F, F⁺-центрів. Спектри люмінесценції характеризуються, окрім широкої (530-540 нм) смуги іонів Се³⁺, лінією 400 нм, зумовленою F-центрами. Исследованы оптические и люминесцентные характеристики кристаллов YAG:Ce, впервые полученных с использованием разработанных авторами газовых технологий горизонтальной направленной кристаллизации в восстановительных средах. Установлена корреляция содержания церия в кристаллах и интенсивности полос поглощения при 235, 370 нм и в области 250-300 нм. Предложена модель, описывающая особенности оптического поглощения кристаллов YAG:Ce, выращенных в восстановительных условиях. Согласно этой модели, в присутствии ионов церия происходит конверсия F, F⁺-центров. Спектры люминесценции характеризуются, кроме широкой полосы (530- 540 нм) ионов Се³⁺, линией 400 нм, за которую ответственны F-центры. 2008 Article Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium // S.V. Nizhankovsky, A.Ya. Dan`ko, V.M. Puzikov, Yu.N. Savvin, A.G. Trushkovsky, S.I. Krivonogov // Functional Materials. — 2008. — Т. 15, № 4. — С. 546-549. — Бібліогр.: 10 назв. — англ. 1027-5495 http://dspace.nbuv.gov.ua/handle/123456789/136544 en Functional Materials НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Technology
Technology
spellingShingle Technology
Technology
Nizhankovsky, S.V.
Dan`ko, A.Ya.
Puzikov, V.M.
Savvin, Yu.N.
Trushkovsky, A.G.
Krivonogov, S.I.
Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
Functional Materials
description The optical and luminescence characteristics of YAG:Ce crystals grown first using the gas phase horizontal directed crystallization in reducing gas media developed by the authors have been studied. A correlation has been found between the cerium content and intensity of the absorption bands peaked at 235, 270 nm and in the 250-300 nm range. A model is proposed to describe the optical absorption features of YAG:Ce crystals grown in reducing conditions. According to the model, in the presence of cerium ions, the conversion of F, F⁺ centers occurs. The 1 uminescence spectra are characterized, besides of a wide (530-540 nm) Ce³⁺ ion band, by a 400 nm band which is due to F centers.
format Article
author Nizhankovsky, S.V.
Dan`ko, A.Ya.
Puzikov, V.M.
Savvin, Yu.N.
Trushkovsky, A.G.
Krivonogov, S.I.
author_facet Nizhankovsky, S.V.
Dan`ko, A.Ya.
Puzikov, V.M.
Savvin, Yu.N.
Trushkovsky, A.G.
Krivonogov, S.I.
author_sort Nizhankovsky, S.V.
title Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
title_short Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
title_full Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
title_fullStr Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
title_full_unstemmed Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium
title_sort optical and luminescence characteristics of yag:ce crystals grown by horizontal directed crystallization in reducing gas medium
publisher НТК «Інститут монокристалів» НАН України
publishDate 2008
topic_facet Technology
url http://dspace.nbuv.gov.ua/handle/123456789/136544
citation_txt Optical and luminescence characteristics of YAG:Ce crystals grown by horizontal directed crystallization in reducing gas medium // S.V. Nizhankovsky, A.Ya. Dan`ko, V.M. Puzikov, Yu.N. Savvin, A.G. Trushkovsky, S.I. Krivonogov // Functional Materials. — 2008. — Т. 15, № 4. — С. 546-549. — Бібліогр.: 10 назв. — англ.
series Functional Materials
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first_indexed 2023-10-18T21:13:55Z
last_indexed 2023-10-18T21:13:55Z
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