Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1016/j.jallcom.2010.02.089

Ключевые слова: Insulators, Crystal growth, Luminescence, Co-doped, Cooperative upconversion, Crystal-field-split, Excitation spectrum, Ion state, Power dependence, Pump power, Spectral components, Up-conversion, Up-conversion luminescence, Ytterbium doping, Yttrium aluminum borate, Crystallization, Doping (additives), Pumps, Thulium, Ytterbium, Yttrium, Single crystals

Аннотация: Single crystals of yttrium aluminum borate co-doped with 5% thulium and 10-20% ytterbium demonstrate upconversion luminescence both in the red and in the blue. All spectral components of the upconversion luminescence originate from (1)G(4) thulium ion state. A cooperative upconversion mechanism with a nearly quadratic slope of the power dependence dominates in the studied pump power density range. The excitation spectra are asymmetric due to different contributions from the crystal field split components of ytterbium F-7(7/2)-F-7(5/2) transition. Optimal ytterbium doping for efficient upconversion is below 20%. (C) 2010 Elsevier B.V. All rights reserved.

Журнал: JOURNAL OF ALLOYS AND COMPOUNDS

Выпуск журнала: Vol. 496, Is. 1-2

Номера страниц: 18-21

ISSN журнала: 09258388

Место издания: LAUSANNE

Издатель: ELSEVIER SCIENCE SA

• Aleksandrovsky A.S. (Siberian Federal University)
• Gudim I.A. (L.V. Kirensky Institute of Physics)
• Krylov A.S. (L.V. Kirensky Institute of Physics)
• Malakhovskii A.V. (L.V. Kirensky Institute of Physics)
• Temerov V.L. (L.V. Kirensky Institute of Physics)

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