Luminescence of excitons in single-crystal garnets

Zorenko, Y.V.; Konstankevych, I.V.; Mikhailin, V.V.; Kolobanov, V.N.; Spasskii, D.A.

Авторы: Zorenko Y.V., Konstankevych I.V., Mikhailin V.V., Kolobanov V.N., Spasskii D.A.
Журнал: Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Том: 96
Номер: 3
Год издания: 2004
Издательство: Optical Society of America
Местоположение издательства: United States
Первая страница: 390
Последняя страница: 397
DOI: 10.1134/1.1690031
Аннотация: Comparative studies of the luminescence of Y3Al5O12:Ce and Lu3Al5O12:Ce single-crystal films and their volume analogues - Y3Al5O12 and Y3Al5O12:Ce single crystals, excited by synchrotron radiation with energy E = 120–150 eV, have been performed. The films were grown from melt–solution by liquid-phase epitaxy and the crystals were grown from melt. The single-crystal films and single crystals studied are characterized by different degrees of structural order, in particular, different concentrations of substitutional defects of the and types. It was ascertained that the bands at 260 and 250 nm in the intrinsic luminescence spectra of Y3Al5O12:Ce and Lu3Al5O12:Ce single-crystal films and single crystals are due to the emission of selftrapped excitons. The luminescence band with lmax = 300 nm and t = 0.36 ms, which is present in the luminescence spectrum of single crystals and absent in the spectra of single-crystal films, is due to the recombination of electrons with holes localized at centers. It is shown that an efficient energy transfer by excitons to activator ions occurs in Y3Al5O12 and Lu3Al5O12 single-crystal films doped with Ce 3+ ions.
Добавил в систему: Михайлин Виталий Васильевич

	ИСТИНА	Войти в систему Регистрация
	ИПМех РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИПМех РАН

Luminescence of excitons in single-crystal garnetsстатья

Прикрепленные файлы