Luminescence Properties of Barium Thio- and Selenogallates Doped with Eu, Ce, and Eu+Ce

Autor:	G. P. Yablonskii, E. V. Lutsenko, O. B. Tagiev, Vitaly Z. Zubialevich, A. M. Pashaev, Bahadir G. Tagiev, Said A. Abushov
Rok vydání:	2011
Předmět:	Photoluminescence Materials science Doping General Engineering Analytical chemistry General Physics and Astronomy chemistry.chemical_element Thio Mineralogy Barium Atmospheric temperature range chemistry Thermal stability Europium Luminescence
Zdroj:	Japanese Journal of Applied Physics. 50:05FG02
ISSN:	1347-4065 0021-4922
Popis:	Photoluminescence properties of barium thio- and selenogallates doped with Eu2+, Ce3+ and co-doped with Eu2+ and Ce3+ were studied in a temperature range of 10–300 K and an optical excitation intensity interval of 3×10-4–1.25×106 W/cm2. Barium thiogallates doped with europium and co-doped by both rare-earth elements show a high thermal stability of the luminescence characteristics and significantly exceed the selenogallate analogues in respect of photoluminescence efficiency. Both thio- and selenogallates activated with the rare-earth elements demonstrate a considerable PL efficiency droop only at high excitation levels exceeding 20 and 10 kW/cm2, respectively. Possible reasons of the droop mechanisms are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::546eb6d22409897240ad0b963a457095 https://doi.org/10.1143/jjap.50.05fg02 Zobrazit plný text záznamu