zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1675Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESЛюминесценция активированных ионами Tb3+ и Gd3+ боратов Sr3Y(BO3)3Luminescence of Sr3Y(BO3)3 Activated with Tb3+ and Gd3+SharmaK.SharmaK.

Khushbu Sharma

Нагпур

Khushbu Sharma

Nagpur

khushbusharma1409@gmail.comNafdeyR.NafdeyR.

Renuka Nafdey

Нагпур

Renuka Nafdey

Nagpur

MoharilS. V.MoharilS. V.

Нагпур

Nagpur

Технологический институт ДжулелалаJhulelal Institute of TechnologyКолледж инженерии и менеджмента Шри РамдеобабаShri Ramdeobaba College of Engineering and Management202423102024915757757Copyright © Sharma K., Nafdey R., Moharil S.V., 20242024Sharma K., Nafdey R., Moharil S.V.Sharma K., Nafdey R., Moharil S.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1675

   Описан синтез и люминесцентные свойства бората Sr3Y(BO3)3 семейства STACK. Трехвалентные активаторы Tb3+ и Gd3+ занимают сайты иттрия (Y). Благодаря фиксированным, хорошо разделенным позициям (расстояние Y-Y 7.396 Å) можно разместить большую концентрацию Gd3+, до 50 % по отношению к иттрию, не вызывая концентрационного тушения. В случае Gd3+ при f–f-переходах возникают как линии возбуждения, так и эмиссионные линии. Фотолюминесценция наблюдалась в УФ-области. В случае Tb3+ наблюдалось концентрационное тушение > 2 %. Выраженное возбуждение Tb3+ имеет форму полосы, возникающей при переходе типа f–d, тогда как излучение происходит при переходах f–f. Время жизни излучения составляет порядка миллисекунд, обычно это запрещенные f–f-переходы.

   STACK Family borates are promising compounds for optical applications. Synthesis and luminescence of Sr3Y(BO3)3 borate belonging to the STACK family is described. Trivalent activators Tb3+ and Gd3+ occupy Yttrium sites. Owing to fixed, well-separated positions (Y-Y distance 7.396 Å), a large concentration of Gd3+, as much as 50 % relative to Y, could be accommodated without causing concentration quenching. In the case of Gd3+, both excitation and emission lines arise in f–f transitions. Photoluminescence emission is obtained in UV regions. In the case of Tb3+, concentration quenching was observed above 2 %. Prominent excitation of Tb3+ is in the form of a band arising in f–d type transition, while emission comes from f–f transitions. Emission lifetimes are of the order of milliseconds, typically forbidden f–f transitions.

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The authors declare that there are no conflicts of interest present.