zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-2163Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESФотолюминесцентные и термолюминесцентные свойства активированного ионами Dy3+ перовскита LaAlO3Photoluminescence and Thermoluminescence Studies of LaAlO3 Perovskite Doped with Dy3+KunduR. S.KunduR. S.

Бхилай

Bhilai

ShrivastavaR.ShrivastavaR.

Бхилай

Bhilai

ravishrivastava95@gmail.comПрофессиональный университет имени Шри ШанкарачарьиDepartment of Physics, Shri Shankaracharya Professional University2026300320269322866Copyright © Kundu R.S., Shrivastava R., 20262026Kundu R.S., Shrivastava R.Kundu R.S., Shrivastava R.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/2163

Методом твердофазной реакции получен LaAlO3, легированный различными концентрациями ионов Dy3+. Оптимальное излучение фотолюминесценции (ФЛ) наблюдалось при концентрации легирующей примеси 3.0 мол.%. Критическое расстояние между активаторами для оптимального случая ФЛ 3.330 Å. Наблюдались пики ФЛ с центрами 478, 494 нм и 590, 615 нм, которые отнесены к переходам 4F9/2→6H15/2 и 4F9/2→6H13/2 ионов Dy3+ соответственно. Формы кривой термолюминесценции для различных случаев указывают на существование кинетики второго порядка с более глубокими ловушками и энергиями активации в диапазоне 0.44—0.46 эВ.

The preparation of LaAlO3 doped with various concentrations of Dy3+ via a solid-state reaction technique is reported. Optimum photoluminescence (PL) emission was observed for 3.0 mol.% dopant. The critical distance between the activators for the optimum PL case was 3.330 Å. PL emission peaks centered at 478 and 494 nm and at 590 and 615 nm were observed and attributed to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+, respectively. The thermoluminescence glow curve shape factors for various cases indicated the existence of second-order kinetics with deeper traps with activation energies in the range of 0.44–0.46 eV.

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