zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1283Research Article******Изучение фотолюминесцентного голубовато-белого излучения люминофора Li2CaSiO4, активированного Dy3+Photoluminescence Studies of Bluish-White Emission from Dy3+-Activated Li2CaSiO4 PhosphorParimalaM. P. D.ParimalaM. P. D.

Мачилипатнам

Department of Physics

Machilipatnam

RaoM. С.RaoM. C.

Мачилипатнам; , Виджаявада

Department of Physics

Machilipatnam; Vijayawada

raomc72@gmail.comDubeyV.DubeyVikas

Райпур, Нью-Райпур, Чхаттисгарх

Department of Physics

New Raipur, Chhattisgarh

MurthyK. V. R.MurthyK. V. R.

Вадодара

Department of Applied Physics, Faculty of Engineering and Technology

Vadodara

Университет КришныKrishna UniversityУниверситет Кришны; Колледж Андхра ЛойолаKrishna University; Andhra Loyola CollegeБхилайский технологический институтBhilai Institute of Technology RaipurУниверситет БародыM. S. University of Baroda2023250320239023515Copyright © Parimala M.P., Rao M.С., Dubey V., Murthy K.V., 20232023Parimala M.P., Rao M.С., Dubey V., Murthy K.V.Parimala M.P., Rao M.C., Dubey V., Murthy K.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/1283

Люминофоры Li2CaSiO4, легированные Dy3+, изготовлены методом высокотемпературной твердотельной реакции. Структура и морфология образцов исследованы методами рентгеновской дифракции и сканирующей электронной микроскопии. Представлен фотолюминесцентный анализ образцов с различными концентрациями легирующего иона при возбуждении на разных длинах волн. При легировании Dy3+ Li2CaSiO4 испускает интенсивные полосы на длинах волн 485 и 576 нм (λвозб =353 нм). Показано, что изготовленный люминофор может быть полезен в белых светодиодах в качестве голубоватого компонента. Изучены соответствующие переходы легирующего иона и эффект концентрационного тушения. Координаты цветности CIE 1931 (x, y) (x = 0.24 и y = 0.31) показывают положение спектральной области, рассчитанное по спектрам фотолюминесценции.

Dy3+-doped Li2CaSiO4 phosphors were prepared by high temperature solid-state reaction. Structural studies were carried out using X-ray diffraction technique. Scanning electron microscopy was used to get information about the morphology of the prepared samples. Also, photoluminescence analysis of the phosphor samples for different concentrations of the doping ion with variable excitations was presented. When doped with Dy3+, Li2CaSiO4 emits intense emission bands at 485 and 576 nm (excited at 353 nm). Our study shows that the as-prepared phosphor may be useful in white light-emitting diodes as a bluish component. The corresponding transitions of the doping ion and concentration quenching effect were studied in detail. The CIE 1931 (x, y) chromaticity coordinates (x = 0.24 and y = 0.31) show the distribution of the spectral region calculated from photoluminescence emission spectra.

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