Репозиторий Университета

Год публикации: Все года 2018 2019 2020

Название	Дата публикации	Коллектив авторов	Журнал	DOI	Индекс цитирования	Ссылка на источник
Enhanced green upconversion luminescence properties of Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped strontium gadolinium silicate oxyapatite phosphor Energytransfer Greenemission Sol-gelprocess Submicronparticle Upconversionluminescence	15.08.2018	Raju G. Pavitra E. Bharat L. Rao G. Jeon T. Huh Y. Han Y.	Ceramics International		1	Ссылка © 2018 Elsevier Ltd and Techna Group S.r.l. Upconversion Sr2(Gd.98-xEr.02Ybx)8Si6O26 (SGSO:2Er3+/xYb3+) phosphor materials were synthesized using a citrate sol-gel process. X-ray diffraction patterns confirmed their hexagonal structure. Field emission scanning electron microscopy images of SGSO:2Er3+/xYb3+ phosphors depicted submicron particles. The enhanced upconversion luminescence properties of SGSO:2Er3+/xYb3+ phosphors were analysed as a function of Yb3+ ion concentration and laser power. The energy transfer induced enhanced emission of the Er3+/ Yb3+ ions co-doped SGSO phosphors was ascribed to multi-phonon relaxation. The calculated chromaticity coordinates of the SGSO:2Er3+/xYb3+ phosphors showed emissions could be tuned by changing Yb3+ ion concentration. Optimized sample exhibited the chromaticity coordinate values near to the ultra-high definition television standard green emission coordinates. Читать тезис