Luminescence of Er/Yb and Tm/Yb doped FAp nanoparticles and ceramics

Autor:	Donāts Millers, Dzidra Jankoviča, Larisa Grigorjeva, Krišjānis Šmits
Rok vydání:	2015
Předmět:	Materials science Annealing (metallurgy) Doping Fluorapatite FAp Mineralogy Nanoparticle HAp Hydroxiapatite fluorapatite Ion luminiscence visual_art visual_art.visual_art_medium Ceramic Fourier transform infrared spectroscopy Luminescence Nuclear chemistry
Zdroj:	IOP Conference Series: Materials Science and Engineering
ISSN:	1757-899X
DOI:	10.1088/1757-899x/77/1/012036
Popis:	The nanoparticles of hydroxiapatite and fluorapatite doped with Er/Yb and Tm/Yb were synthesized and characterized by FTIR, XRD, SEM and TEM methods. The results of up-conversion luminescence studies were presented for the samples as prepared, annealed at 500°C and at 900-1000 °C. At annealing above 800°C the ceramic state was formed. It is shown that fluorapatite host is more appropriate than hydroxiapatite host for rare ions luminescence and up-conversion processes. The post preparing annealing of nanarticles significantly enhanced the luminescence intensity. The Tm/Yb doped fluorapatite shows intense up-conversion luminescence in 790-800 nm spectral region and is potentially useful for biomedical applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50bd0a9c77a20c339771536297d79185 https://doi.org/10.1088/1757-899x/77/1/012036 Zobrazit plný text záznamu