Crystallization and up-conversion luminescence properties of Er3+/Yb3+-doped NaYF4-based nano-glass-ceramics. Issue 6 (June 2015)

• Record Type: Journal Article
• Authors: de Pablos-Martín, A.; Méndez-Ramos, J.; del-Castillo, J.; Durán, A.; Rodríguez, V.D.; Pascual, M.J.
• Is Part Of: Journal of the European Ceramic Society. Volume 35:Issue 6(2015:Jun.)
• Page Start: 1831
• Page End: 1840
• Publication Date: 2015-06
• Subjects: Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2014.12.034
• Languages: English
• ISSNs: 0955-2219

Abstract

<abstract abstract-type="author" id="abs0005"> <title id="sect0005">Abstract</title> <sec> <p id="spar0005">A crystallization study of Er³⁺/Yb³⁺-doped NaYF₄-based nano-glass-ceramics and their optical characterisation is presented. NaYF₄ nano-crystals were precipitated from heat treatments close to the glass transition temperature. The crystallization process occurs from a constant number of nuclei. The increase of dopant ions has a nucleating effect. Crystal growth is limited with the length of the heat treatment, keeping the crystal size to the nanometric scale. Er³⁺-single doped samples show a predominant green up-conversion emission under near infrared excitation at 980 nm, while a predominant red emission is observed in the Er³⁺/Yb³⁺ co-doped samples. The efficiency of the up-conversion emission is higher in the glass-ceramics than in the parent glasses.</p> </sec> </abstract>