Bright white up-conversion emission from sol–gel derived Yb3+/Er3+/Tm3+: Y2SiO5 nanocrystalline powders. Issue 10 (December 2015)

• Record Type: Journal Article
• Authors: Erdem, Murat; Erguzel, Olgun; Ekmekci, Mete K.; Orucu, Humeyra; Cinkaya, Hatun; Genc, Seval; Mergen, Ayhan; Eryurek, Gonul; Di Bartolo, Baldassare
• Is Part Of: Ceramics international. Volume 41:Issue 10(2015)Part A
• Page Start: 12805
• Page End: 12810
• Publication Date: 2015-12
• Subjects: Upconversion -- Sol–gel -- Nanophosphors -- White light; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.06.116
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Bright white up conversion emission has been observed in sol–gel derived Yb 3+ /Er 3+ /Tm 3+ : Y2 SiO5 nanocrystalline powders when excited with the 950 nm emission of a laser diode. Measurements of the sample emission intensity dependence on the pumping power were performed to explain the up conversion mechanism. The CIE chromaticity coordinates ( x, y ) for white emission in X2–Y2 SiO5 nanocrystalline form were found to be (0.334, 0.332) under 950 nm laser diode excitation.