White‐ and blue‐light‐emitting dysprosium(III) and terbium(III)‐doped gadolinium titanate phosphors. (15th September 2016)

• Record Type: Journal Article
• Authors: Antić, Ž.; Kuzman, S.; Đorđević, V.; Dramićanin, M. D.; Thundat, T.
• Is Part Of: Luminescence. Volume 32:Number 4(2017)
• Page Start: 539
• Page End: 544
• Publication Date: 2016-09-15
• Subjects: Dy3+ -- Tm3+ -- pyrochlores -- phosphor -- photoluminescence; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.3210
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: Here we report the synthesis and structural, morphological, and photoluminescence analysis of white‐ and blue‐light‐emitting Dy 3 + ‐ and Tm 3 + ‐doped Gd2 Ti2 O7 nanophosphors. Single‐phase cubic Gd2 Ti2 O7 nanopowders consist of compact, dense aggregates of nanoparticles with an average size of ~25 nm for Dy 3 + ‐doped and ~50 nm for Tm 3 + ‐doped samples. The photoluminescence results indicated that ultraviolet (UV) light excitation of the Dy 3 + ‐doped sample resulted in direct generation of white light, while a dominant yellow emission was obtained under blue‐light excitation. Intense blue light was obtained for Tm 3 + ‐doped Gd2 Ti2 O7 under UV excitation suggesting that this material could be used as a blue phosphor.