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author:

Cui, X.-S. (Cui, X.-S..) [1] | Chen, W.-Z. (Chen, W.-Z..) [2]

Indexed by:

Scopus PKU CSCD

Abstract:

Transparent bulk glass ceramics of 4.5ZnO-5.5Al2O3-90SiO2 (ZAS) and single doped ZAS:RE3+ (RE=Eu, Tb, Ce) were synthesized by sol-gel method. X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence (PL) spectra were employed to study the influence of doping rare-earth ions concentration on the structure and luminescence properties of ZAS glass-ceramics. XRD results show that ZAS:RE3+ (RE=Eu, Tb, Ce) glass ceramics heat-treated at 900 ℃ consist of ZnAl2O4 phase with average grain size of 30 nm and amorphous SiO2.TEM results show that ZnAl2O4 were precipitated from ZAS system when heat-treated at 900 ℃, and doping ions have not changed the original structure. PL spectra indicate that ZAS:Eu3+ emits intense 611 nm red light originating from 5D0→7F2 transition of Eu3+ ions, ZAS:Tb3+ shows 541 nm green emission attributed to 5D4→7F5 transition of Tb3+ ions, and ZAS:Ce3+ gives 381 nm blue light corresponding to the 5d to 4f transition of Ce3+ ions. Furthermore, the concentration quenching phenomena are observed while the single doping mole fraction of Eu3+, Tb3+ and Ce3+ was 20%, 20% and 3%, respectively. The excellent Commission International de I'Eclairage (CIE) chromaticity coordinates of ZAS:RE3+ (RE=Eu, Tb, Ce) glass-ceramics indicate that they are good candidates for the application of white LEDs. ©, 2015, Chines Academy of Sciences. All right reserved.

Keyword:

Luminescence properties; Rare-earth ions doped; Sol-gel method; ZAS glass ceramics

Community:

  • [ 1 ] [Cui, X.-S.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Chen, W.-Z.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Chen, W.-Z.]College of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, China

Reprint 's Address:

  • [Chen, W.-Z.]College of Materials Science and Engineering, Fuzhou UniversityChina

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Source :

Chinese Journal of Luminescence

ISSN: 1000-7032

Year: 2015

Issue: 4

Volume: 36

Page: 400-407

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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