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[期刊论文]

A promising red-emitting phosphor Li2Eu4(MoO4)7 prepared by sol–gel method

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author:

Ru, Jingjing (Ru, Jingjing.) [1] | Ying, Shaoming (Ying, Shaoming.) [2] | Zheng, Wenxu (Zheng, Wenxu.) [3] | Unfold

Indexed by:

EI

Abstract:

A series of red light-emitting phosphors Li2Y4-x(MoO4)7:xEu3+ were synthesized by a sol-gel method. These samples were characterized by DSC-TGA, XRD, PL and FE-SEM analysis. The best dosage of citric acid is four times of metal ions. The optimal sintering temperature is 900 °C. The luminescence intensity of Li2Y4-x(MoO4)7:xEu3+ are strongest when the doping concentration of Eu3+ is 4 mol. These phosphors can be excitated by near-UV light of 395 nm and blue light of 465 nm effectively, and show strong red light at 615 nm, which is corresponding to 5D0 → 7F2 transition of Eu3+ ion. The CIE chromaticity coordinates of Li2Eu4(MoO4)7 phosphor is calculated to be (0.6497, 0.3499), and its lifetime is 0.38 ms. The results show that the phosphor is a promising red component candidate for near-UV and bule LED application. © 2016

Keyword:

Europium compounds Inorganic compounds Light Lithium compounds Luminescence Metal ions Metals Phosphors Sintering Sol-gel process Sol-gels X ray diffraction

Community:

  • [ 1 ] [Ru, Jingjing]Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde; 352100, China
  • [ 2 ] [Ru, Jingjing]College of Chemistry, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 3 ] [Ying, Shaoming]Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde; 352100, China
  • [ 4 ] [Zheng, Wenxu]College of Chemistry, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 5 ] [Chen, Jianzhong]College of Chemistry, Fuzhou University, Fuzhou; Fujian; 350108, China

Reprint 's Address:

  • [chen, jianzhong]college of chemistry, fuzhou university, fuzhou; fujian; 350108, china

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Source :

Materials Research Bulletin

ISSN: 0025-5408

Year: 2016

Volume: 84

Page: 468-473

2 . 4 4 6

JCR@2016

5 . 3 0 0

JCR@2023

ESI HC Threshold:324

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

30 Days PV: 0

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