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

author：

Ru, J. (Ru, J..) ^[1] | Ying, S. (Ying, S..) ^[2] | Zheng, W. (Zheng, W..) ^[3] | Chen, J. (Chen, J..) ^[4]

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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：

Inorganic compounds; Luminescence; Phosphors; Sol-gel chemistry; X-ray diffraction

Community：

[ 1 ] [Ru, J.]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, J.]College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
[ 3 ] [Ying, S.]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, W.]College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
[ 5 ] [Chen, J.]College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China

Reprint 's Address：

[Chen, J.]College of Chemistry, Fuzhou UniversityChina

Email：

j.z.chen@fzu.edu.cn

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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

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ESI Highly Cited Papers on the List： 0 Unfold All

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