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author:

Ru, Jingjing (Ru, Jingjing.) [1] | Xie, Hongfang (Xie, Hongfang.) [2] | Chen, Feng (Chen, Feng.) [3] | Guo, Feiyun (Guo, Feiyun.) [4] (Scholars:郭飞云)

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Abstract:

A series of novel red light-emitting phosphors Li2Y4-xEux (MoO4)7 were synthesized by a solid-state reaction. The optimal synthesis of the phosphors via sintering occurred at 850°C for 4 h. The result by X-ray diffraction indicates that the sample is a pure phase of Li2Y4(MoO4)7 crystal structure with the tetragonal crystal system. The photoluminescence spectra exhibit that the sample can be excited effectively by a near-ultraviolet light of 395 nm and a visible light of 465 nm. The main emission peaks located at 615 nm, corresponding to 5D0→7F2 transition of Eu3+, and they could be used for a white light emitting diode (LED) with the color performance. The relative intensity of the sample Li2Y1.2Eu2.8 (MoO4)7 reached a maximum when the doped-Eu3+ quantity x was 2.8.

Keyword:

Crystal structure Light Light emitting diodes Phosphors Photoluminescence Sintering Solid state reactions Ternary alloys

Community:

  • [ 1 ] [Ru, Jingjing]Department of Chemistry, Ningde Normal University, Ningde 352100, Fujian, China
  • [ 2 ] [Xie, Hongfang]Department of Chemistry, Ningde Normal University, Ningde 352100, Fujian, China
  • [ 3 ] [Chen, Feng]Department of Chemistry, Ningde Normal University, Ningde 352100, Fujian, China
  • [ 4 ] [Guo, Feiyun]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

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Source :

Journal of the Chinese Ceramic Society

ISSN: 0454-5648

CN: 11-2310/TQ

Year: 2012

Issue: 3

Volume: 40

Page: 464-468

Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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