A novel yellow phosphor for white light emitting diodes

This paper reports that a novel yellow phosphor, LiSrBO3：Eu2＋, was synthesized by the solid-state reaction. Thc excitation and emission spectra indicate that this phosphor can be effectively excited by ultraviolet （360 and 400 nm） and blue （425 and 460 nm） light, and exhibits a satisfactory yellow p...

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Bibliographic Details
Published inChinese physics B Vol. 19; no. 1; pp. 515 - 519
Main Authors Zhi-Jun, Wang, Pan-Lai, Li, Zhi-Ping, Yang, Qing-Lin, Guo, Xu, Li
Format Journal Article
LanguageEnglish
Published IOP Publishing 2010
Subjects
Chips
Chromaticity
Diodes
Emission analysis
Emission spectra
Emittance
Excitation
Excitation spectra
Indium gallium nitrides
Phosphors
Ultraviolet
White light
偶极相互作用
发光二极管灯
固相反应合成
摩尔浓度
白色发光二极管
黄色荧光
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Summary:This paper reports that a novel yellow phosphor, LiSrBO3：Eu2＋, was synthesized by the solid-state reaction. Thc excitation and emission spectra indicate that this phosphor can be effectively excited by ultraviolet （360 and 400 nm） and blue （425 and 460 nm） light, and exhibits a satisfactory yellow performance （565 nm）. The role of concentration of Eu2＋ on the emission intensity in LiSrBO3 is studied, and it is found that the critical concentration is 3 mol%, and the concentration self-quenching mechanism is the dipole-dipole interaction according to the Dexter theory. White light emitting diodes were generated by using an InGaN chip （460 nm or 400 nm） with LiSrBO3：Eu2＋ phosphor, the CIE chromaticity is （x = 0.341, y =0.321） and （x = 0.324, y = 0.318）, respectively. Therefore, LiSrBOa：Eu^2＋ is a promising yellow phosphor for white light emitting diodes.
Bibliography:luminescence, white light emitting diodes, LiSrBO3：Eu^2
11-5639/O4
TQ126.317
TN312.8
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SourceType-Scholarly Journals-1
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/1/017801