| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Luminescent Characteristics of LiSrBO3:Eu3+ Phosphor for White Light Emitting Diode |
| LI Pan-Lai, WANG Zhi-Jun, YANG Zhi-Ping, GUO Qing-Lin |
| College of Physics Science & Technology, Hebei University, Baoding 071002 |
|
| Cite this article: |
|
LI Pan-Lai, WANG Zhi-Jun, YANG Zhi-Ping et al 2009 Chin. Phys. Lett. 26 047801 |
|
|
|
|
Abstract LiSrBO3:Eu3+ phosphor is synthesized by a high solid-state reaction method, and its luminescent characteristics are investigated. The emission and excitation spectra of LiSrBO3:Eu3+ phosphors exhibit that the phosphors can be effectively excited by near ultraviolet (401nm) and blue (471nm) light, and emit 615nm red light. The effect of Eu3+ concentration on the emission spectrum of LiSrBO3:Eu3+ phosphor is studied; the results show that the emission intensity increases with increasing Eu3+ concentration, and then decreases because of concentration quenching. It reaches the maximum at 3mol%, and the concentration self-quenching mechanism is the dipole-dipole interaction according to the Dexter theory. Under the conditions of charge compensation Li+, Na+ or K+ incorporated in LiSrBO3, the luminescent intensities of LiSrBO3:Eu3+ phosphor are enhanced.
|
| Keywords:
78.55.-m
33.50.Dq
33.20.Kf
|
|
|
Received: 09 September 2008
Published: 25 March 2009
|
|
| PACS: |
78.55.-m
|
(Photoluminescence, properties and materials)
|
| |
33.50.Dq
|
(Fluorescence and phosphorescence spectra)
|
| |
33.20.Kf
|
(Visible spectra)
|
|
|
|
|
|
[1] Kim J S et al 2004 Appl. Phys. Lett. 84 2931
[2] Lakshminarasimhan N and Varadaraju U V 2005 J.Electrochemical Soc. 152 H152
[3] Li P L et al 2008 Chin. Sci. Bull. 53 974
[4] Nakamura S and Fasol G 1997 The Blue Laser Diode(Berlin: Springer) p 1
[5] Li P L et al 2007 Chin. Phys. Lett. 24 2977
[6] Hu Y S et al 2005 J. Alloys Comp. 390 226
[7] Zhang X M, Liang L F, Zhang J H and Su Q 2005 Mater.Lett. 59 749
[8] Li P L et al 2008 J. Rare Earths 26 44
[9] Cheng W D, Zhang H, Lin Q S, Zheng F K and Chen J T 2001 Chem. Mater. 13 1841
[10] Dexter D L 1954 J. Chem. Phys. 22 1063
[11] Yu X B, Xu X L, Zhou C L, Tang J F, Peng X D and Yang S P2006 Mater. Res. Bull. 41 1578
[12] Tian L H and Mho S I 2003 Solid State Commun. 125 647 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
