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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 19 — Sep. 13, 2010
  • pp: 20215–20221

Near infrared long-persistent phosphorescence in La3Ga5GeO14:Cr3+ phosphor

Wuzhao Yan, Feng Liu, Yi-Ying Lu, Xiao-Jun Wang, Min Yin, and Zhengwei Pan  »View Author Affiliations


Optics Express, Vol. 18, Issue 19, pp. 20215-20221 (2010)
http://dx.doi.org/10.1364/OE.18.020215


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Abstract

Near infrared (NIR; 660−1300 nm) long-persistent phosphorescence from Cr3+ ions with persistence time of more than 1 hour was realized in La3Ga5GeO14:Cr3+ phosphor (with or without co-dopants such as Li+, Zn2+, Ca2+, Mg2+ and Dy3+). The NIR phosphorescence can be effectively achieved under UV illumination (~240−360 nm) but is barely achieved by blue light (~480 nm) irradiation, even though the blue light excitation are effective to the NIR fluorescence. The NIR phosphorescence mechanisms were discussed by measuring the irradiation energy dependence of the phosphorescence intensity.

© 2010 OSA

OCIS Codes
(160.2900) Materials : Optical storage materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(160.6990) Materials : Transition-metal-doped materials
(300.6250) Spectroscopy : Spectroscopy, condensed matter
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:
Materials

History
Original Manuscript: May 18, 2010
Revised Manuscript: July 15, 2010
Manuscript Accepted: July 21, 2010
Published: September 8, 2010

Citation
Wuzhao Yan, Feng Liu, Yi-Ying Lu, Xiao-Jun Wang, Min Yin, and Zhengwei Pan, "Near infrared long-persistent phosphorescence in La3Ga5GeO14:Cr3+ phosphor," Opt. Express 18, 20215-20221 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-19-20215


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