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  • Vol. 37, Iss. 13 — Jul. 1, 2012
  • pp: 2511–2513

Intensive green emission of ZnAl2O4:Mn2+ under vacuum ultraviolet and low-voltage cathode ray excitation

Su Zhang, Hongbin Liang, Yuewei Liu, Yufeng Liu, Dejian Hou, Guobin Zhang, and Junyan Shi  »View Author Affiliations


Optics Letters, Vol. 37, Issue 13, pp. 2511-2513 (2012)
http://dx.doi.org/10.1364/OL.37.002511


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Abstract

A series of Zn1xMnxAl2O4 (x=0.0010.08) phosphors were synthesized by a traditional solid-state reaction route. Their photoluminescence under vacuum ultraviolet (VUV, energy E>50000cm1, wavelength λ<200nm) and cathodoluminescence under low-voltage electron beam excitation were evaluated. The luminescence decays were also measured. The intense green emission was observed with a peak at about 510 nm upon 172/147nm excitation. The luminescence of optimum phosphor Zn0.99Mn0.01Al2O4 (ZAM) was compared with that of commercial green phosphor Zn2SiO4:Mn2+ (ZSM). The maximum emission intensity of ZAM is larger than that of ZSM under 172/147nm and low-voltage electron beam excitation. The values of chromaticity coordinates reveal the phosphors can evidently enlarge the tricolor gamut. The results show that the ZnAl2O4:Mn2+ phosphors may be considered as candidates for Hg-free lamps, plasma flat backlights, and field emission backlights for liquid crystal displays.

© 2012 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Spectroscopy

History
Original Manuscript: April 24, 2012
Revised Manuscript: May 16, 2012
Manuscript Accepted: May 16, 2012
Published: June 20, 2012

Citation
Su Zhang, Hongbin Liang, Yuewei Liu, Yufeng Liu, Dejian Hou, Guobin Zhang, and Junyan Shi, "Intensive green emission of ZnAl2O4:Mn2+under vacuum ultraviolet and low-voltage cathode ray excitation," Opt. Lett. 37, 2511-2513 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-13-2511


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