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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 16 — Aug. 15, 2008
  • pp: 1816–1818

Enhancement of phosphor efficiency via composition modification

Y. X. Pan and G. K. Liu  »View Author Affiliations


Optics Letters, Vol. 33, Issue 16, pp. 1816-1818 (2008)
http://dx.doi.org/10.1364/OL.33.001816


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Abstract

The luminescence efficiency of Mn 4 + -doped Ca Al 12 O 19 (Mn:CAO) is significantly improved by composition modification. The leading mechanism that quenches the Mn 4 + photoluminescence is the formation of Mn 4 + pairs in the lattice of Ca Al 12 O 19 (CAO) with interstitial O 2 for charge compensation. Mixing Mg 2 + ions into the CAO lattice may form Mn 4 + Mg 2 + pairs and reduce the number of Mn 4 + pairs, thus enhancing the Mn 4 + luminescence efficiency by more than three times. It is shown that the presence of Mg 2 + leads to formation of additional phases that also affect the optical properties of Mn 4 + .

© 2008 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(250.5230) Optoelectronics : Photoluminescence
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(350.3850) Other areas of optics : Materials processing

ToC Category:
Spectroscopy

History
Original Manuscript: April 8, 2008
Revised Manuscript: June 29, 2008
Manuscript Accepted: June 30, 2008
Published: August 6, 2008

Citation
Y. X. Pan and G. K. Liu, "Enhancement of phosphor efficiency via composition modification," Opt. Lett. 33, 1816-1818 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-16-1816


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