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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 2885–2887

Bi 2 + -doped strontium borates for white-light-emitting diodes

Mingying Peng and Lothar Wondraczek  »View Author Affiliations


Optics Letters, Vol. 34, Issue 19, pp. 2885-2887 (2009)
http://dx.doi.org/10.1364/OL.34.002885


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Abstract

We report on Bi 2 + -doped Sr B 4 O 7 and Sr B 6 O 10 as orange and red phosphors for white-light-emitting diodes. In both compounds, absorption due to P 1 2 2 S 1 2 2 in Bi 2 + could be observed and quantified. The emission redshift from Sr B 4 O 7 to Sr B 6 O 10 and their different phonon satellite spectra are attributed to the enhancement of phonon–electron interaction. Investigation of the reduction mechanism of Bi 3 + to Bi 2 + suggests that in oxidizing atmosphere, Bi 2 + can be stabilized on Sr 2 + sites only in such lattices that are dominated by tetrahedrally coordinated boron.

© 2009 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.4670) Materials : Optical materials

ToC Category:
Materials

History
Original Manuscript: May 22, 2009
Revised Manuscript: July 31, 2009
Manuscript Accepted: August 5, 2009
Published: September 17, 2009

Citation
Mingying Peng and Lothar Wondraczek, "Bi2+-doped strontium borates for white-light-emitting diodes," Opt. Lett. 34, 2885-2887 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-2885


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