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Synthesis and Characterization of Oxygen Doped ZnTe for Powder Phosphor Application

Published online by Cambridge University Press:  03 March 2011

Z.T. Kang ,
H. Menkara ,
B.K. Wagner ,
C.J. Summers  and
V. Valdna
Z.T. Kang
Affiliation:
Phosphor Technology Center of Excellence, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
H. Menkara
Affiliation:
Phosphor Technology Center of Excellence, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
B.K. Wagner
Affiliation:
Phosphor Technology Center of Excellence, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
C.J. Summers*
Affiliation:
Phosphor Technology Center of Excellence, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
V. Valdna
Affiliation:
Tallinn Technical University, 19086 Tallinn, Estonia
*
a) Address all correspondence to this author.e-mail: [email protected]
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Abstract

The synthesis of efficient ZnTe powder phosphors is very difficult due to its high moisture sensitivity and chemical instability during processing. In this study, an efficient ZnTe:O powder phosphor for x-ray imaging application was successfully synthesized by vacuum firing ZnTe powder prepared from ZnTe bulk crystals ball-milled in an O2 atmosphere. The phosphors were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, photoluminescence, and cathodoluminescence (CL) measurements and found to exhibit a luminescent efficiency three times that of ZnTe:O prepared by ZnO doping. The ZnTe:O samples exhibited a deep red emission centered at 680 nm and a CL decay time of 1.1μs.

Keywords

FiringLuminescencePowder
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 9 , September 2005 , pp. 2510 - 2515
Copyright
Copyright © Materials Research Society 2005

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References

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