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Improvement of CdMnTe Detector Performance by MnTe Purification

Published online by Cambridge University Press:  11 August 2011

K. H. Kim ,
A. E. Bolotnikov ,
G. S. Camarda ,
R. Tappero ,
A. Hossain ,
Y. Cui ,
G. Yang ,
R. Gul  and
R. B. James
K. H. Kim
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
A. E. Bolotnikov
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
G. S. Camarda
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
R. Tappero
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
A. Hossain
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
Y. Cui
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
G. Yang
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
R. Gul
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
R. B. James
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973, USA
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Abstract

Residual impurities in manganese (Mn) are a big obstacle to obtaining high- performance CdMnTe (CMT) X-ray and gamma-ray detectors. Generally, the zone-refining method is an effective way to improve the material’s purity. In this work, we purified the MnTe compounds combining the zone-refining method with molten Te that has a very high solubility. We confirmed the improved purity of the material by glow-discharge mass spectrometry (GDMS). We also found that CMT crystals from a multiple refined MnTe source, grown by the vertical Bridgman method, yielded better performing detectors.

Keywords

II-VIcrystal growthpurification
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1341: Symposium U – Nuclear Radiation Detection Materials , 2011 , mrss11-1341-u02-04
Copyright
Copyright © Materials Research Society 2011

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References

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