Characterization of Traveling Heater Method (THM) Grown Cd sub(0.9)Zn sub(0.1)Te Crystals

High-performance semi-insulating single crystals of n-type (CZT) were grown using the traveling heater method (THM). X-ray and -ray detector configurations fabricated from this material have a room-temperature mean energy resolution of 4.3% FWHM for a source (122 keV) and uniform pixel-to-pixel resp...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2007-01, Vol.54 (4)
Main Authors: Chen, H, Awadalla, SA, Mackenzie, J, Redden, R, Bindley, G, Bolotnikov, A E, Camarda, G S, Carini, G, James, R B
Format: Article
Language:English
Subjects:
CZT
Detectors
Energy resolution
Homeland security
Infrared
Microscopy
Traveling Heater Method
X-ray topography
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Summary:High-performance semi-insulating single crystals of n-type (CZT) were grown using the traveling heater method (THM). X-ray and -ray detector configurations fabricated from this material have a room-temperature mean energy resolution of 4.3% FWHM for a source (122 keV) and uniform pixel-to-pixel response on monolithic 20205 pixellated detectors. Energy resolution of 1% FWHM for (662keV) has been measured on virtual Frisch-grid 4411 devices useful for homeland security applications. Additional characterization techniques including mobility-lifetime measurements, infrared microscopy, X-ray topography, and OPTICAL Deep Level Transient Spectroscopy (ODLTS) have demonstrated the superior quality of this THM CZT.
ISSN:0018-9499
DOI:10.1109/TNS.2007.902369