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Title: Material and detector properties of cadmium manganese telluride (Cd 1-xMn xTe) crystals grown by the modified floating-zone method

We demonstrated the material- and radiation-detection properties of cadmium manganese telluride (Cd 1-xMn xTe; x=0.06), a wide-band-gap semiconductor crystal grown by the modified floating-zone method. We investigated the presence of various bulk defects, such as Te inclusions, twins, and dislocations of several as-grown indium-doped Cd 1-xMn xTe crystals using different techniques, viz., IR transmission microscopy, and chemical etching. We then fabricated four planar detectors from selected CdMnTe crystals, characterized their electrical properties, and tested their performance as room-temperature X- and gamma-ray detectors. Thus, our experimental results show that CMT crystals grown by the modified floating zone method apparently are free from Te inclusions. However, we still need to optimize our growth parameters to attain high-resistivity, large-volume single-crystal CdMnTe.
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  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0168-9002; NN2001000
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 784; Journal Issue: C; Conference: Symposium on Radiation Measurements and Applications 2014 (SORMA XV), 9-12 June 2014; Journal ID: ISSN 0168-9002
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
Country of Publication:
United States
36 MATERIALS SCIENCE; CdMnTe; Te inclusions; dislocations; IR transmission; spectral response; mobility-lifetime product
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1246249