Investigation of Cadmium Manganese Telluride Crystals for Room-Temperature Radiation Detection

G. Yang, A. E. Bolotnikov, L. Li, G. S. Camarda, Y. Cui, A. Hossain, K. Kim, V. Carcelen, R. Gul, R. B. James

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Cadmium manganese telluride (CMT) has high potential as a material for room-temperature nuclear-radiation detectors. We investigated indium-doped CMT crystals taken from the stable growth region of the ingot and compared its characteristics with that from the last-to-freeze region. We employed different techniques, including synchrotron white-beam x-ray topography (SWBXT), current-voltage (I-V) measurement, and low-temperature photoluminescence spectra, and we also assessed their responses as detectors of radiation exposure. The crystal from the stable growth region proved to be superior to that from the last-to-freeze region; it is a single-grain crystal, free of twins, and displayed a resistivity higher by one order of magnitude. The segregation of indium dopant in the ingot might be responsible for its better resistivity. Furthermore, we recorded a good response in the detector fabricated from the crystal taken from the stable growth region; its (μτ) e value was 6 × 10 -3 cm 2/V, which is acceptable for thin detectors, including their application in medicine.

Original languageEnglish
Pages (from-to)1053-1057
Number of pages5
JournalJournal of Electronic Materials
Issue number7
Publication statusPublished - 2010 Jul
Externally publishedYes


  • CMT
  • Detector response
  • Photoluminescence spectra
  • Synchrotron white-beam x-ray topography
  • Twins

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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