期刊
JOURNAL OF CRYSTAL GROWTH
卷 355, 期 1, 页码 33-37出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2012.06.041
关键词
Mobility-lifetime products; Resistivity; Growth from solutions; CdMnTe; Room-temperature gamma ray detector
资金
- National Natural Science Foundations of China [50872111, 50902113, 50902114]
- National Basic Research Program of China [2011CB610406]
- 111 Project of China [B08040]
- NPU Foundation for Fundamental Research
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China
Cd1-xMnxTe (CdMnTe) crystals were grown by the solution technique using Te as a solvent and the growth was performed in a vertical Bridgman arrangement with the accelerated crucible rotation technique (ACRT). Ingot in the diameter of 30 mm and length of 60 mm was obtained. As-grown crystals showed a resistivity of 2.065 x 10(10) Omega cm and mobility life time product of electrons of 1.61 x 10(-3) cm(2) V-1. PL spectrum and IR transmittance measurements revealed that the as-grown CdMnTe possessed high crystalline quality. A CdMnTe detector was fabricated with planar configuration structure, which showed a resolution of 12.51% of the Am-241 at 59.5 keV peak. In conclusion, the Te solution vertical Bridgman technique was proved to be a practical way to effectively reduce the twins in CdMnTe crystal and to produce high quality detector-grade CdMnTe crystal with good spectroscopic performance. (C) 2012 Elsevier B.V. All rights reserved.
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