Properties of CdTe(Cl) crystal used for radiation detector

A new method is described for growing CdTe crystals doped with chloride by using a radiofrequency traveling heater method (THM) which can provide excellent uniformity for the Cl atoms in the crystal. The relationship between response characteristics by gamma -ray detection and crystal properties stu...

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Veröffentlicht in:	IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) 1993-08, Vol.40 (4), p.405-408
Hauptverfasser:	Shoji, T., Ohba, K., Onabe, H., Suehiro, T., Hiratate, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic measurements Cadmium CADMIUM COMPOUNDS CADMIUM TELLURIDES CDTE SEMICONDUCTOR DETECTORS CHALCOGENIDES CHLORINE CRYSTAL GROWTH Crystalline materials Crystals DATA DETECTION DOPED MATERIALS ELEMENTS Exact sciences and technology EXPERIMENTAL DATA FABRICATION Feeds FUNCTIONS GAMMA DETECTION HALOGENS INFORMATION INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Instruments, apparatus, components and techniques common to several branches of physics and astronomy LUMINESCENCE MATERIALS MEASURING INSTRUMENTS NONMETALS NUMERICAL DATA PHOTOLUMINESCENCE Physics RADIATION DETECTION RADIATION DETECTORS Radio frequency RESPONSE FUNCTIONS SEMICONDUCTOR DETECTORS TELLURIDES Tellurium TELLURIUM COMPOUNDS 440101 > Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments Temperature Virtual manufacturing X- and γ-ray instruments and techniques
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Beschreibung
Zusammenfassung:	A new method is described for growing CdTe crystals doped with chloride by using a radiofrequency traveling heater method (THM) which can provide excellent uniformity for the Cl atoms in the crystal. The relationship between response characteristics by gamma -ray detection and crystal properties studied by photoluminescence (PL) measurements is discussed. In the RF-THM crystal sample, the emission intensity ratios between the 1.5932 eV and 1.5905 eV lines due to bound excitons from chlorine are nearly constant for all parts of one ingot. From this result, it is suggested that the Cl atoms are uniformly distributed through the whole of the crystal. Using crystals grown by this method, a large number of high-quality radiation detectors which exhibit the same characteristics can be produced from one CdTe ingot.< >
ISSN:	0018-9499 1558-1578
DOI:	10.1109/23.256589