Influence of thermal environments on the growth of bulk cadmium zinc telluride (CZT) single crystals



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Carcelen, V. and Vijayan, N. and Rodríguez Fernández, J. and Hidalgo Alcalde, Pedro and Piqueras de Noriega, Javier and Sochinskii, N. V. and Pérez, J. M. and Dieguez, E. (2009) Influence of thermal environments on the growth of bulk cadmium zinc telluride (CZT) single crystals. Journal of Crystal Growth, 311 (5). pp. 1264-1267. ISSN 0022-0248

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The II-VI compound semiconductor crystal cadmium zinc telluride (CZT) is very important in the field of room-temperature radiation detectors and medical imaging applications. In the present study, bulk CZT single crystal has been grown by (i) oscillatory Bridgman technique, (ii) from vapour phase using pyrolytic boron nitride ampoule in the Bridgman geometry, and (iii) by using a Pt tube used for the ampoule support as a cold finger. Several improvements were found in the thermal environments such as the effects of superheating and reduced growth velocity, as well as improvements in the grain size and zinc composition along the ingot. The compositional homogeneity and its current-voltage characteristic behaviour have been analysed using energy dispersive X-ray analysis and I-V method, respectively.

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© 2008 Elsevier B.V.
This work was partially supported by the following Projects: ESP2006-09935, Spanish ‘‘Ministerio de Educación y Ciencia’’; S-0505/MAT-0279, Spanish ‘‘Comunidad de Madrid’’; FP7-SEC- 2007-01, European Commission, and Contract number 14240/00/ NL/SH, European Space Agency. One of the authors VC is thankful to the Ministry of Education and Science, Spain for the financial support. The author NV is grateful to Department of Science and Technology, Govt. of India for providing the BOYSCAST fellowship. The author JRF is thankful to the Universidad Autónoma of Madrid for financial support.

Uncontrolled Keywords:Vertical Bridgman, Cdznte, Detectors, Ray
Subjects:Sciences > Physics > Materials
ID Code:25512
Deposited On:23 May 2014 16:31
Last Modified:31 Dec 2020 00:03

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