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Crystals 2018, 8(1), 26; doi:10.3390/cryst8010026

Observations on Nanoscale Te Precipitates in CdZnTe Crystals Grown by the Traveling Heater Method Using High Resolution Transmission Electron Microscopy

1
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
2
Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
*
Author to whom correspondence should be addressed.
Received: 20 December 2017 / Revised: 3 January 2018 / Accepted: 8 January 2018 / Published: 10 January 2018
(This article belongs to the Special Issue Crystal Chemistry of Zinc, Cadmium and Mercury)
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Abstract

Te precipitates in CdZnTe (CZT) crystals grown by the traveling heater method (THM) are investigated using high-resolution transmission electron microscopy (HRTEM). The results show that in THM-grown CZT crystals, Te precipitates are less than 10 nm in size—much smaller than those in Bridgman-grown CZT. They have hexagonal structure and form a coherent interface with zinc blend structure CZT matrix in the orientation relationship [ 1 ¯ 12 ] M / / [ 0001 ] P and ( 1 1 ¯ 1 ) M / / ( 1 ¯ 100 ) P . A ledge growth interface with the preferred orientation along the [ 1 1 ¯ 1 ] M and [ 110 ] M was found near Te precipitates. The growth and nucleation mechanism of Te precipitates are also discussed. View Full-Text
Keywords: transmission electron microscopy (TEM); traveling heater method; precipitation; interface structure; defects in semiconductors; CdZnTe transmission electron microscopy (TEM); traveling heater method; precipitation; interface structure; defects in semiconductors; CdZnTe
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Zhou, B.; Jie, W.; Wang, T.; Kou, Z.; Zhao, D.; Yin, L.; Yang, F.; Xi, S.; Zha, G.; Yin, Z. Observations on Nanoscale Te Precipitates in CdZnTe Crystals Grown by the Traveling Heater Method Using High Resolution Transmission Electron Microscopy. Crystals 2018, 8, 26.

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