Observations on nanoscale te precipitates in CdZnTe crystals grown by the traveling heater method using high resolution transmission electron microscopy

Boru Zhou, Wanqi Jie, Tao Wang, Zongde Kou, Dou Zhao, Liying Yin, Fan Yang, Shouzhi Xi, Gangqiang Zha, Ziang Yin

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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 [112]M// [0001]P and (111)M// (1100)P. A ledge growth interface with the preferred orientation along the [111]M and [110]M was found near Te precipitates. The growth and nucleation mechanism of Te precipitates are also discussed.

Original languageEnglish
Article number26
JournalCrystals
Volume8
Issue number1
DOIs
StatePublished - 10 Jan 2018

Keywords

  • CdZnTe
  • Defects in semiconductors
  • Interface structure
  • Precipitation
  • Transmission electron microscopy (TEM)
  • Traveling heater method

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