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Study on the near-infrared absorption properties of ZnGeP2 single crystals

  • School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Zinc germanium phosphide crystals about φ-20mm × 90mm were grown by using Bridgman techniques. The three measured crystal sheets with thickness 4.0mm were obtained from the tail, middle and top of single crystal ingot. The infrared absorption properties were studied according to the experimental and theoretical data. The results show that the transmitted intensity gradually increased from top to bottom of ZGP crystals, which is caused by the inhomogeneous distribution of different kinds of intrinsic point defect. The absorption spectra of donor defects GeZn+ and acceptor defect VZn- in ZGP crystals are calculated theoretically. It is found that the influence of acceptor defect VZn- on absorption spectra is stronger than that of donor defect GeZn+.

Original languageEnglish
Pages (from-to)1029-1033
Number of pages5
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume25
Issue number10
DOIs
StatePublished - Oct 2010
Externally publishedYes

Keywords

  • Acceptor defects
  • Defects density
  • Donor defects
  • Near infrared absorption
  • Zinc germanium phosphide

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