Pt coldfinger improves quality of Bridgman-grown Cd 0.9Zn 0.1Te:Bi crystals

V. Carcelén, K. H. Kim, G. S. Camarda, A. E. Bolotnikov, A. Hossain, G. Yang, J. Crocco, H. Bensalah, F. Dierre, E. Diéguez, R. B. James

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Cadmium zinc telluride (Cd 1-xZn xTe) crystals have many applications in optoelectronics and as room-temperature detectors. We grew bismuth-doped CZT crystals by the standard Bridgman Oscillation Method, and compared them with such crystals grown in the thermal environment of a furnace modified with a Pt coldfinger (metal rod). The coldfinger serves as a tool for stabilizing the solidliquid interface by extracting heat from the as-grown crystal, and thereby improving the ingots crystalline quality. We detailed the crystals quality via high-resolution X-ray diffraction (HRXRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Synchrotron-based X-ray microfluorescence (μSXRF) images, as well as by etch-pit density (EPD) measurements. Our results demonstrated that the Pt coldfinger is an effective tool for improving the quality of CZT bulk material.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Crystal Growth
Issue number1
Publication statusPublished - 2012 Jan 1
Externally publishedYes


  • A1. Crystal structure
  • A2. Bridgman technique
  • B1. Cadmium compounds
  • B2. Semiconducting IIVI materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


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