Towards optimization of ACRT schedules applied to the gradient freeze growth of cadmium zinc telluride

Mia S. Divecha, Jeffrey J. Derby

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Historically, the melt growth of II-VI crystals has benefitted from the application of the accelerated crucible rotation technique (ACRT). Here, we employ a comprehensive numerical model to assess the impact of two ACRT schedules designed for a cadmium zinc telluride growth system per the classical recommendations of Capper and co-workers. The “flow maximizing” ACRT schedule, with higher rotation, effectively mixes the solutal field in the melt but does not reduce supercooling adjacent to the growth interface. The ACRT schedule derived for stable Ekman flow, with lower rotation, proves more effective in reducing supercooling and promoting stable growth. These counterintuitive results highlight the need for more comprehensive studies on the optimization of ACRT schedules for specific growth systems and for desired growth outcomes.

Original languageEnglish (US)
Pages (from-to)126-131
Number of pages6
JournalJournal of Crystal Growth
Volume480
DOIs
StatePublished - Dec 15 2017

Keywords

  • A1. Computer simulation
  • A1. Convection
  • A1. Crystal morphology
  • A1. Heat transfer
  • A1. Mass transfer
  • B1. Semiconducting II-VI materials

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