Maintaining convex interface shapes during electrodynamic gradient freeze growth of cadmium zinc telluride using a dynamic, bell-curve furnace profile

Nan Zhang, Andrew Yeckel, Jeffrey J. Derby

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A novel, bell-curve furnace temperature profile is presented and predicted to achieve macroscopically convex solid-liquid interface shapes during melt growth of CZT in an EDG furnace. A strategy is also presented to dynamically adapt this furnace profile so that uniform, convex interface shapes are maintained through an entire growth run. This approach represents a significant advance over traditional gradient-freeze profiles, which always yield concave interface shapes, and static heat transfer designs, such as pedestal design, that achieve convex interfaces over only a small portion of the growth run. Importantly, this strategy may be applied to any Bridgman configuration that utilizes multiple, controllable heating zones. Realizing a convex solidification interface via this adaptive bell-curve furnace profile is postulated to result in better crystallinity and higher yields than conventional CZT growth techniques.

Original languageEnglish (US)
Pages (from-to)113-121
Number of pages9
JournalJournal of Crystal Growth
Volume355
Issue number1
DOIs
StatePublished - Sep 15 2012

Keywords

  • A1. Computer simulation
  • A1. Convection
  • A1. Heat transfer
  • A1. Segregation
  • A2. Bridgman technique
  • B2. Semiconducting II-VI materials

Fingerprint Dive into the research topics of 'Maintaining convex interface shapes during electrodynamic gradient freeze growth of cadmium zinc telluride using a dynamic, bell-curve furnace profile'. Together they form a unique fingerprint.

Cite this