Liquid-phase synthesis of uniform cube-shaped GeTe microcrystals

Matthew R. Buck, Ian T. Sines, Raymond E. Schaak

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Many Ge-based chalcogenide alloys, including GeTe, exhibit a reversible amorphous-to-crystalline phase change that is the basis for a wide range of current and next-generation technologies. Solution routes are attractive alternative strategies for synthesizing these materials, because they have the potential to impart morphology control on the crystallites and permit liquid-based processing of films and patterned structures. This paper describes a liquid-phase route to crystalline rhombohedral GeTe crystallites with cube-shaped morphologies and edge lengths of 1.0 ' 0.2 μm. The microcrystallites can be deposited onto planar substrates to produce highly textured (002) oriented films. During TEM imaging, the particles undergo electron beam induced fragmentation and, in some cases, partial amorphization. The GeTe crystallites are characterized by XRD, SEM, EDS (including element mapping), DSC, TEM, and electron diffraction.

Original languageEnglish (US)
Pages (from-to)3236-3240
Number of pages5
JournalChemistry of Materials
Volume22
Issue number10
DOIs
StatePublished - May 25 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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