Bismuth Seed-Assisted Liquid-Phase Synthesis of Germanium Telluride Nanowires

GeTe (GT) nanowires (NWs) were successfully synthesized using Bi seeds by a low-temperature solution-based process. Scanning electron microscopy (SEM) images show formation of straight and cylindrical shaped GT NWs together with spherical shaped Te particles. GT NWs were ∼50−100 nm in diameter and ∼...

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Veröffentlicht in:	Crystal growth & design 2009-02, Vol.9 (2), p.938-941
Hauptverfasser:	Lee, Myung-Ki, Kim, Tae Geun, Ju, Byeong-Kwon, Sung, Yun-Mo
Format:	Artikel
Sprache:	eng
Schlagworte:	Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of crystal growth physics of crystal growth Nanoscale materials and structures: fabrication and characterization Other topics in nanoscale materials and structures Physics Quantum wires Theory and models of crystal growth physics of crystal growth, crystal morphology and orientation
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Zusammenfassung:	GeTe (GT) nanowires (NWs) were successfully synthesized using Bi seeds by a low-temperature solution-based process. Scanning electron microscopy (SEM) images show formation of straight and cylindrical shaped GT NWs together with spherical shaped Te particles. GT NWs were ∼50−100 nm in diameter and ∼2 μm in length. X-ray diffraction (XRD) patterns of as-prepared samples show formation of hexagonal Te, orthorhombic GeTe, and amorphous phase in the samples. The [008] growth of orthorhombic GeTe NWs was identified using high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). Ostwald ripening was proposed as a growth mechanism of GT NWs. Differential scanning calorimetry (DSC) results on the samples reveal an apparently decreased melting point of GT.
ISSN:	1528-7483 1528-7505
DOI:	10.1021/cg800702d