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

详细信息    查看全文

• 作者：Myung-Ki Lee ; Tae Geun Kim ; Byeong-Kwon Ju ; Yun-Mo Sung
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：February 4, 2009
• 年：2009
• 卷：9
• 期：2
• 页码：938-941
• 全文大小：202K
• 年卷期：v.9,no.2(February 4, 2009)
• ISSN：1528-7505

文摘

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.