Fabrication of Single-Crystalline -Ga2O3 Nanowires and Zigzag-Shaped Nanostructures

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• 作者：Yuehui Wang ; Li Hou ; Xiujuan Qin ; Shaodan Ma ; Bo Zhang ; Huiyang Gou ; Faming Gao
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：November 29, 2007
• 年：2007
• 卷：111
• 期：47
• 页码：17506 - 17511
• 全文大小：1057K
• 年卷期：v.111,no.47(November 29, 2007)
• ISSN：1932-7455

文摘

Monoclinic gallium oxide (-Ga₂O₃) nanowires and zigzag-shaped nanostructures were synthesized successfullyby heat treating the pre-prepared GaN powder at 900 C in dry nitrogen/oxygen atmosphere. The structures,morphologies, and compositions of the calcined products have been characterized by powder X-ray diffraction(XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM),and energy dispersive X-ray (EDX) analysis. The results revealed that the as-synthesized -Ga₂O₃ nanowiresand zigzag-shaped nanostuctures were pure, with high crystallinities and lengths of up to tens of micrometers.Here, The formation of diameter-modulated zigzag -Ga₂O₃ nanostructures is reported for the first time. Apossible growth mechanism for the formation of different morphologies of -Ga₂O₃ is proposed. Besides, theoptical property of -Ga₂O₃ was observed in the photoluminescence (PL) spectra, which showed that theas-prepared product emits strong visible luminescence at 416 and 580 nm ( _ex = 250 nm).