sol-gel法制备GaN纳米棒的研究

Study on GaN Nanorods Prepared by Sol-gel Method

采用简单、有效的sol-gel法在1 000℃时通过氧化镓凝胶和氨气反应成功合成了GaN纳米棒。XRD和SAED的测试结果表明,GaN纳米棒为六方纤锌矿结构。用TEM观察发现,大部分GaN纳米棒平直而光滑,直径为200 nm^1.8μm,最长的纳米棒达几十微米。室温下光致发光谱的测试发现了较强的355.6 nm处的紫外发光峰和445.9 nm处的蓝色发光峰。

GaN nanorods were successfully synthesized through the reaction of Ga203 gel with NH3 at 1 000℃ by a simple and efficient sol-gel process, The nanorods were confirmed as crystalline wurtzite GaN by XRD and SAED, TEM displays that most of the GaN nanorods are straight and smooth, with diameters ranging from 200 nm to 1,8 μm and lengths typically up to tens of microns. Photoluminescence spectra at room temperature showed a strong ultraviolet luminescence peak located at 355.6 nm and a blue luminescence peak located at 445.9 nm