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以醇酸镓Ga(OC2H5)3作前驱体,利用溶胶．凝胶法和高温氨化法相结合,成功的合成了GaN粉末。用X射线衍射(XRD)、扫描电子显微镜(SEM)、选择区电子衍射(SAED)、光致发光谱(PL)对粉末的结构、形貌和发光特性进行了表征。结果表明:在950℃时,可以得到纯度较高的GaN粉末且采用该工艺合成的GaN粉末粒度较均匀,生成的GaN多晶絮状颗粒为六方纤锌矿结构,室温下光致发光谱的测试结果发现了较强的402 nm处的近带边发光峰和460 nm处的蓝色发光峰。
With gallium alkylate Ga (OC2H5) 3 as a precursor, the use of sol. Gel method and high temperature ammoniation method, the successful synthesis of GaN powder. The structure, morphology and luminescent properties of the powders were characterized by XRD, SEM, SAED and PL. The results show that the GaN powder with high purity can be obtained at 950 ℃ and the GaN powder synthesized by this method has a uniform particle size. The resulting GaN polycrystalline flocculent particles have a hexagonal wurtzite structure. The photoluminescence spectra at room temperature The results showed that the near-band edge at 402 nm and the blue peak at 460 nm were strong.