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首页> 外文期刊>Journal of Crystal Growth >A simple method to synthesize β-Ga_2O_3 nanorods and their photoluminescence properties
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A simple method to synthesize β-Ga_2O_3 nanorods and their photoluminescence properties

机译：合成β-Ga_2O_3纳米棒的简单方法及其光致发光性能

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摘要

Gallium oxide hydrate (GaOOH) nanorods were prepared through a facile large-scale hydrothermal process from GaCl_3-H_2O-NaOH solutions under suitable pH conditions. The primary nanoparticles, as crystal nuclei, grew preferentially along the c-axis to become nanorod structures. The aspect ratio of the nanorods could be modulated from 1:7 to 1:15 using the diethyleneglycol (DEG) and water mixed solvent. The pH value variation in water resulted in different nucleation rates, which further resulted in different structures from quadrilateral nanorods to nanorods arrays. Calcination of the GaOOH nanorods at 900℃ in air yielded gallium oxide (β-Ga_2O_3) crystals with a similar morphology. The β-Ga_2O_3 nanorods had shown a broad blue emission peak at 455 nm with an average lifetime of 64 ns when excited at 254 nm ultraviolet (UV) light at room temperature.
机译：在适当的pH条件下，通过GaCl_3-H_2O-NaOH溶液通过简便的大规模水热过程制备了水合氧化镓（GaOOH）纳米棒。初级纳米粒子（作为晶核）优先沿c轴生长，成为纳米棒结构。使用二甘醇（DEG）和水混合溶剂可以将纳米棒的长宽比从1：7调整为1:15。水中pH值的变化导致不同的成核速率，进而导致从四边形纳米棒到纳米棒阵列的结构不同。在空气中900℃下煅烧GaOOH纳米棒会生成具有相似形貌的氧化镓（β-Ga_2O_3）晶体。当在室温下在254 nm紫外线下激发时，β-Ga_2O_3纳米棒在455 nm处显示出宽的蓝色发射峰，平均寿命为64 ns。

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