| 超声化学合成多角星形氧化锌 |
| Synthesis of Multigonal Star-Shaped ZnO via Sonochemical Technique |
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| 摘要: 室温下将乙酸锌和三乙胺的水溶液超声辐照30 min，制得三维的多角星形半导体ZnO微晶。粉体用XRD、FESEM、TEM和EDS进行了表征。结果表明：粉体ZnO为六方纤锌矿相结构的多角星形微晶，星形结构由纳米锥组装而成，纳米锥由微小的纳米粒子构筑而成。改变超声时间和三乙胺浓度的对比实验跟踪了晶体的生长过程，分析了可能的反应机理。粉体室温下的PL表明在387nm处有一弱的紫外发射峰，在561 nm处出现强且宽的黄色发光带，黄光是与间隙氧(填隙氧)有关的深能级缺陷发光引起的。 |
| 关键词: ZnO 半导体 超声化学 多角星 |
| 基金项目: |
| Abstract: Three dimensional (3D) multigonal star-shaped semiconductor ZnO microcrystal have been successfully obtained through ultrasound irradiating the mixture aqueous solution of Zn(CH3COO)2·2H2O and triethylamine((CH2CH3)3N) for 30 min at room temperature. The as-obtained powder was characterized by XRD, FESEM, TEM and EDS. The experimental results indicate that the multigonal star-shaped ZnO with hexagonal wurtzite structure were composed of some nanocones which were self-assembled by nanoparticals. The possible formation mechanism associated with the sonochemical effect of ultrasound times and triethylamine concentrations is discussed. The room temperature PL spectrum showed a weak UV emission and a strong broad yellow emission with peak located at 387 nm and 561 nm respectively. The deep-level involved in the yellow luminescence is attributed to interstitial oxygen. |
| Keywords: zinc oxide semiconductor sonochemistry multigonal star |
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| 邓崇海,胡寒梅,黄显怀.超声化学合成多角星形氧化锌[J].无机化学学报,2009,25(3):469-473. |
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