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利用LICVD方法制备了纳米硅颗粒.研究了不同反应气体流量条件下,纳米硅微结构的转变规律,分析了制备工艺参数对纳米硅微结构的影响机制.研究表明,在激光功率密度恒定条件下,随着反应气体流量的增加,所制备纳米硅颗粒的尺寸逐渐变小,微结构中非晶态比例随反应气流的增加而增加.

Nano-silicon particles were prepared using LICVD technique. The transform discipline of nano-silicon microstructure was studied at different parameters. The effect mechanism of parameters was studied. The results show that in the conditions of constant laser power density and reactive gas components, with the increase of the reactive gas flux, the microstructures of nano-silicon particles are dramatically different, the grain size becoming smaller gradually and the amorphous phase increasing.

参考文献

[1] Haggerty J S;Cannon W R.Laser-induced Chemical Processes[M].Steinbled J I ed. Plenum New York,1981
[2] Wang W X;Liu S H;Mei Y B et al.Study on the Preparation Techniques of Laser - induced Chemical Vapor Deposited Nanosized Silicon Powders[J].Applied Laser(应用激光),1995,15(01):13.
[3] Gao Xiaoyun;Chen Jing et al.Production of Ultrafine Si Powders by Laser Pyrolysis[J].Journal of Beijing University of Chemical Technology,1994,21(03):49.
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