摘要
以Na OH为辅助试剂,利用室温机械研磨结合超声振荡和滴注法,在硅基底上将普通商业锌粉制备成了针状纳米Zn O薄膜,并对其物相结构、形貌和光致发光光谱进行了表征。研究了Na OH浓度、锌粉机械研磨时间、碱性试剂类型、基底类型等对针状纳米Zn O生长的影响并提出了其生长机理。研究表明,0.036 mol/L的Na OH、锌粉研磨时间1 h、(111)取向的Si基底,最适宜生长高长径比的针状纳米Zn O结构,所制备的薄膜具有良好的光学性能,对于纳米光电子器件的发展具有参考意义。
Assisted by Na OH,we synthesized needle-like Zn O films by drip method on Si substrate. The starting materials are commercial zinc powders prepared by vibration milling at room temperature and successive ultrasonic treatment.And we analyzed the phase structure,morphology,and photoluminescence( PL) performance of the films and studied the effect of the concentration of Na OH,milling time of Zn,type of alkali solution and the type of substrate on the growth of needle-like Zn O nanostructures. We also explored the growth mechanism of the nanostructures. The results show that the best conditions to synthesize needle-like Zn O are: concentration of Na OH is 0. 036 mol / L,milling time of Zn is 1h and the substrate is Silicon with( 111) orientation. The PL spectra demonstrate that Zn O films have excellent optical property. Our results may provide references for the development of nano-optoelectronic devices.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第10期10066-10071,10077,共7页
Journal of Functional Materials
基金
国家教育部博士点基金资助项目(20113120110005)
上海市科委纳米专项资助项目(1052nm029000)
校国家级项目培育计划资助项目(12XGQ03)
关键词
机械研磨
超声振荡
NAOH
针状ZnO
光致发光
mechanical milling
sonic oscillation
NaOH
needle-like ZnO
photoluminescence
