物理化学学报 >> 2007, Vol. 23 >> Issue (12): 1985-1988.doi: 10.3866/PKU.WHXB20071229

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α-ZnS纳米粒子的制备及其光致发光和拉曼特性

张东凤; 张亚辉; 郭林; 张蕊; 殷鹏刚; 张琦   

  1. 北京航空航天大学应用化学系, 北京 100083
  • 收稿日期:2007-05-18 修回日期:2007-08-23 发布日期:2007-11-30
  • 通讯作者: 郭林 E-mail:guolin@buaa.edu.cn

Synthesis of α-ZnS Nanoparticles and Their Photoluminescence and Raman Properties

ZHANG Dong-Feng; ZHANG Ya-Hui; GUO Lin; ZHANG Rui; YIN Peng-Gang; ZHANG Qi   

  1. Department of Applied Chemistry, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China
  • Received:2007-05-18 Revised:2007-08-23 Published:2007-11-30
  • Contact: GUO Lin E-mail:guolin@buaa.edu.cn

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摘要： 以湿化学法合成了直径约35 nm的蓬松的α-ZnS球形纳米粒子. XRD与TEM结果表明, 硫化锌球形纳米粒子由粒径约6 nm的二次晶粒组成. 光致发光光谱表明, 所得样品分别在约430 nm及360 nm处各有一个发射谱带, 前者源于ZnS的表面缺陷发射, 后者可被指认为六方相ZnS的近带边发射. 拉曼表征结果表明, 在较高激光功率的照射下, 没有观察到样品的光氧化现象, 表明所制备的硫化锌纳米粒子结构较为稳定.

关键词: ZnS, 纳米粒子, 光致发光, 拉曼光谱

Abstract: Nanoscaled α-ZnS spheres about 35 nm in diameter were synthesized by a chemical solution way. XRD and TEM results showed that the nanoscaled ZnS spheres were made up of secondary nanoparticles with diameters about 6 nm. Two emission bands were observed in the photoluminescence (PL) spectrum of ZnS nanocrystals, one centered at 430 nm while the other at 360 nm. The former was attributed to the surface trapped emission, while the latter was assigned to the near band-edge emission. The Raman spectra characterization showed that no photodecomposition was observed under the strong laser irradiation, which indicated that the as-prepared ZnS nanocrystals were of high chemical stability.

Key words: ZnS, Nanoparticles, Photoluminescence, Raman spectrum