摘要
本文利用荧光光谱对ＳｎＯ２ 纳米粒子水溶胶及其有机溶胶的光学性质进行了研究。发现粒子的表面结构对其光学性质具有极大的影响。水溶胶的荧光发射是由氧空位控制的， 其发射强度较低； 有机溶胶由于表面活性剂的作用， 改变了粒子的表面结构， 得到了较强的荧光发射。
In this paper,we report the optical properties of SnO 2 semiconductor nanoparticles in hydrosols and those of SnO 2 semiconductor nanoparticles in organosols in which the surfaces of the particles are coated by a layer of organic surfactant molecules.The photoluminescence spectra of SnO 2 semiconductor nanoparticles in the hydrosols and organosols in different conditions were measured and discussed.We conclude that the surface structure of the SnO 2 semiconductor nanoparticles affects their optical properties strongly.The oxygen deficiencies on the surface of SnO 2 semiconductor nanoparticles play an important role in the optical properties.The surface modification of the particles effectively removes the surface defects of the particles and enhances the intensity of luminescence.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期651-654,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金
