物理化学学报 >> 2012, Vol. 28 >> Issue (01): 208-212.doi: 10.3866/PKU.WHXB201228208

光化学和辐射化学 上一篇    下一篇

硫化镉量子点的合成及其光限幅效应

郑立思, 冯苗, 詹红兵   

  1. 福州大学材料科学与工程学院, 福州 350108
  • 收稿日期:2011-06-27 修回日期:2011-10-12 发布日期:2011-12-29
  • 通讯作者: 詹红兵 E-mail:hbzhan@fzu.edu.cn
  • 基金资助:

    福建省自然科学基金(2009J01241)资助项目

Synthesis of CdS Quantum Dots and Their Optical Limiting Effect

ZHENG Li-Si, FENG Miao, ZHAN Hong-Bing   

  1. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, P. R. China
  • Received:2011-06-27 Revised:2011-10-12 Published:2011-12-29
  • Contact: ZHAN Hong-Bing E-mail:hbzhan@fzu.edu.cn
  • Supported by:

    The project was supported by the Natural Science Foundation of Fujian Province, China (2009J01241).

摘要: 采用胶体化学法制备了四种表面修饰有不同有机功能团的CdS 量子点(QDs), 利用透射电子显微镜(TEM)、紫外-可见(UV-Vis)吸收光谱、光致发光(PL)光谱、开孔Z扫描技术分别研究了四种CdS样品的线性光学和非线性光学性能. 结果表明: 颗粒大小、表面形貌和缺陷浓度是影响CdS QDs非线性光学性能的主要因素.

关键词: 硫化镉, 表面修饰, 光限幅, Z扫描

Abstract: Four kinds of CdS quantum dots (Qds) with four different surface-capping organic groups were prepared by a colloidal chemical method. The linear and nonlinear optical properties of the materials were characterized using transmission electron microscopy (TEM), ultraviolet-visible (UV-Vis) absorption spectroscopy, photoluminescence (PL) spectroscopy, and Z-scan measurements. The results show that the particle size, the surface morphology, and the defect concentration are the main factors that determine the nonlinear optical properties.

Key words: CdS, Surface modification, Optical limiting, Z-scan measurement

MSC2000: 

  • O644