Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (01): 208-212.doi: 10.3866/PKU.WHXB201228208

• PHOTOCHEMISTRY AND RADIATION CHEMISTRY • Previous Articles     Next Articles

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).

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