Synthesis and optical properties of PbS/ZnO composite films

Pure ZnO films and PbS/ZnO nanocomposite films of optical quality were prepared with a sol–gel method. The particle size, optical absorption, and linear refractive index of the PbS/ZnO films were measured by TEM (transmission electron microscopy), UV-Vis absorption, and ellipsometry techniques, resp...

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Bibliographic Details
Published in:Journal of applied physics 2004-05, Vol.95 (9), p.4791-4794
Main Authors: Wang, Xianghua, Shi, Jianlin, Yang, Yong, You, Guanjun, Liu, Ye, Mi, Jun, Qian, Shixiong
Format: Article
Language:English
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Summary:Pure ZnO films and PbS/ZnO nanocomposite films of optical quality were prepared with a sol–gel method. The particle size, optical absorption, and linear refractive index of the PbS/ZnO films were measured by TEM (transmission electron microscopy), UV-Vis absorption, and ellipsometry techniques, respectively. For high Pb/Zn ratios, PbS particles of size 5–8 nm are observed in TEM, and a large refractive nonlinearity of 10−7 esu with a saturable absorption was measured in picosecond Z-scan experiments.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1690864