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无机材料学报

无机材料学报

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BaTiO3基Au纳米颗粒复合薄膜的制备及其光学性质研究

戴树刚; 杨勇; 黄为民; 施剑林   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室 上海 200050
  • 收稿日期:2002-01-15 修回日期:2002-04-17 出版日期:2003-03-20 网络出版日期:2003-03-20

Preparation and Optical Properties of Au/BaTiO3 Nanoparticle Composite Thin Films

DAI Shu-Gang; YANG Yong; HUANG Wei-Min; SHI Jian-Lin   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050; China
  • Received:2002-01-15 Revised:2002-04-17 Published:2003-03-20 Online:2003-03-20

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摘要： 采用溶胶-凝胶(sol-gel)方法,成功的将高体积百分比的Au纳米颗粒复合到BaTiO3的非晶薄膜中,并对其光学性质进行了研究.用XRD、TEM、椭偏仪、吸收光谱、光克尔效应0KE(Optical Kerr Effect)方法对薄膜进行了表征和测试.从吸收光谱观察到表面等离子体共振SPR(Surface Plasma Resonance)峰随热处理温度升高而红移的现象.光学非线性测试表明薄膜具有高的三阶非线性极化率x(3)和超快的响应时间.

关键词: 金属纳米颗粒, 溶胶-凝胶法, 表面等离子体共振, 光学非线性

Abstract: High doping level of Au nanoparticles was successfully incorporated into sol-gel derived amorphous BaTiO3 thin films, and the optical properties of samples
were studied. The characteristics of samples were investigated by using XRD, TEM, absorption spectra, and OKE(Optical Kerr Effect) techniques. Red shift of SPR
(surface plasma resonance) absorption along with the increase of treat temperature was observed by absorption spectra. Films exhibited a larger third nonlinear
susceptibility χ(3) and superfast response time in the nonlinear optical test.

Key words: metal nanoparticles, sol-gel, surface plasma resonance, nonlinearities

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