PbTiO_3超微粒-硬脂酸复合LB膜的光谱特性

Spectral Characteristic of PbTiO 3 Ultrafine Particle Stearic Acid Composite LB Film

ＰｂＴｉＯ３超微粒－硬脂酸复合超薄膜用ＬＢ膜技术制备，用π－Ａ曲线和原子力显微镜（ＡＦＭ）进行膜性能的表征。紫外－可见光吸收光谱、荧光光谱和拉曼光谱表明：ＰｂＴｉＯ３超微粒及其复合ＬＢ膜具有量子尺寸效应和介电限域效应；复合ＬＢ膜在室温下具有光致发光现象和软模发生了变化。

PbTiO 3 ultrafine particle stearic acid composite ultrafine film was fabricated by LB film technology,and characterized by π A curve and atom force mircoscope. The UV visible absorption,fluorescent and Raman spectra showed that: PbTiO 3 ultrafine particle and composite LB film had quantum size effect and dielectric confinement effect. In composite ultrathin film, PbTiO 3 ultrafine particles had photo luminescence at room temperature and their soft mode changed.