有机溶剂热生长技术制备纳米CdS及其与聚苯胺复合膜的光学性能

以溶剂热生长技术(solvothermal technique)制备了半导体CdS的纳米微粒，并采用XRD、TEM、ED对其结构进行表征。在ITO导电玻璃上，采用电化学方法合成聚苯胺薄膜，以提拉的方法将CdS的纳米颗粒涂布其上，自组装得纳米CdS／PANI膜，并以荧光光谱(PL)及非线性Z-扫描法研究其光学特性。实验结果显示：经CdS修饰后，CdS／PANI膜的荧光发射峰强度增强，位置较单一PANI膜移至420nm处，同时经修饰后的复合物膜的非线性光学特性也有显著的提高。

Preparation of Nanosize CdS/PANI Film and Studies of Its Photoelectric Properties

A series of benefits in the field of the solid state compounds synthesis by solvothermal technology have been developed from the water-thermal method. The solvent, water in the hydrothermal reaction was replaced by the organic solvent in the solvothermal reaction. The organic solvents have lower boiling point, different permittivity, polarity and viscosity. It was convenient to design a new synthesis processes in the different solvents, and to produce the goal products. Many nanosized metal chalcogenides crystallites such as CdS, In_2S_3, Sb_2S_3, CoS_2 and SnS_2 have been synthesized by choosing the non-aqueous solvent such as benzene, toluene, tetrahytrofuran, 1,2-dimethoxyethane, ethylenediamine at a lower temperature. Nanosize CdS semiconductor particles and PANI film were synthesized using the solvothermal technique and the electro-chemistry method onto the indium-tin oxide glass (ITO) respectively. The CdS structure was characterized by means of XRD,TEM and ED techniques. The nanoparticles were doped on PANI film by dipping process, and the self-assembled nanoparticles-PANI composite film was acquired. The photoelectric properties of the self-assembled film was studied by PL and Z-scan method. The result concluded that the fluorescence radiation and nonlinear absorption coefficient can be unambiguously enhanced when PANI film was decorated with CdS nanoparticles.