INFLUENCE OF THE HOST MATRIX ON THE MICROSTRUCTURE OF SOL-GEL FILMS DOPED WITH CDS AND PBS Q-DOTS

The preparation of non-linear optical materials for integrated photoni c devices needs the development of procedures which permit a very good control of the microstructure. Sol-gel is a good method for the prepa ration of glasses doped with semiconductor Q-Dots. However, the contro l on the microstructure and the properties of the material is related to many parameters (e.g., conditions of hydrolysis,precursors, heat tr eatments, etc.). In this work the effect of the matrix on the size and size distribution of the semiconductor nanoparticles was investigated . The films were characterized by UV-VIS-NIR spectrophotometry, Grazin g Angle X-Ray Diffraction (GA-XRD), and High Resolution Transmission E lectron Microscopy (HRTEM).