Thermal and optical properties study of silver nanoparticles doped in silica film on glass substrate as a function of annealing behaviour

Surender Duhan


Nano-silver doped silica films were deposited on glass slides using a dip coating process and heat treated at different temperatures. The films were characterized by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Simultaneous Thermal Analysis (STA) for their optical, chemical and structural properties. FTIR spectrometry has been studied with respect to the microstructure and chemical composition of the film. The transmission peaks of silver colloids were observed after heat treatment. It has been earlier reported that the microstructure depends closely on the solution pH and silver-doping. The present work demonstrates that the evolution of the system as a function of the sintering temperature is necessary for obtaining a nano-oxide distribution in silica matrix. At temperature 5000C, the sample was sintered for 30 min and obtained silver nanocrystallites with average size ~19 nm.     

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