The optical and morphological properties of the vacuum-evaporated silver (Ag) nanoparticulate films on softened polyvinyl alcohol (PVA) modified with the 3-mercaptopropyl trimethoxysilane (MPTMS) and 3-aminopropyl trimethoxysilane (APTMS) dopants are reported. The topography of the particulate films is characterized by the field-emission scanning electron microscopy. The optical spectra broadening, red-shift, and the increase in the intensity values of the plasmonic resonance peak with the nature of dopant have a strong dependence on the particle size, shape, and inter-particle separation. The conducted experimental optical studies are supported by Finite Difference Time-Domain (FDTD) simulation results. Quantitative analysis of the Fourier-Transform Infrared Spectroscopy (FTIR) and Raman Spectroscopy studies confirm the surface modification of Ag nanoparticulate films on doped PVA substrates. The amount of polymer-metal interaction caused by the strongly interacting silane groups of the dopants and their influence on the morphology and optical properties are discussed.
The reliability and efficiency of a photovoltaic system depends mainly on its energy management system which is done by the proper management and distribution of PV voltage to the battery and to the load to avoid the shortage of power. Our project concerns with the Optimization of energy management for charged storage of a PV system by the fuzzy logic technique ensure a longer battery life, and the energy distribution available from the photovoltaic array and the batteries. The results obtained that the fuzzy logic control maintains the battery voltage almost stable at the end phase of charging and discharging.
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