This book presents co-sputtered processes ways to produce chrome doped TiO2 thin films onto various substrates such as quartz, silicon and porous silicon. Emphasis is given on the link between the experimental preparation and physical characterization in terms of Cr content. Moreover, the structural, optical and optoelectronic investigations are emphasized throughout. The book explores the potencial applications of devices based on Cr doped TiO2 thin films as gas sensors and in photocatalysis and in the photovoltaic industry. Also, this book provides extensive leads into research literature, and each chapter contains details which aim to develop awareness of the subject and the methods used. The content presented here will be useful for graduate students as well as researchers in materials science, physics, chemistry and engineering.

This book gives the synthesis of porous silicon multilayers (PSL) by a simple route called electrochemical etching. The prepared multilayers and their physical characterizations have been carried out. These multilayers have been used to prepare distributed Bragg reflectors and planar microcavities for a potential sensing application. This book also deals with an optical study based on the refractive index deduced by experimental ellipsometric measurements as well as calculating and modeling manners such as the Bruggeman effective medium approximation. (Imprint: Novinka)