"Learn from yesterday, live for today, hope for tomorrow" ..........Unknown source In the modern era, nanotechnology, undoubtedly, is one of the most widely explored areas in the field of materials science. This fascinating field of research emphasizes on developing new scientific and technological initiatives to solve the modern-day hi-tech industrial challenges. Within the scope of nanotechnology, semiconductor metal oxide compounds have been in the forefront of many applications such as solar cells, gas sensor arrays, capacitive contrivances, transparent conducting oxides and smart windows. In particular, metal oxides reveal complex atomic structures and electronic states that can be prudently exploited for transparent conductors, smart window materials, chemical senors etc. applications. It is now known that the fundamental reason for this complexity is owing to its frequent oxidation states, density, stoichiometry and symmetry. This is why metal oxides exhibit varied properties extending from electrically insulating to conducting on one hand, and on the other hand, from optically opaque to transparent.