This monograph is indented for undergraduate students in their final years of study and post graduate students or researchers in the fields of material science. First, the general properties of nanostructured transparent oxide semiconductors are discussed and their applications in many vital fields such as in the dye-based solar cells, chemical/gas sensors, optical devices, catalysts, field effect transistors, ultraviolet (UV) photo detectors, light emitting diodes (LEDs) and piezoelectric devices. The Sol-gel dip coating method is employed in the preparation of various nanostructured transparent oxide semiconducting films (Bismuth oxide, Fe doped Bismuth oxide, Fe-doped Tin Oxide and Fe doped Zinc Oxide). And finally, X-ray Diffraction Study, Surface Morphological Properties, Ultraviolet-Visible Absorption Spectroscopy, Electrical Measurement and Photocatalytic Studies are carried out on these materials.

Dr. Timonah N. Soitah hold a Ph.D in Chemical Engineering from Harbin Institute of Technology, HIT, in China. He is Currently a Lecturer in Physics department at Jomo Kenyatta University of Agriculture and Technology, JKUAT, in Kenya.