Design synthesis and analysis of titanium dioxide nanostructures and heterostructures for improving photodetector performance and surface wettability

Abstract

This thesis presents a detailed investigation on the design, synthesis, and analysis of newlinetitanium dioxide (TiO2)-based nanostructures and heterostructures aimed at enhancing newlinephotodetector performance and surface wettability. Titanium dioxide, known for its wide newlinebandgap, chemical stability, and strong photoactivity, is one of the most promising metal oxide newlinesemiconductors for optoelectronic applications. However, its poor absorption in the visible newlineregion, limited carrier mobility, and rapid recombination of photogenerated charge carriers newlinerestrict its efficiency. To address these issues, this work explores the controlled fabrication and newlineinterfacial modification of TiO2 nanostructures through advanced deposition techniques and newlinepost-processing strategies newline