Patent ID: 6919283

Claim:
A method for fabricating composite thin films comprising the steps of: (a) selecting precursor compounds and solvents and forming a chemical precursor solution; (b) dissolving said precursor compounds in said solvents and forming a homogenous solution; (c) hydrolyzing and polycondensating said precursor solution and stabilizing said precursor solution; (d) depositing said chemical precursor solution onto a suitable substrate and forming a wet thin film of Ta 2 O 5 ; (e) drying said wet thin film; (f) baking said thin film and removing organics present; (g) forming a continuous Ta 2 O 5 thin film on said substrate; (h) baking said continuous Ta 2 O 5 thin film deposited on substrate under ambient conditions; (i) repeating steps (g) and (h) and obtaining a desired thickness of said thin film; and (j) annealing said continuous Ta 2 O 5 thin film deposited on said substrate at varying temperatures, times and oxygen flow rates and forming said composite thin films having high dielectric constants and low dielectric loss at microwave frequencies.