ELECTROCHROMIC THIN FILM TRANSISTORS WITH LATERAL OR VERTICAL STRUCTURE USING FUNCTIONALIZED OR NON-FUNCTIONALIZED SUBSTRATES AND METHOD OF MANUFACTURING SAME

Electrochromic thin film transistors, either self-sustaining or not, with lateral or vertical structure, deposited on any kind of functionalized substrate (1) or non-functionalized substrate are described, wherein an electrolyte material (3) and optionally an ultra-thin membrane (7) act as dielectric element, wherein the electrochromic material (2) acts as active semiconductor of the channel region, and wherein the gate (4), source (5) and drain (5) electrodes are based on metals such as titanium, gold, aluminium, or degenerate semiconductive oxides, such as indium and zinc oxide, or gallium-doped zinc oxide. The device operation control process is made by means of electronic and ionic current, and the off-state to on-state switch, or vice-versa, is followed by a change of colour of the device. A method of manufacturing the electrochromic transistors is also disclosed.