Highly Oriented VO[sub 2] Thin Films Prepared by Electrodeposition

Hydrothermal Synthesis of VO2 Polymorphs: Advantages, Challenges and Prospects for the Application of Energy Efficient Smart Windows

“…Moreover, scaling VO 2 particles to nanoscale offers the possibility to further enhance its thermochromic performance at a moderate τ c . Several chemical and physical techniques have been reported to construct nanostructures of thermochromic VO 2 , including hydrothermal, magnetron sputtering, CVD, PVD, sol–gel, confined‐space combustion method, electrochemical and solution methods . Among them, vapor deposition is an efficient method for high quality VO 2 ‐film fabrication, but the equipment required for the film deposition is usually complex and expensive; a solution‐based deposition process is more cost effective, high‐yielding, and flexible, but it always suffers from multiple‐steps, lower purity, and small‐scale production .…”

Process Study and Characterization of VO2Thin Films Synthesized by ALD Using TEMAV and O3Precursors

“…[1][2][3][4][5] The phase and MIT transition of VO 2 has aroused considerable interest for a wide range of applications: thermal sensors, electrical switches, smart windows, optical limiting, modulators, IR cooled bolometer, Mott-field effect transistors, switchable tunnel barriers, and thermal energy management. [1][2][3][4][5][6][7][8][9][10] However, the growth of stoichiometric and phase pure VO 2 films is a challenging task because of the complexity of the V-O phase diagram. Stable oxides are formed with V +2 and V +5 ions, and between these phases, a wide range of mixed oxides such as Wadley phases (V +5 and V +4 ) and Magneli phases (V +4 and V +3 ) are known, most of which have no interesting phase transitions.…”

Metal-insulator transition in nanocomposite VOx films formed by anodic electrodeposition

“…14 Other potential advantages include the possibility to form films on non-planar and polymeric substrates, of interest in flexible electronics. Two approaches have been reported on the electrochemical synthesis of VO 2 ; the first involves 45 days storage of a VO x xerogel prior to annealing at 550 C, 17 while the second consists in the reduction of V 5þ in triethanolamine solutions followed by annealing at 400 C in an Ar atmosphere. 18 These methods yield films exhibiting resistance changes of 2-5 times across the transition, much lower than the values observed in physically deposited films.…”