Thin Film Optical Coatings of Vanadium Oxide and Mixed Tungsten/Vanadium Oxide Deposited by APCVD Employing Precursors of Vanadyl Acetylacetonate and a Mixture with Tungsten Hexacarbonyl

Interdependence of Structure, Morphology, and Phase Transitions in CVD Grown VO2 and V2O3 Nanostructures

“…The synthesis of VO2 (M1) films by aerosol-assisted and atmospheric pressure CVD has been extensively investigated mainly due to their easy 3 scalability, lower restriction on volatility of the precursors and easy introduction of dopants in films. [28][29][30] Nevertheless, the deposition of monoclinic VO2 (M1) is only possible in a narrow temperature window around 550 °C and usually only a limited control over surface morphology has been observed. [26,31] Nanostructured surface morphologies play an important role in the thermochromic performance of VO2 films in terms of phase transition temperature and visible light transmission.…”

“…Vanadium oxide phases have been synthesized by several methods such as sol–gel, pulsed laser deposition, sputtering, , atomic layer deposition (ALD), , or chemical vapor deposition (CVD). − The synthesis of VO 2 (M1) films by aerosol-assisted and atmospheric pressure CVD has been extensively investigated mainly due to their easy scalability, lower restriction on volatility of the precursors, and easy introduction of dopants in films. − Nevertheless, the deposition of monoclinic VO 2 (M1) is only possible in a narrow temperature window around 550 °C and usually only a limited control over surface morphology has been observed. , Nanostructured surface morphologies play an important role in the thermochromic performance of VO 2 films in terms of phase transition temperature and visible light transmission. − Recently, Binions et al reported the use of an electric field in an aerosol-assisted and atmospheric pressure CVD and demonstrated a reduction in the crystallite size and phase transition temperature. , A more common technique is the low pressure CVD, which allows a precise control of film texturing and composition, due to deposition temperature and proper choice of precursors. , …”

Production of V‐Doped P2‐type Na0.67Mn0.5Fe0.43Al0.07O2 Cathodes and Investigation of Na‐Ion Full Cells Performance

“…[41] The band of P8 (1463 cm À1 ) is related to C─O, C─OH, which came from the air. [34][35][36][37][38][39][40][41][42][43][44][45][46][47] The Raman spectra of x = 0.0, 0.04, and 0.10 are given in Figure 2b and there are seven different Raman shifts observed in the samples. When we consider the undoped sample, its spectrum is dominated by two bands, centered at (R 4 ) 578.9 cm À1 due to the transition metals located into octahedral sites.…”

Room-temperature application of VO2 microstructures on rigid and flexible substrates based on synthesis of crystalline VO2 solution

“…The peak at B143 cm À1 corresponds to the B g symmetry, [64][65][66] while the peak at B97 cm À1 is indicative of a two dimensional (2D) layered architecture, since this mode arises from the translated neighboring layers. [67][68][69][70][71][72][73][74][75] The peak at B520 cm À1 can be attributed to the silicon substrate that was used during the measurement. 76 Other phonon modes at 195 (Ag), 225 (Ag), 304 (Ag), 439 (Bg), 615 (Ag) and 700 cm À1 wavenumbers are reported VO 2 phonon vibrations.…”