Structural and optical properties of vacuum evaporated V2O5 thin films

Optical, electronic, and microstructural properties of mixed phase RF magnetron sputtered vanadium oxide thin films on quartz and aluminized quartz

“…The calculated optical band gap value agrees well with the data reported in the literature. [31][32][33] The Urbach equation 34 is employed to understand the optical absorption of the material, which was reported for the oxide materials to interpret the lower part of the optical absorption band edge. It is observed that for the polymer materials, the optical absorption edge tail is directly proportional to the density-of-state distributions below the band gap.…”

Effect of source temperature on phase and metal–insulator transition temperature of vanadium oxide films grown by atomic layer deposition*

“…The metal-insulator transitions of V 6 O 11 and V 6 O 13 occur at −103 • C and −128 • C, respectively, which are lower than that of the main phase (VO 2 : 68 • C and V 2 O 5 258 • C) in the film. [9][10][11] The phase transition temperature of vanadium oxide films mainly depends on the energy level structure. The narrower the band gap, the lower the phase transition temperature.…”

“…[8] In addition, V 2 O 5 , V 6 O 11 , and V 6 O 13 also exhibit MIT, but their MIT temperatures are very different. [9][10][11] In fact, the V-O system has been reported to contain about 25 compounds. [12] It is experimentally challenging to control the optimum combination that would result in the accurate mixture of vanadium and oxygen in the desired proportion.…”

The Enhanced Photocatalytic Properties for Water Oxidation over Bi/BiVO4/V2O5 Composite

“…Figure shows the schematic illustration of photogenerated charges transfer on H-450. The conduction band (CB) and valence band (VB) potentials of BiVO 4 and V 2 O 5 can be calculated by related equations. , For an amorphous semiconductor, there are two tail states at the top of valence band and at the bottom of conduction band due to the localized states compared to crystalline semiconductor . So, the band structure of amorphous V 2 O 5 is illustrated as the thickened localized states of CB and VB as shown in Figure .…”