Preparation and properties of V1-xTbxO2(x=0,1,2,3,4)(M)thin films
This article mainly investigated the effects of heavy rare earth terbium element(Tb)doping on the phase structure,microstructure,phase transition temperature,optical,and mechanical properties of vanadium dioxide thin films V1-xTbxO2(x=0,1,2,3,4)(M).The analysis results show that the diffraction peaks of V1-xTbxO2(x=0,1,2,3,4)(M)samples are sharp,with no other impurity peaks observed,indicat-ing high crystallinity and purity.Tb element doping can significantly affect the microstructural charac-teristics of vanadium dioxide,with the phase transition temperature decreasing as the Tb doping level increases,reaching 59.01℃at a doping level of 4%.UV-Vis-NIR analysis indicates enhanced optical properties of vanadium dioxide thin films at Tb doping levels of 1%～4%.At 2%Tb doping,solar modu-lating ability(ΔTsol)reaches 9.1%,and visible transmittance(Tlum)is 61.5%.At 4%Tb doping,visible transmittance reaches 72.5%.Mechanical property tests show that Tb doping enhances the mechanical properties of vanadium dioxide thin films.When the doping level is 2%,the mechanical properties of VO2 films exhibit maximum values,with elastic modulus and hardness being 83.6065 GPa and 8.0026 GPa,respectively.
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