Low-temperature deposition method for vanadium dioxide thin film
A deposition method and technology of vanadium dioxide, applied in metal material coating process, vacuum evaporation coating, coating and other directions, can solve the problems of weakened glass tempering effect, loss of phase change properties of film, and high tempering temperature, avoiding high temperature Annealing process, great application value, the effect of simplifying the production process
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Embodiment 1
[0022] In this embodiment, VO 2 The film was prepared by DC reactive magnetron sputtering, using vanadium-tungsten alloy target (Wat.%=0.81%) as the target material, and the substrate was K9 glass, which was ultrasonically cleaned with alcohol and deionized water for 10 minutes respectively. The background vacuum is 6×10 -4 Pa, with oxygen and argon as the reaction gas and sputtering gas, before preparing the film, pre-sputter the target for 10 minutes to remove surface pollutants, the working vacuum is 0.5Pa, the oxygen partial pressure is 0.02Pa, and the deposition temperature is maintained at 245°C, during the process of depositing the film, add a negative bias voltage to the substrate, the bias voltage is -150V, the sputtering power is 80W, and the deposition time is 30min to obtain uniform and dense VO 2 film. Among them, this embodiment uses a vanadium-tungsten alloy target, and the VO can be easily adjusted by adjusting the tungsten content in the target. 2 The phase...
Embodiment 2
[0024] The vanadium dioxide thin film is prepared by DC reactive magnetron sputtering, using tungsten-doped vanadium-tungsten alloy target (W.at.%=0.81%) as the target material, and the substrate is toughened glass, which is ultrasonicated by alcohol and deionized water respectively. Wash for 10 minutes, and the background vacuum during film preparation is 6×10 -4 Pa, with oxygen and argon as the reaction gas and sputtering gas, before preparing the film, pre-sputter the target for 10 minutes to remove surface dirt, the working vacuum is 0.5Pa, the oxygen partial pressure is 0.02Pa, and the deposition temperature is maintained at At 240°C, during the process of depositing the film, a negative bias of -200V was added to the substrate, the sputtering power was 80W, and the deposition time was 30min, a uniform and dense vanadium dioxide film was obtained on the tempered glass substrate. The prepared vanadium dioxide thin film samples before and after the phase transition curves o...
Embodiment 3
[0026] The vanadium dioxide film was prepared by DC reactive magnetron sputtering, using pure vanadium as the target, and the substrate was K9 glass. After ultrasonic cleaning with alcohol and deionized water for 10 minutes, the background vacuum during film preparation was 6×10 -4 Pa, with oxygen and argon as the reaction gas and sputtering gas, before preparing the film, pre-sputter the target for 10 minutes to remove surface dirt, the working vacuum is 0.5Pa, the oxygen partial pressure is 0.02Pa, and the deposition temperature is maintained at 250°C, during the process of depositing the film, add -185V negative bias to the substrate, sputtering power is 80W, and the deposition time is 30min to obtain uniform and dense VO 2 film. The prepared vanadium dioxide thin film samples before and after the phase transition curves of sample transmittance versus wavelength are shown in image 3 , it can be seen from the figure that the prepared film has good phase transition properti...
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