Method for preparing modified titanium dioxide doped thin film
A titanium dioxide and thin film technology, which is applied in the field of preparation of modified titanium dioxide thin films, can solve the problems of poor doping effect, difficulty in doping and modification of titanium dioxide thin films, weak bonding force between the thin film and the substrate, etc., and achieves easy mastery, doping modification Ease of use and the effect of widening the scope of application
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specific Embodiment approach 1
[0026] Specific embodiment one: the preparation method of the doped modified titanium dioxide thin film of this embodiment is realized through the following steps:
[0027] Step 1, preparation of the modified titanium dioxide pre-film:
[0028] a. The quartz glass substrate is degreased and decontaminated, and then cleaned with deionized water to carry out protonization pretreatment on the quartz glass substrate;
[0029] b. Place the quartz glass substrate treated in step a in a 3-aminopropyltrimethoxysilane (SiRN) solution with a mass concentration of 5% to 15%, soak for 20 to 40 minutes, then wash with ethanol, and then Dry at 70℃~80℃ for 1~1.5h;
[0030] c. Place the quartz glass substrate treated in step b in a 5% di(2-hydroxypropionic acid)diammonium titanium hydroxide (TALH) solution, soak it for 10-30min, take it out and use it Wash with deionized water, dry naturally, then place in 2mmol / L polyethyleneimine (PEI), soak for 10-30min, take it out, wash with deionized wa...
specific Embodiment approach 2
[0040] Embodiment 2: This embodiment differs from Embodiment 1 in that the quartz glass substrate in step a of step 1 can also be replaced by an ITO conductive glass substrate or a single crystal silicon wafer substrate. Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0041] Specific embodiment three: what this embodiment is different from specific embodiment one or two is that the degreasing and decontamination treatment in the a step of step one is specifically: mix and prepare Piranha ( Piranha) solution, the substrate was placed in the Piranha solution at a temperature of 70° C., soaked for 20 minutes, wherein the volume ratio of concentrated sulfuric acid and hydrogen peroxide solution was 7:3. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
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