Preparation method of polystyrene microsphere template and method for preparing zinc oxide thin film
A technology of polystyrene microspheres and porous zinc oxide, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of poor order, small single-layer template area, and difficulty in preparing single-layer polystyrene microsphere templates, etc. Achieve the effect of simple preparation method
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Embodiment 1
[0033] First prepare the polystyrene microsphere suspension that the mass fraction of polystyrene microsphere is 8%, the volume ratio of water and ethanol is 1:1, the diameter of polystyrene microsphere is 345-375nm, suspend with polystyrene microsphere Wet one side of a clean glass slide (1cm×2cm) evenly with liquid; secondly, one end of the glass slide with the wetted side facing up is in contact with the water surface in the petri dish at an inclination angle of 30° and moves toward the water surface at a speed of 5cm / min. Going deep below the water surface, the polystyrene microspheres on the glass slide spread rapidly on the water surface, and at the same time, they spontaneously assembled into a large-area ordered monolayer film at the interface between air and water under the action of water surface tension; , put the clean ITO substrate under the single-layer film at an inclination angle of 30° and then lift it up at a speed of 20cm / min to transfer the film to the ITO s...
Embodiment 2
[0035] First, 0.04mol of zinc acetate dihydrate (CH 6 o 4 Zn·2H 2O) added to 200ml of absolute ethanol (CH 3 CH 2 OH), and heated at 50°C with magnetic stirring until the solution was milky, then added dropwise 0.04mol diethanolamine (C 4 h 11 NO 2 ), until the emulsion is colorless and transparent, then add dropwise 0.08mol of triple distilled water, and stir for 2h to obtain a precursor sol with a molar concentration of 0.2mol / L; finally, the polystyrene microsphere template prepared in Example 1 is placed in Immerse in the precursor sol, then slowly pull it out vertically at a speed of 4 cm / min and dry it at room temperature for 30 min, and finally anneal it in a box furnace with a controlled heating rate at 450 °C for 2 h to remove the template, and finally obtain an ordered porous ZnO film , the characterization results are shown in the appendix Figure 6 , 7 , 8, 9, 10, 11. Figure 6 , 7 , 8 It can be seen that the ZnO film forms a regular and ordered porous st...
Embodiment 3
[0037] First prepare the polystyrene microsphere suspension that the mass fraction of polystyrene microsphere is 6%, the volume ratio of water and ethanol is 1: 1.2, the diameter of polystyrene microsphere is 345-375nm, suspend with polystyrene microsphere One side of the clean Si substrate (1cm×2cm) was evenly wetted with liquid; secondly, one end of the Si substrate with the wetted side facing up was brought into contact with the water surface in the petri dish at an inclination angle of 35° and moved towards the surface at a speed of 6cm / min. Going deep below the water surface, the polystyrene microspheres on the Si substrate rapidly diffused on the water surface, and at the same time, spontaneously assembled into a large-area ordered monolayer film at the interface between air and water under the action of water surface tension; Afterwards, put the clean glass slide under the monolayer film at an inclination angle of 35° and then lift it up at a speed of 25cm / min to transfe...
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