Large-area patterned solid-state electrochromic thin film and preparation method and application thereof
An electrochromic, electrochromic layer technology, applied in the direction of nonlinear optics, instruments, optics, etc., can solve the problems of packaging leakage, difficult packaging, etc., and achieve the effects of low cost, simple preparation process, and low equipment cost
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Embodiment 1
[0029] In this embodiment, a large-area patterned solid-state electrochromic film is prepared based on screen printing, and its preparation method includes the following steps:
[0030] Step 1, substrate cleaning: ultrasonically clean ITO / FTO in acetone, absolute ethanol, and deionized water for 20 minutes respectively to remove dust, organic matter and other stains on the surface. After washing, dry naturally and set aside;
[0031] Step 2, prepare tungsten oxide precursor solution: Dissolve 3g of sodium tungstate dihydrate in 45mL of deionized water, add hydrochloric acid dropwise until no precipitation is formed, perform centrifugation and washing, set the speed at 6000rpm for 15min, repeat centrifugation, Wash treatment three times. Add 6 mL of hydrogen peroxide dropwise to the precipitate obtained after centrifugation, and heat in a water bath at 60°C to obtain a tungsten oxide precursor solution. Put the precursor solution into a hydrothermal kettle and heat at 180°C for...
Embodiment 2
[0038] In this embodiment, a large-area patterned solid electrochromic thin film of tungsten oxide is prepared based on screen printing, and its preparation method includes the following steps:
[0039] Step 1, substrate cleaning: ultrasonically clean ITO / FTO in acetone, absolute ethanol, and deionized water for 20 minutes respectively to remove dust, organic matter and other stains on the surface. After washing, dry naturally and set aside;
[0040] Step 2, prepare tungsten oxide precursor solution: dissolve 3g sodium tungstate dihydrate in 45mL deionized water, add hydrochloric acid dropwise until no precipitation is formed, perform centrifugation and washing treatment, set the speed at 5000rpm for 15min, repeat centrifugation, Wash treatment three times. Add 6 mL of hydrogen peroxide dropwise to the precipitate obtained after centrifugation, and heat it in a water bath at 60°C to obtain a tungsten oxide precursor solution. Put the precursor solution into a hydrothermal kett...
Embodiment 3
[0047] In this embodiment, a large-area patterned solid electrochromic thin film of tungsten oxide is prepared based on screen printing, and its preparation method includes the following steps:
[0048] Step 1, substrate cleaning: ultrasonically clean ITO / FTO in acetone, absolute ethanol, and deionized water for 20 minutes respectively to remove dust, organic matter and other stains on the surface. After washing, dry naturally and set aside;
[0049] Step 2, prepare tungsten oxide precursor solution: Dissolve 4g of sodium tungstate dihydrate in 60mL of deionized water, add hydrochloric acid dropwise until no precipitation is formed, perform centrifugation and washing, set the speed at 6000rpm for 10min, repeat centrifugation, Wash treatment three times. Add 8 mL of hydrogen peroxide dropwise to the precipitate obtained after centrifugation, and heat in a water bath at 60°C to obtain a tungsten oxide precursor solution. Put the precursor solution into a hydrothermal kettle and ...
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Abstract
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