Method for preparing Al2O3 modified ZnO nano porous thin film combined electrode
A composite electrode and nanoporous technology, applied in the field of nanomaterials, can solve the problems of reducing the conversion efficiency of dye-sensitized solar cells, not achieving significant performance improvement effect, hindering electron injection efficiency, etc., achieving simple process and improved light energy conversion efficiency. , the effect of uniform thickness
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example 1
[0023] 1. Put the ZnO powder into the grinding bowl and grind it thoroughly for 0.8 hours, then sinter at 500°C for 30 minutes and then cool down to room temperature naturally.
[0024] 2. The above treated ZnO powder (2g), terpineol (8.7mL), ethyl cellulose (1.0g) and absolute ethanol (50mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then put it on the heating furnace to heat, and keep stirring for 20-30 minutes, until a viscous slurry is formed.
[0025] 3. Spread the ZnO nano-slurry evenly on the FTO conductive glass, sinter it in a box furnace at 450°C for 1 hour after drying, and take it out after natural cooling. Repeat the above operation three times to obtain a ZnO nanoparticle porous film electrode with a thickness of about 30 microns.
[0026] 4. Use a dropper to absorb the aluminum oxide sol with a molar ratio of aluminum isopropoxide to distilled water of 1:200, and drop 1 drop on the surface of the ZnO nanopa...
example 2
[0029] 1. Put the ZnO powder into the grinding bowl and grind it thoroughly for 0.5 hours, then sinter at 500°C for 30 minutes and then cool down to room temperature naturally.
[0030] 2. The above treated ZnO powder (4g), terpineol (20mL), ethyl cellulose (2.0g) and absolute ethanol (100mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then be placed on heating stove and heat, and constantly stir 20 minutes, obtain viscous shape slurry.
[0031]3. Spread the ZnO nano-slurry evenly on the FTO, sinter it in a box furnace at 450°C for 1 hour after drying, and take it out after natural cooling. A ZnO nanoparticle porous film electrode with a thickness of about 10 micrometers can be obtained.
[0032] 4. Use a dropper to absorb the aluminum oxide sol with a molar ratio of aluminum isopropoxide to distilled water of 1:200, and drop 1 drop on the surface of the ZnO nanoparticle porous film prepared above. After standing still fo...
example 3
[0034] 1. Put the ZnO powder into the grinding bowl and grind it thoroughly for 0.5 hours, then sinter at 500°C for 30 minutes and then cool down to room temperature naturally.
[0035] 2. The above treated ZnO powder (2 g), terpineol (10 mL), ethyl cellulose (1.0 g), and absolute ethanol (50 mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then be placed on heating stove and heat, and constantly stir 20 minutes, obtain viscous shape slurry.
[0036] 3. Scrape-coat the ZnO nano-slurry on the stainless steel bottom, sinter in a box furnace at 450°C for 1 hour after drying, and take it out after natural cooling. A ZnO nanoparticle porous film electrode with a thickness of about 10 micrometers can be obtained.
[0037] 4. Use a dropper to absorb the aluminum oxide sol with a molar ratio of aluminum isopropoxide to distilled water of 1:100, and drop 1 drop on the surface of the ZnO nanoparticle porous film prepared above. Afte...
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