Method for preparing shape-controllable dye-sensitized solar cell photo-anode
A technology of solar cells and dye sensitization, applied in the field of preparation of photoanode of dye-sensitized solar cells, can solve the problems such as the unique advantages of affecting the nano-size effect, the low crystallinity of titanium dioxide sol, and the unfavorable industrial production, and achieve excellent photoelectric conversion. Advantages, good prospects for industrial applications, and the effect of controllable morphology and size
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[0036] The invention provides a method for preparing a photoanode of a dye-sensitized solar cell with controllable morphology. figure 1 A flowchart showing one example of the production method of the present invention. see figure 1 , the preparation method of the present invention may include the following steps.
[0037] (1) Mix titanium alkoxide and stabilizer at a volume ratio of 1: (0.5-3) to obtain a mixed solution (solution A). Among them, n-tetrabutyl titanate and / or isopropyl titanate can be used as the titanium alkoxide. The stabilizer can be at least one of ethanol, isopropanol, ethanolamine and diethylenetriamine.
[0038] (2) Slowly add deionized water dropwise to solution A until the concentration of Ti ions is diluted to 0.1-1 mol / L to obtain a transparent solution (solution B).
[0039] (3) Add an alkali solution to the solution B until the pH is 10-11. In one example, the solution B may be mixed with an equal volume of the alkali solution, and the pH of the...
Embodiment 1
[0050] First prepare solution A: mix 100mL tetraisopropyl titanate and 200mL isopropanol; slowly add deionized water to solution A until the titanium ion concentration is diluted to 0.5mol / L to obtain solution B; volume of tetramethylammonium hydroxide solution mixed, the pH value of the tetramethylammonium hydroxide solution is 11, and reflux at 80 °C for 24 hours to obtain a transparent light yellow titanium dioxide sol; transfer the titanium dioxide sol to the polytetrafluoroethylene Heat treatment at 180°C for 5 hours in a lined reactor, centrifuge the hydroheated titanium dioxide sol at 5000rpm for 30 minutes, collect the obtained precipitate (nanocrystalline titanium dioxide) and disperse it in ethanol to prepare a titanium dioxide nanocrystalline solution with a solid content of 5%. ; Add polyethylene glycol and terpineol to the titanium dioxide nanocrystal solution, and the ratio of titanium dioxide, polyethylene glycol and terpineol is 1:3:4 to obtain a titanium dioxid...
Embodiment 2
[0052] First configure solution A: mix 100mL tetraisopropyl titanate and 100mL absolute ethanol; slowly add deionized water to solution A until the titanium ion concentration is diluted to 0.9mol / L to obtain solution B; Mix volumes of dilute ammonia solution, the pH of the ammonia solution is 10, and reflux at 80°C for 24 hours to obtain a transparent light yellow titanium dioxide sol; transfer the titanium dioxide sol to a polytetrafluoro-lined reactor at 200°C Heat treatment for 10 hours, centrifuge the hydrothermal titanium dioxide sol at 7500 rpm for 30 minutes, collect the obtained precipitate (nanocrystalline titanium dioxide) and disperse it in ethanol to prepare a titanium dioxide nanocrystal solution with a solid content of 5%; add ethyl alcohol to the titanium dioxide nanocrystal solution Base cellulose and terpineol, the ratio of titanium dioxide, ethyl cellulose and terpineol is 1:5:4, to obtain a titanium dioxide paste for screen printing; in the SnO doped with flu...
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