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Chemical method for preparing dye-sensitized solar cell slurry
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A technology for solar cells and dye sensitization, applied in the field of preparation of dye-sensitized solar cell paste, can solve the problems of low output of P25 type titanium dioxide, complicated process of terpineol-based paste, easy introduction of impurities, etc. Large-scale industrial production, the realization of large-scale industrial production, the effect of simple process
Inactive Publication Date: 2015-04-22
HARBIN INST OF TECH
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[0003] In order to solve the problems of low output, long time and incomplete physical grinding and dispersing of P25 type titanium dioxide, and the easy introduction of impurities, and the complicated process of preparing terpineol-based slurry, the present invention realizes the spontaneous dispersion of P25 nanometer powder through chemical methods , and prepared a water-ethanol based screen printing paste without polymer additives
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specific Embodiment approach 1
[0019] Specific implementation mode 1: In this implementation mode, dye-sensitized solar cell slurry is prepared according to the following steps:
[0020] 1. Weigh 10g of P25 powder, disperse it into 40ml of deionized water, add 2.5ml of glacial acetic acid (analytical purity 99.5 wt.%), and stir evenly;
[0021] 2. After sealing the mixed solution with plastic wrap, put it in a constant temperature box to raise the temperature to 90°C and keep it warm for 12 hours;
[0022] 3. Put the reacted mixed solution into a drying oven and dry at a constant temperature of 60°C;
[0023] 4. Weigh 0.5g of the modified powder, disperse it into 0.6ml of deionized water, and ultrasonicate for 5min;
[0025] 6. Use the screen printing method to coat a layer of slurry on the cleaned conductive glass, tear off the tape after natural drying, put it ...
specific Embodiment approach 2
[0032] Specific implementation mode 2: In this implementation mode, dye-sensitized solar cell slurry is prepared according to the following steps:
[0033] 1. Weigh 10g of P25 powder, disperse it into 40ml of ethanol (analytical pure), add 2.5ml of glacial acetic acid (analytical pure 99.5 wt.%), and stir evenly;
[0034] 2. After sealing the mixed solution with plastic wrap, put it in a constant temperature box to raise the temperature to 80°C and keep it warm for 12 hours;
[0035] 3. Put the reacted mixed solution into a drying oven and dry at a constant temperature of 60°C;
[0036] 4. Weigh 0.5g of the modified powder, disperse it into 0.6ml of deionized water, and ultrasonicate for 5 minutes;
[0038] 6. Use the screen printing method to coat a layer of slurry on the cleaned conductive glass, tear off the tape after natura...
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Abstract
A chemical method for preparing dye-sensitized solar cellslurry relates to a method for preparing dye-sensitized solar cellslurry. The method comprises the following steps: (1) dispersing P25 titanium dioxide into water or ethyl alcohol, and adding glacial acetic acid as the surface modifying agent of titanium dioxide; (2) heating the mixed solution obtained from step (1) to 80-90 DEG C and keeping the mixed solution at the temperature for 10-24h; (3) drying the mixture obtained from step (2) in a vacuum drying box to obtain surface-modified powder; and (4) dispersing the powder obtained from step (3) into aqueous solution under ultrasonic waves, and adding ethyl alcohol solution containing 0.05-0.2wt% of hydrochloric acid to prepare thick titanium dioxide slurry. The method of the invention is simple and practical. The P25 powder is low in cost, an electrode prepared with the slurry is transparent, the whole process has a short period, the process is simple, and large-scale industrial production is easy to realize.
Description
technical field [0001] The invention relates to a preparation method of dye-sensitized solar cell slurry. Background technique [0002] Dye-sensitized solar cell (DSSC for short) is a newly developed organic semiconductor chemical solar cell, which consists of three parts: photoanode, counter electrode and electrolyte. Due to the low preparation cost and high photoelectric conversion efficiency High, easy to achieve large-scale industrial production and other advantages, so it has become a research hotspot in the field of solar cells. The porous photoanode made of nanocrystalline titanium dioxide is the key part of the battery. It has a large specific surface area and can provide more adsorption sites for the dye. At the same time, the porous structure provides a channel for the transport of the electrolyte to ensure the repeated excitation of the dye. process, so that the photoelectric separation process can be completed. At present, nanocrystalline titanium dioxide obtai...
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