A kind of preparation method of dye-sensitized solar cell doped graphene composite electrode
A solar cell and graphene composite technology, applied in the field of solar cells, can solve the problems of less dye, affecting electron diffusion coefficient, high recombination rate, etc.
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[0023] Step 1: Take a clean conductive glass (FTO) and prepare TiO by hydrothermal method 2 Nano-array, using butyl titanate as titanium source, reacts with hydrochloric acid and deionized water, the volume ratio of titanium source, hydrochloric acid and deionized water is 1:40:40, the hydrothermal reaction temperature is 150 ° C, the hydrothermal reaction The time is 20 hours, and its advantage is that it can provide a direct electron path, increase the diffusion length of electrons, reduce electron recombination, and increase electron life.
[0024] Step 2: Prepare graphene, the specific method is: add 4g of natural flake graphite into 92mL of concentrated sulfuric acid, stir well and then add 2gNaNO 3 and 12gKMnO 4 , stirred in a constant temperature water bath at 0~0.5°C for 2 hours; then raised the temperature of the constant temperature water bath to 35°C and continued to stir for 2 hours; then raised the temperature of the constant temperature water bath to 99°C and co...
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