Preparation method of photosensitive dye for solar battery

A technology for solar cells and photosensitizing dyes, applied in the field of preparing photosensitizing dyes, can solve the problems of high molar absorption coefficient, complex synthesis process, polluted environment, etc., and achieve the effects of high molar absorption coefficient, high photoelectric conversion rate, and wide absorption spectrum.

Inactive Publication Date: 2016-12-21
雷春生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problems that artificially synthesized dyes contain precious metal elements, the synthesis process is complex, separation is difficult, the cost is high, and the environment is polluted, the present invention provides a method for preparing photosensitive dyes for solar cells. Grape skins and carrots are used as raw materials to extract high-purity anthocyanins and β-carotene, and respectively configure them into dye solutions, mix the two dye solutions, and finally adjust the pH of the mixed dye to obtain photosensitive dyes for solar cells. The invention uses natural dyes Instead of synthetic dyes, it has a wide range of sources, simple extraction methods, low cost, high molar absorptivity, and no environmental pollution. The composite dye co-sensitized electrode prepared by the present invention has a fast sensitization rate and a wide absorption spectrum, and can be made into a solar cell High photoelectric conversion efficiency, is an excellent photosensitive dye

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Weigh 300g of fresh purple grape skins, wash the grape skins twice with deionized water, and place the grape skins in a dark and ventilated place to dry, put the dried grape skins into a mortar and grind for 10min, and turn them into brown Add 200mL of absolute ethanol to the mouth bottle, adjust the pH to 1 with 1% hydrochloric acid, and use 300W ultrasonic wave for 20min, leaching in a constant temperature water bath at 40°C for 4h, then place it in a dark place at 4°C for 20h, Suction filter the mixed solution, collect the filtrate, repeat the extraction of the filter residue once, put the combined filtrate into a rotary evaporator and evaporate it to a paste, and obtain the crude grape skin anthocyanins; add the above crude grape skin anthocyanins to 10 mL without In water and ethanol, stir at 200r / min until the pigment is completely dissolved, add a 10% lead acetate solution to settle the pigment until no precipitation occurs, filter with suction, soak the precipita...

example 2

[0021]Weigh 400g of fresh purple grape skins, wash the grape skins with deionized water for 3 times, and place the grape skins in a dark and ventilated place to dry, put the dried grape skins into a mortar and grind for 12min, and turn them into brown Add 250mL of absolute ethanol to the mouth bottle, adjust the pH to 2 with 1% hydrochloric acid, and use 300W ultrasonic wave for 25min, extract in a constant temperature water bath at 45°C for 4.5h, then place it in a dark place at 4.5°C for 22h , filter the mixed solution with suction, collect the filtrate, repeat the extraction of the filter residue twice, put the combined filtrate into a rotary evaporator and evaporate it to a paste, and obtain crude grape skin anthocyanins; add the above crude grape skin anthocyanins to 15mL In absolute ethanol, stir at 250r / min until the pigment is completely dissolved, add a 10% mass fraction of lead acetate solution to settle the pigment until no precipitation occurs, filter with suction, ...

example 3

[0024] Weigh 500g of fresh purple grape skins, wash the grape skins with deionized water for 3 times, and place the grape skins in a dark and ventilated place to dry, put the dried grape skins into a mortar and grind for 15min, and turn them into brown Add 300mL of absolute ethanol to the mouth bottle, adjust the pH to 1 with 1% hydrochloric acid, and use 300W ultrasonic wave for 30min, leaching in a constant temperature water bath at 50°C for 5h, and then place it in a dark place at 5°C for 24h. Suction filter the mixed solution, collect the filtrate, repeat the extraction of the filter residue twice, put the combined filtrate into a rotary evaporator and evaporate it to a paste, and obtain the crude grape skin anthocyanins; add the above crude grape skin anthocyanins to 20 mL of In water and ethanol, stir at 300r / min until the pigment is completely dissolved, add a 10% lead acetate solution to settle the pigment until no precipitation occurs, filter with suction, soak the pre...

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Abstract

The invention relates to a preparation method of a photosensitive dye for a solar battery and belongs to the technical field of photosensitive dyes. Aimingat the problems that a synthetic dye contains precious metal elements, the synthesis process is complex, separation is difficult, the cost is high and environmental pollution is caused, the invention provides the preparation method of the photosensitive dye for the solar battery. The preparation method comprises the following steps of: extracting high-purity anthocyanin and beta-carotene from raw materials, namely grape skin and carrots, respectively preparing dye solutions by use of the high-purity anthocyanin and beta-carotene, mixing the two dye solutions with each other, and finally regulating the pH of the mixed dye, thereby obtaining the photosensitive dye for the solar battery. Natural dye is adopted to replace the synthetic dye and is wide in source, simple in extraction method, low in cost, high in molar absorption coefficient and free from environmental pollution. The composite dye prepared by the preparation method is high in co-sensitization electrode sensitization speed and wide in absorption spectrum, and is high in photoelectric conversion efficiency when prepared into the prepared solar battery, thereby being an excellent photosensitive dye.

Description

technical field [0001] The invention relates to a method for preparing a photosensitive dye for solar cells, and belongs to the technical field of photosensitive dyes. Background technique [0002] With the continuous exploitation of fossil energy and the increasing global energy crisis, more and more countries are beginning to realize the importance of replacing fossil energy with new clean and renewable energy. At present, the energy sources mainly studied include solar energy, wind energy, water energy, biomass energy, nuclear energy and so on. Among them, solar energy is the most extensive energy source in the entire solar system. Compared with other energy sources, solar energy has the advantages of large energy, safety, cleanness, not limited by geographical conditions, inexhaustible, and inexhaustible, and has gradually been highly valued by people. . [0003] As a new generation of solar cells, dye-sensitized solar cells (DSSC) have the characteristics of low price...

Claims

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Application Information

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IPC IPC(8): C07D311/62C07C403/24C09B61/00C09B67/22H01G9/20
CPCC07C403/24C07D311/62C09B61/00C09B67/0033H01G9/20
Inventor 雷春生王龙
Owner 雷春生
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