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Compounds for use in electrolyte for solar cell, method for preparing the same, and electrolyte and solar cell having the same

A technology of solar cells and compounds, applied in electrolytic capacitors, circuits, capacitors, etc., can solve the problem of low cost, achieve the effects of promoting open circuit voltage, improving photoelectric conversion efficiency, and preventing dark current

Inactive Publication Date: 2013-03-20
EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the photoelectric conversion efficiency of dye-sensitized solar cells is not as good as that of silicon solar cells, due to the low cost, if the photoelectric conversion efficiency can be improved, it has the potential to become the mainstream technology of solar cells

Method used

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  • Compounds for use in electrolyte for solar cell, method for preparing the same, and electrolyte and solar cell having the same
  • Compounds for use in electrolyte for solar cell, method for preparing the same, and electrolyte and solar cell having the same
  • Compounds for use in electrolyte for solar cell, method for preparing the same, and electrolyte and solar cell having the same

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Experimental program
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specific Embodiment approach

[0041] According to a specific embodiment of the present invention, the compound of formula (I) can be prepared by using the compound of formula (II).

[0042] According to a specific embodiment of the present invention, the compound of formula (II) can be added to the electrolyte of solar cells, especially the electrolyte of dye-sensitized solar cells.

[0043] According to a specific embodiment of the present invention, the compound of formula (II) is used in solar cell electrolyte. According to a specific embodiment of the present invention, the compound of formula (II) is an electrolyte solution for preparing dye-sensitized solar cells. According to a specific embodiment of the present invention, the compound of formula (II) can be used as an electrolyte solution additive for dye-sensitized solar cells.

[0044] According to the present invention, the compound of formula (I) is prepared by reacting polyalkylene glycol compound, hexamethylene diisocyanate and the compound ...

Embodiment

[0085] The following examples only illustrate the composition and preparation method of the present invention, but are not intended to limit the present invention. Those skilled in the art can modify and change the following embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be as described in the claims.

[0086] The preparation of formula (II) compound

[0087] Reaction Chart 1

[0088]

Synthetic example 1

[0090] 1-Benzimidazole propanol (compound (IIa))

[0091] Put benzimidazole (14.176 grams (g), 0.12 moles (mol)) and potassium tert-butoxide (14.80 grams, 0.132 mol) into a three-necked reaction flask, add dimethyl Dimethyl sulfoxide (DMSO) 85 milliliters (ml), stirred for 1 hour until dissolved. Then, slowly add 3-chloropropanol (1-Chloro-3-hydroxypropane) (14.69 g, 0.15 mol) dropwise into the three-necked reaction flask with a 50 ml burette, the reaction condition is 60° C., under nitrogen atmosphere, Stir for 6 hours. After the reaction was completed, ethyl acetate (250 ml) and water (250 ml) were added, and the extraction was repeated 3 times. The organic layer was washed with anhydrous magnesium sulfate (Magnesium sulfate (MgSO 4 ))dry. The solvent of the filtered magnesium sulfate was removed using a rotary concentrator, and the impure solid obtained after concentration was recrystallized with ethyl acetate for purification. Next, the organic solvent was removed usi...

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Abstract

Provided is a compound of formula (I): wherein A is C2-3 alkylene; m is an integer ranging from 2 to 25; and n is an integer ranging from 3 to 10. An electrolyte for a dye-sensitized solar cell having the compound of formula (I) and / or a compound of formula (II) is further provided for increasing photoelectric conversion efficiency.

Description

technical field [0001] The present invention relates to a compound used in an electrolyte of a solar cell, in particular, a compound used in an electrolyte of a dye-sensitized solar cell. Background technique [0002] With the development of human civilization, the world is facing serious problems such as energy crisis and environmental pollution. Therefore, energy with low pollution and sustainable production has become the goal of global energy development. Solar energy is one of the energy sources that meet the above needs. Solar cells can directly convert solar energy into electrical energy, which not only helps to solve the earth's energy crisis, but also meets the requirements of reducing environmental pollution. Solar cells are generally classified into semiconductor solar cells (eg, silicon solar cells) and photoelectrochemical (photoelectrochemistry) solar cells (eg, dye-sensitized solar cells (DS SC)). et al. have published a series of literature related to dye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/73C08G18/66C08G18/48C08G18/32C08G18/38C07D235/06H01G9/035H01G9/20
CPCH01G9/2059Y02E10/542H01G9/2013C08G18/73C07D235/20C08G18/10C08G18/4833H01G9/2031Y02P70/50C08G18/2875C07D403/12H01L31/04H01M14/00
Inventor 李玉慧吕信颖李冠纬柯子衡
Owner EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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