Application of astaxanthin as co-sensitizing agent in dye-sensitized solar cell

A solar cell and dye sensitization technology, which is applied in the application field of astaxanthin as a co-sensitizer in dye-sensitized solar cells, can solve the problems of affecting photoelectric conversion efficiency, low dye light-harvesting efficiency and self-aggregation, and achieves Effect of improving photoelectric conversion efficiency

Inactive Publication Date: 2018-05-25
卜俊元
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to use natural, green, cheap and easy-to-obtain astaxanthin as a new type of co-sensitizer to solve the problem of low light-harvesting efficiency and self-aggregation of dyes in sensitized solar cells, thereby affecting the photoelectric conversion efficiency.

Method used

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  • Application of astaxanthin as co-sensitizing agent in dye-sensitized solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: Preparation of astaxanthin / CM-b co-sensitized battery. Using chloroform / absolute ethanol (4 / 6, v / v) as a solvent, prepare a mixed solution of 0.1 mM astaxanthin and 0.1 mM CM-b as a colored dye solution. The titanium dioxide photoanode was immersed in the colored dye solution, and stood at 35°C in the dark for 24 hours. Then the soaked titanium dioxide photoanode was taken out, rinsed with a dichloromethane / absolute ethanol (1 / 1, v / v) mixed solution, and dried naturally in air to obtain a dye-sensitized titanium dioxide photoanode. The dye-sensitized titanium dioxide photoanode and platinum electrode were bonded together with polyimide tape, and an electrolyte solution was injected to prepare a dye-sensitized solar cell.

Embodiment 2

[0020] Example 2: Preparation of CM-b battery for control. Using chloroform / absolute ethanol (4 / 6, v / v) as a solvent, prepare a CM-b solution with a concentration of 0.1 mM as a colored dye solution. The titanium dioxide photoanode was immersed in the colored dye solution, and stood at 35°C in the dark for 24 hours. Then the soaked titanium dioxide photoanode was taken out, rinsed with a dichloromethane / absolute ethanol (1 / 1, v / v) mixed solution, and dried naturally in air to obtain a dye-sensitized titanium dioxide photoanode. The dye-sensitized titanium dioxide photoanode and platinum electrode were bonded together with polyimide tape, and an electrolyte solution was injected to prepare a dye-sensitized solar cell.

Embodiment 3

[0021]Example 3: Photoelectric conversion efficiency test of dye-sensitized solar cells. At room temperature, under the irradiation of monochromatic light in the visible wavelength range, the monochromatic photoelectric conversion efficiency of the dye-sensitized solar cells obtained in Examples 1 and 2 was tested. The measured astaxanthin / CM-b co-sensitization battery ratio is used for the control CM-b battery. In the wavelength range of 413-670nm, the peak value is 93% and the valley value is increased from 74% to 85%. Very good The optical window of the porphyrin dye CM-b is filled, so that it has better light-harvesting ability.

[0022] At room temperature, at 100mW cm -2 Under the irradiation of a solar simulator with a power of AM1.5, the parameters of the dye-sensitized solar cells obtained in Examples 1 and 2 were tested. The measured photocurrent density of the astaxanthin / CM-b co-sensitized cell compared with the CM-b cell used for the control was from 22.58mA cm ...

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Abstract

For the problem that the photoelectric converting efficiency is influenced since the porphyrin in the porphyrins dye-sensitized solar cell is low in light-harvesting efficiency and serious in auto-aggregation and dark current, the astaxanthin is firstly imported as co-sensitizing agent to fill up an optical window of the porphyrin, the light-harvesting efficiency of the porphyrins dye-sensitized solar cell is improved and the dark current is reduced, thereby improving the photoelectric converting efficiency of the cell. Compared with various co-sensitizing agents used for the porphyrins dye-sensitized solar cell, the astaxanthin used by the invention not only effectively improves the photoelectric converting efficiency of the cell, but also is free from any tedious synthesis step; the astaxanthin is green and clean in production process, natural and cheap, rich and easy to get, clean and green, harmless to biology and environment, and has extensive application prospect.

Description

technical field [0001] The invention relates to the application of astaxanthin as a co-sensitizer in dye-sensitized solar cells. Background technique [0002] Human energy demand continues to increase, and low-cost, environmentally friendly and efficient energy conversion and utilization methods urgently need to be developed. Dye-sensitized solar cells have developed rapidly since 1991, in which photosensitizing dyes are the core [see: (a) O'Regan, B.; Gratzel, M.Nature.1991, 353, 737; (b) Hardin, B.E.; Snaith, H.J.; McGehee, M.D. Nat. Photonics. 2012, 6, 162]. The first generation of ruthenium pyridine photosensitive dye-sensitized solar cells under standard conditions (100mW cm -2 Power and AM1.5 irradiated solar simulator irradiation), the photoelectric conversion efficiency reaches 11.4% [see: (a) Gao, F.; Wang, Y.; Shi, D.; Zhang, J.; Wang, M.; Jing, X.; Humphry-Baker, R.; Wang, P.; Zakeeruddin, S.M.; .; Li, J.; Pootrakulchote, N.; Alibabaei, L.; Ngoc-le, C.; Decopp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCH01G9/2063Y02E10/542Y02P70/50
Inventor 卜俊元
Owner 卜俊元
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