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Organic dye sensitized solar cell and preparation method thereof

A technology of solar cells and organic dyes, applied in the field of solar cells, can solve the problems of high cost and high price of solar cells

Inactive Publication Date: 2018-12-18
NANJING CHUQING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides an organic dye-sensitized solar cell and a preparation method thereof, to solve the problem of high cost of solar cells caused by the high price of existing noble metal-containing organic photosensitizers and Pt electrodes, improving electrolyte corrosion resistance, Issues of electrolyte catalytic activity, photoelectric performance and stability, and market competitiveness

Method used

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  • Organic dye sensitized solar cell and preparation method thereof
  • Organic dye sensitized solar cell and preparation method thereof
  • Organic dye sensitized solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation of embodiment 1 organic dye-sensitized solar cell I

[0047] Step 1. Preparation of organic dye-sensitized photoanode: screen-print 20nm titanium dioxide colloid on clean FTO glass, put it in a muffle furnace for 15, 15 and 30 minutes at 150, 350 and 500°C respectively, and cool to After 70°C, a titanium dioxide layer that is well combined with FTO is obtained, and different layer thicknesses can be obtained by multiple printings; the photoanode is immersed in a concentration of 2.5×10 -4 mol / L organic dye solution with D-π-A structure, add chenodeoxycholic acid as a co-adsorbent, soak for 24 hours, take it out, wash it with absolute ethanol, and dry it with nitrogen;

[0048] The organic dye of the D-π-A type structure is obtained by the following method:

[0049] (1) Preparation of bis-hexyloxytriphenylamine: In a 100ml single-mouth bottle, add 4.4g (80mmol) potassium hydroxide, 40ml dimethyl sulfoxide, 4.4g (20mmol) p-iodophenol and 2.8ml (20mmol) )...

Embodiment 2

[0060] Embodiment 2 Preparation of organic dye-sensitized solar cell II

[0061] Step 1. Preparation of organic dye-sensitized photoanode: screen-print 20nm titanium dioxide colloid on clean FTO glass, put it in a muffle furnace for 15, 15 and 30 minutes at 150, 350 and 500°C respectively, and cool to After 70°C, a titanium dioxide layer that is well combined with FTO is obtained, and different layer thicknesses can be obtained by multiple printings; the photoanode is immersed in a concentration of 2.5×10 -4 mol / L organic dye solution with D-π-A structure, add chenodeoxycholic acid as a co-adsorbent, soak for 24 hours, take it out, wash it with absolute ethanol, and dry it with nitrogen;

[0062] The organic dye of the D-π-A type structure is obtained by the following method:

[0063] (1) Preparation of triphenylamine monoaldehyde: under ice-bath conditions, slowly add 1ml (11.2mmol) of phosphorus oxychloride dropwise to a reaction flask filled with 15ml (194.5mmol) of N,N-di...

Embodiment 3

[0074] Embodiment 3 Preparation of organic dye-sensitized solar cell III

[0075] Step 1. Preparation of organic dye-sensitized photoanode: screen-print 20nm titanium dioxide colloid on clean FTO glass, put it in a muffle furnace for 15, 15 and 30 minutes at 150, 350 and 500°C respectively, and cool to After 70°C, a titanium dioxide layer that is well combined with FTO is obtained, and different layer thicknesses can be obtained by multiple printings; the photoanode is immersed in a concentration of 2.5×10 -4 mol / L organic dye solution with D-π-A structure, add chenodeoxycholic acid as a co-adsorbent, soak for 24 hours, take it out, wash it with absolute ethanol, and dry it with nitrogen;

[0076] The organic dye of the D-π-A type structure is obtained by the following method:

[0077] (1) Preparation of styrene-substituted triphenylamine monoaldehyde: Weigh 4.3g (9.9mmol) benyltriphenylphosphine bromide and add it to a 100ml three-necked flask, then add 60ml of dry THF, cool...

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Abstract

The invention discloses an organic dye sensitized solar cell, comprising an organic dye sensitized photoanode, a composite counter electrode and a gel electrolyte, and the gel electrolyte is injectedbetween the organic dye sensitized photoanode and the composite counter electrode. Compared with the prior art, in the organic dye sensitized solar cell and the preparation method thereof provided bythe invention, organic dye with a D-pi-A-type structure serving as a sensitizer has a strong electron push-pull system, has a higher molar extinction coefficient and wider spectral response range, a graphene / platinum composite layer and a titanium dioxide reflective layer coated on the counter electrode have strong catalytic performance and electrical conductivity, the sunlight not absorbed by thephotoanode can be reflected back to the photoanode to be subjected to secondary absorption, the usage amount of valuable catalyst is reduced, thereby reducing cost, and the gel electrolyte has relatively high conductivity and electrochemical stability, which can remarkably improve the short circuit current and open circuit voltage of the battery, high light stability and thermal stability are achieved, and the solar cell has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to an organic dye-sensitized solar cell and a preparation method thereof. Background technique [0002] With the increasingly prominent problems of resource shortage and environmental pollution, solar energy, as a clean and renewable energy, has attracted more and more attention from the world. At present, photoelectric conversion through solar cells is one of the main ways for human beings to utilize solar energy. Among solar cells, silicon solar cells account for 90% of solar cells due to their high conversion rate and mature technology. However, silicon-based solar cells are difficult to popularize due to their complex process, high price and demanding materials. How to improve the photoelectric conversion efficiency of solar cells and effectively reduce their manufacturing costs has become the goal pursued by many solar cell workers. [0003] Dye-sensitized solar cell (DSS...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCH01G9/2009H01G9/2022H01G9/2031H01G9/2059Y02E10/542
Inventor 沈荣存
Owner NANJING CHUQING ELECTRONICS TECH CO LTD
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