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Organic solar cell material and preparation thereof

A technology of solar cells and bifunctional materials, applied in organic chemistry, circuits, photovoltaic power generation, etc., can solve problems such as small contact area, phase separation and cluster effect, and achieve thermal decomposition, improve photoelectric conversion efficiency, and increase absorption Effect

Inactive Publication Date: 2009-09-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to develop a single substance material with D-A characteristics that can simultaneously transport electrons and holes, effectively solve the problems of small contact area, phase separation and cluster effect of traditional organic solar cells, and further derivatize it , improve its absorption in the visible light segment, that is, improve the matching of its solar spectral response and improve its photoelectric conversion efficiency

Method used

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  • Organic solar cell material and preparation thereof
  • Organic solar cell material and preparation thereof
  • Organic solar cell material and preparation thereof

Examples

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Embodiment 1

[0024] Embodiment 1, the preparation of N-methyl-2-thiophene-5-{4-bis[4-(2-thienyl)phenyl]amino}phenyl-fullerene pyrrolidine:

[0025] The synthetic route is as follows:

[0026]

[0027] ①Weigh 2.528g of polished magnesium bars and place them in a three-necked flask, add 15mL of distilled tetrahydrofuran THF, protect with nitrogen, add 5mL of 2-bromothiophene dropwise with a constant pressure funnel, and reflux for 1h after the dropwise addition to stop the reaction to obtain 2- Grignard reagent of bromothiophene, weigh 4.227g tribromotriphenylamine A and 0.135g PdCl 2 (PPh 3 ) 2 Add 30mL THF to a three-neck flask, stir and add Grignard reagent, protect with nitrogen, heat to reflux for 16h, add saturated ammonium chloride to quench the reaction, extract the product with chloroform, and dry over anhydrous sodium sulfate. Purified by column chromatography using n-hexane: dichloromethane volume ratio 3:1 as the eluent to obtain 3.48 g of yellow-green needle crystal compou...

Embodiment 2

[0031]Example 2, Preparation of N-methyl-2-thiophene-5-{4-bis[4-2-(5-dicyanovinyl)thienylphenyl]amino}phenyl-fullerene pyrrolidine :

[0032] The synthetic route is as follows: the synthesis of trithiophene aniline is the same as that in Example 1.

[0033]

[0034] ① Weigh 0.613g of trithiophene aniline B into a three-necked flask, add 10mL of 1,2-dichloroethane, 2mL of DMF into it, protect it with nitrogen gas, and stir for half an hour under ice bath; start to drop the oxygen in the constant pressure funnel Phosphorus chloride 2mL, after the dropwise addition was completed, it was raised to room temperature and heated to reflux for 15 hours. Cool, pour into ice water, add 100mL saturated sodium acetate solution, add 50mL dichloromethane for extraction and separation, wash the organic layer several times with water, dry the organic layer with anhydrous sodium sulfate, use a mixed solvent of dichloromethane and ethyl acetate, dichloromethane The volume ratio of methane:e...

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Abstract

An organic solar cell material and the preparation thereof belong to the field of organic photoelectric materials. The invention discloses an organic solar cell material which contains C60-triphenylamine-thiofuran ternary system which is a fullerene-contained D-A (Donor-Accepter) type difunctional material, wherein the triphenylamine and the thiofuran are in stellated structure. Compared with the fullerene, the compound has greatly improved solubility in organic solvent, so that the process for manufacturing the large-area solar cell is simplified, stronger absorption is ensured in a visible region with a maximum of about 500 nm that is similar to the maximum of solar radiation energy of 475 nm, matching of the compound and solar spectrum radiation is enhanced, solar spectrum response of the material, as well as the photoelectric conversion efficiency is improved. In the invention, the compound can be polymerized on a macromolecule through simple ligand modification, and is made into PLED by spin coating, so as to overcome the defects of possible decomposition by heating and poor crystallization-resistant performance of the small-molecule luminescent material in the evaporation process.

Description

technical field [0001] An organic solar cell material and its preparation, specifically related to a D-A type bifunctional polymer and its derivatives at the molecular level: C 60 - Synthesis and application of triphenylamine-thiophene system and its derivatives in solar cells. It belongs to the field of organic photoelectric materials. Background technique [0002] In recent years, with the global energy demand increasing year by year, the effective use of renewable energy has become an urgent problem to be solved. Because solar energy is inexhaustible, inexhaustible, and non-polluting, it has become one of the new energy sources developed and utilized by scientists from all over the world, especially organic solar cells made of organic semiconductor materials, which have the advantages of large manufacturing area and low cost. , simplicity, flexibility and other advantages have attracted widespread attention. One of the key points for improving the photoelectric convers...

Claims

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Application Information

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IPC IPC(8): C07D409/14H01L51/46
CPCY02E10/50Y02E10/549Y02P70/50
Inventor 丁玉强吴章华王权
Owner JIANGNAN UNIV
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