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A kind of asymmetric quinoxaline acceptor unit material and its further copolymerized polymer material and application

A technology of polymer materials and acceptor units, which is applied in the field of organic synthesis and solar cells, can solve the problems of poor photoelectric conversion efficiency of Qx, and achieve the effect of improving photoelectric conversion efficiency and increasing solubility

Active Publication Date: 2021-11-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Quinoxaline (Qx) and its derivatives are widely used in optoelectronic applications because they can change side chains such as alkyl chains, conjugated aromatic rings, and functional groups. Some Qx have poor power conversion efficiency (PCE) performance

Method used

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  • A kind of asymmetric quinoxaline acceptor unit material and its further copolymerized polymer material and application
  • A kind of asymmetric quinoxaline acceptor unit material and its further copolymerized polymer material and application
  • A kind of asymmetric quinoxaline acceptor unit material and its further copolymerized polymer material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation of asymmetric quinoxaline acceptor material-1

[0045] 1) Compound 2 (15mmol), CuI (0.75mmol), Pd(PPh 3 ) 2 Cl 2 (0.3mmol), THF (60mL), NEt 3 (20mmol) was added into a 250ml three-neck flask, compound 1 (15mmol) was added under anaerobic conditions, and after reacting overnight at 80°C, the yield of compound 3 (6mmol) was 40%.

[0046]2) Compound 3 (6mmol), iodine (3mmol) and DMSO (50mL) were put into a 100ml round bottom flask, filled with Ar gas, and reacted overnight at 120°C to obtain compound 4 (4mmol) with a yield of 66.6%.

[0047] 3) Dissolve compound 5 (6mmol) and 60ml ethanol in a 250ml single-necked bottle, and react at 0°C; add sodium borohydride (30mmol) in batches, and stir at 0°C for 5.5h to obtain compound 6 (4.6mmol). rate of 76%.

[0048] 4) Put compound 6 (4.6mmol) and 100ml of acetic acid into a three-necked flask, put compound 4 (4mmol) and 60ml of acetic acid into a constant pressure dropping funnel, drop them in at 60°C under A...

Embodiment 2

[0066] Photovoltaic performance of embodiment 2 Y48

[0067] The device structure is ITO / PEDOT:PSS / Y48:Y6 / PDINO / Ag

[0068] The photovoltaic performance test method of the copolymer Y48 donor material prepared in Example 1 is: Y48 and Y6 (electron acceptor material) are mixed with a mass ratio of 1:1.5 and dissolved in chloroform (wherein the concentration of Y48 is 6.4mg / uL), after fully dissolving, add chloronaphthalene with a volume ratio of 0.5%, spin-coat on the ITO conductive glass containing PEDOT:PSS interface, anneal at 100°C for 10 minutes, and then throw off 30 microliters of PDINO ethanol solution ; After preparing the sample, it is sent to the evaporation chamber and plated with 100 nanometer silver. The obtained device was tested in a solar simulator (A.M.1.5G, 100Mw / cm 2 ) on the test. Its photovoltaic performance is: V oc =0.79(V), J sc =20.93(mA / cm 2) , FF=65.92%, finally the optimal photoelectric conversion efficiency (PCE) is 10.4%.

[0069] The phot...

Embodiment 3

[0070] Photovoltaic performance of embodiment 3 Y49

[0071] The device structure is ITO / ZnO 2 / Y49:Y6 / MoO 3 / Ag

[0072] The photovoltaic performance test method of the copolymer Y49 donor material prepared in Example 1 is: Y49 and Y6 (electron acceptor material) are mixed with a mass ratio of 1:1.3 and dissolved in chloroform (wherein the concentration of Y48 is 6.4mg / μL), after fully dissolving, add chloronaphthalene with a volume ratio of 0.5%, spin-coat on the ITO conductive glass containing zinc oxide interface, and anneal at 110°C for 5 minutes. After the sample is prepared, it is sent to the evaporation chamber, coated with 12 nanometers of molybdenum oxide, and finally coated with 100 nanometers of silver. The obtained device was tested in a solar simulator (A.M.1.5G, 100Mw / cm 2 ) on the test. Its photovoltaic performance is: V oc =0.848(V),J sc =24.76(mA / cm 2) , FF=78.57%, finally the optimal photoelectric conversion efficiency (PCE) is 16.49%.

[0073] The...

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Abstract

The invention discloses an asymmetric quinoxaline acceptor material and its further copolymerized polymer material and application. The invention introduces different side chains into the quinoxaline structure to change the planarity of the polymer molecule and increase the The solubility of the material is improved, and at the same time, the molecular packing of the polymer film is changed, which will be beneficial to the solution processing in the solar cell preparation process, and also to the adjustment of the blended morphology of the polymer donor and electron acceptor; This improves the mobility of the donor-acceptor blend film for the short-circuit current (J sc ) made a contribution and also improved the fill factor (FF) of the blend material in photovoltaic performance.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis and solar cells, and specifically relates to an asymmetric quinoxaline acceptor unit material and its further copolymerized polymer material and application. Background technique [0002] With the rapid development of society, the demand for energy is increasing year by year. However, fossil fuels are limited, and large-scale use will cause environmental pollution. Energy issues are related to the national economy and people's livelihood, which is a major concern of all countries in the world. There is an urgent need to seek new clean, renewable energy sources. Among them, solar energy has the advantages of being inexhaustible, inexhaustible, pollution-free, and easy to use, and has gradually become a substitute for new energy. [0003] Currently researched and developed solar cells include monocrystalline silicon, polycrystalline silicon, amorphous silicon, single crystal GaAs, TiO 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D409/14C07D409/04C08G61/12H01L51/42H01L51/46
CPCC07D409/14C07D409/04C08G61/126C08G2261/124C08G2261/149C08G2261/146C08G2261/1424C08G2261/3223C08G2261/3243C08G2261/414C08G2261/91H10K85/151H10K85/655H10K85/6572H10K30/00Y02E10/549
Inventor 邹应萍朱灿袁俊赵盈盈彭红建
Owner CENT SOUTH UNIV
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