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Crosslinkable naphthalene diimide-based all-polymer solar cell acceptor material, preparation method and application thereof

A technology of solar cells and naphthalene diimide, which is applied in the fields of electric solid-state devices, semiconductor/solid-state device manufacturing, circuits, etc., can solve problems such as hindering charge separation and transmission, efficiency attenuation, and the service life gap of all-polymer solar cells. , to achieve the effect of improving thermal stability, thermal stability, and high photoelectric conversion efficiency

Inactive Publication Date: 2020-10-16
FUJIAN NORMAL UNIV
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  • Summary
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  • Description
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Problems solved by technology

However, there is still a certain gap between the service life of all-polymer solar cells and inorganic photovoltaic cells, and it is necessary to further improve the thermal stability of all-polymer solar devices in order to realize the application
Although the photothermal stability of all-polymer cells has been greatly improved compared with fullerene and small molecule acceptor cells, the efficiency of the reported devices still decays in a short period of time at high temperatures, the main reason Because the polymer donor / acceptor active layer is obtained by physical methods, once the two macromolecular substances are mixed together, their entropy base value will be significantly reduced, and the disorder of the polymer chain will increase, resulting in the inability to form an ideal between the donor and acceptor. The phase separation size (exciton diffusion length 10nm) hinders the separation and transport of charges

Method used

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  • Crosslinkable naphthalene diimide-based all-polymer solar cell acceptor material, preparation method and application thereof
  • Crosslinkable naphthalene diimide-based all-polymer solar cell acceptor material, preparation method and application thereof
  • Crosslinkable naphthalene diimide-based all-polymer solar cell acceptor material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthesis of Polymer C-PNDI-T-0.05

[0038] The chemical reaction flow chart of the present embodiment is as figure 1 Shown, concrete reaction steps and reaction conditions are as follows:

[0039] Under nitrogen protection, 0.01045 mmol of monomer A (4,9-dibromo-2,7-bis(2-hexyldecyl)-benzo[lmn][3,8]o-phenanthroline-1, 3,6,8-tetranitro), 0.0055mmol monomer B (4,9-dibromo-2,7-di(undecenyl)-benzo[lmn][3,8]o-diazepine After mixing phenanthrene-1,3,6,8-tetranitro and 0.11mmol monomer C (2,5-bis(trimethylstannyl)thiophene), add 5mol% catalyst tris(dimethoxyphene) in sequence Benzylacetone) Dipalladium (Pd 2 (dba) 3 ) and 10mol% ligand tris(o-methylphenyl)phosphine (P(o-tyl) 3) were mixed and dissolved in 3 mL of a mixed solvent of toluene and N,N dimethylformamide (5:1). Then allow the reaction solution to stir and reflux at 110°C for 48 hours, then add 0.11 mmol of phenylboronic acid to cap it, and continue the reaction for 6 hours; Stop responding. After the reacti...

Embodiment 2

[0052] Synthesis of Polymer C-PNDI-T-0.03

[0053] The chemical reaction flow chart of the present embodiment is as figure 1 Shown, concrete reaction steps and reaction conditions are as follows:

[0054] Under nitrogen protection, 0.1012 mmol monomer A (4,9-dibromo-2,7-bis(2-hexyldecyl)-benzo[lmn][3,8]o-phenanthroline-1, 3,6,8-tetranitro), 0.0088mmol monomer B (4,9-dibromo-2,7-di(undecenyl)-benzo[lmn][3,8]o-diazepine After mixing phenanthrene-1,3,6,8-tetranitro and 0.11 mmol monomer C (2,5-bis(trimethylstannyl)thiophene), add 5 mol% catalyst tris(dibenzyl Dipalladium (Pd 2 (dba) 3 ) and 10mol% ligand tris(o-methylphenyl)phosphine (P(o-tyl) 3 ) were mixed and dissolved in 3mL of toluene and N,N dimethylformamide (5:1) mixed solvent; then the reaction solution was stirred and refluxed at 110°C for 48h, then capped with 0.11mmol phenylboronic acid, and the reaction was continued After 7 hours, add 0.3~0.5mL of bromobenzene to block, and then react at 110°C for 4 hours, the...

Embodiment 3

[0061] Synthesis of Polymer C-PNDI-Se-0.05

[0062] The chemical reaction flow chart of the present embodiment is as image 3 Shown, concrete reaction steps and reaction conditions are as follows:

[0063] Under nitrogen protection, 0.1045 mmol monomer A (4,9-dibromo-2,7-bis(2-hexyldecyl)-benzo[lmn][3,8]o-phenanthroline-1, 3,6,8-tetranitro), 0.0055mmol monomer B (4,9-dibromo-2,7-di(undecenyl)-benzo[lmn][3,8]o-diazepine After mixing phenanthrene-1,3,6,8-tetranitro and 0.11 mmol monomer C (2,5-bis(trimethylstannyl)selenophene), 5 mol% catalyst tris(di Benzylideneacetone) Dipalladium (Pd 2 (dba) 3 ) and 10mol% ligand tris (o-methylphenyl) phosphine (P (o-tyl) 3) are mixed and dissolved in 3 mL of toluene and N,N dimethylformamide (5:1) mixed solvent; then Stir and reflux the reaction solution at 110°C for 36 hours, then add 0.11 mmol of phenylboronic acid to block, and continue the reaction for 4 hours; then add 0.3 to 0.5 mL of bromobenzene to block, then react at 110°C for...

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Abstract

The invention discloses a cross-linkable naphthalene diimide-based all-polymer solar cell acceptor material, a preparation method and an application thereof, and prepares ternary random ternary materials with different olefin bond contents by adjusting the composition of monomers containing olefin bonds. Polymer and high-temperature heat treatment time, and also discloses how to obtain an active layer material with a cross-linked structure while maintaining high photoelectric conversion efficiency, expecting to obtain an all-polymer solar device with high photoelectric conversion efficiency and excellent thermal stability, to achieve Application in the field of organic solar cells, in addition, the process of the present invention is simple, and the obtained material is applied on the active layer of photovoltaic materials and compared with the active layer of general polymer donor / acceptor photovoltaic materials, it shows better high temperature resistance Therefore, the application in the field of all-polymer solar cells can significantly improve the stability of the device.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, in particular to an organic solar photoelectric material, and more specifically to a crosslinkable naphthalene diimide-based all-polymer solar cell acceptor material, a preparation method and an application thereof. Background technique [0002] All-polymer solar cells (All-PSCs) made of p-type conjugated polymer donor materials and n-type polymer acceptor materials blended as photosensitive active layers, due to good film-forming properties, good stability, etc. advantages have been extensively studied. At present, the photoelectric conversion efficiency of All-PSCs has surpassed that of fullerene-based batteries in just a few years, indicating its great potential. However, there is still a certain gap between the service life of all-polymer solar cells and inorganic photovoltaic cells, and to realize the application, it is necessary to further improve the thermal stability of all-polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01L51/42H01L51/46
CPCC08G61/126C08G2261/91C08G2261/3223C08G2261/1412C08G2261/1414C08G2261/122H10K85/151H10K30/00Y02E10/549
Inventor 王文凌启淡崔建玉
Owner FUJIAN NORMAL UNIV
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