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High-efficiency thick-film full-polymer solar cell active layer material as well as preparation method and application thereof

A solar cell, high-efficiency technology, applied in circuits, photovoltaic power generation, electrical components, etc., to achieve high efficiency, reduce production costs, and simplify device preparation processes

Inactive Publication Date: 2019-05-03
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, single-layer all-polymer solar devices with photoelectric conversion efficiencies higher than 8% using green solvents and low-cost active layer materials without thermal or solvent annealing have not been reported.

Method used

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  • High-efficiency thick-film full-polymer solar cell active layer material as well as preparation method and application thereof
  • High-efficiency thick-film full-polymer solar cell active layer material as well as preparation method and application thereof
  • High-efficiency thick-film full-polymer solar cell active layer material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Polymer Donor P(BDT)5 (TPD) 4 Synthesis

[0039] chemical reaction flow chart figure 1 Shown, concrete reaction steps and reaction conditions are as follows:

[0040] Under the protection of nitrogen, the monomer A (2,6-bis(trimethyltin)-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b :4,5-b']dithiophene) (0.110mmol) monomer B (2,6-dibromo-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[ 1,2-b:4,5-b']dithiophene) (0.012mmol) monomer C (1,3-dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4 , 6(5H)-diketone) (0.098mmol), catalyst tris(dibenzylideneacetone)dipalladium (Pd 2 (dba) 3 ) (5mol%) and the ligand tris(o-methylphenyl)phosphine (P(o-tyl) 3 ) (10mol%) was mixed and dissolved in 3mL of a mixed solvent of toluene and N,N dimethylformamide (5:1). The reaction solution was stirred and refluxed at 110°C for 48 hours, then capped with phenylboronic acid (0.11 mmol), and continued for 12 hours; then 0.3-0.5 mL of bromobenzene was added for capping, reacted at 110°C for 12 hou...

Embodiment 2

[0046] Polymer Donor P(BDT) 2 (TPD) 1 Synthesis

[0047] chemical reaction flow chart figure 2 Shown, concrete reaction steps and reaction conditions are as follows:

[0048] Under the protection of nitrogen, the monomer A (2,6-bis(trimethyltin)-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b :4,5-b']dithiophene) (0.110mmol) monomer B (2,6-dibromo-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[ 1,2-b:4,5-b']dithiophene) (0.037mmol) monomer C (1,3-dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4 , 6(5H)-diketone) (0.074mmol), catalyst tris(dibenzylideneacetone)dipalladium (Pd 2 (dba) 3 ) (5mol%) and the ligand tris(o-methylphenyl)phosphine (P(o-tyl) 3 ) (10mol%) was mixed and dissolved in 3mL of a mixed solvent of toluene and N,N dimethylformamide (5:1). The reaction solution was stirred and refluxed at 110°C for 48 hours, then capped with phenylboronic acid (0.11 mmol), and continued for 12 hours; then 0.3-0.5 mL of bromobenzene was added for capping, reacted at 110°C for 12 ...

Embodiment 3

[0054] Polymer Donor P(BDT) 3 (TPD) 1 Synthesis

[0055] chemical reaction flow chart image 3 Shown, concrete reaction steps and reaction conditions are as follows:

[0056] Under the protection of nitrogen, the monomer A (2,6-bis(trimethyltin)-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b :4,5-b']dithiophene) (0.110mmol) monomer B (2,6-dibromo-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[ 1,2-b:4,5-b']dithiophene) (0.055mmol) monomer C (1,3-dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4 , 6(5H)-diketone) (0.055mmol), catalyst tris(dibenzylideneacetone)dipalladium (Pd 2 (dba) 3 ) (5mol%) and the ligand tris(o-methylphenyl)phosphine (P(o-tyl) 3 ) (10mol%) was mixed and dissolved in 3mL of a mixed solvent of toluene and N,N dimethylformamide (5:1). The reaction solution was stirred and refluxed at 110°C for 48 hours, then capped with phenylboronic acid (0.11 mmol), and continued for 12 hours; then 0.3-0.5 mL of bromobenzene was added for capping, reacted at 110°C for 12 h...

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Abstract

The invention belongs to the field of photoelectric materials, and specifically discloses a high-efficiency thick-film full-polymer solar cell active layer material as well as a preparation method andapplication thereof. The active layer material is a composition of polymer donor P(BDT)a(TPD)b and polymer acceptor PNDI2HD-T; and the preparation method comprises the following steps: firstly the Da-Ab type binary random copolymer donor P(BDT)a(TPD)b based on benzodithiophene and thienopyrroledione is obtained by a random copolymerization method, the polymer donor P(BDT)a(TPD)b and the polymer acceptor PNDI2HD-T are mixed, 2-methyltetrahydrofuran is added, dissolution is performed under stirring, sieving treatment is performed, and therefore the polymer donor / acceptor composition solution isobtained, that is, the full-polymer solar cell active layer material. According to the method provided by the invention, a green solvent is used for dissolution, and the high-efficiency thick-film active layer composition P(BDT)5(TPD)4 / PNDI2HD-T is prepared without the need of post-treatment; the film thickness is up to 120 nm or more, and a device prepared based on such films has conversion efficiency of higher than 7% and shows high efficiency and thick film characteristics; and meanwhile, environmental protection of the green solvent and simplification of materials and processes are beneficial to commercial applications of full-polymer solar cells.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, and relates to an organic solar photoelectric material, more specifically, a high-efficiency thick-film all-polymer solar cell active layer material, a preparation method and an application thereof. technical background [0002] All-polymer solar cells (All-PSCs) made by blending p-type polymer donor materials and n-type polymer acceptor materials as photosensitive active layers are favored due to their good film-forming properties and good stability. 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 that it has great potential to replace traditional silicon-based batteries. The highest photoelectric conversion efficiency of a single-layer all-polymer battery can reach more than 10%, but in order to achieve commercialization, the most important constraints are to further ...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/46H01L51/48
CPCY02E10/549
Inventor 王文凌启淡冯文怀吕玮
Owner FUJIAN NORMAL UNIV
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