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Starburst non-fullerene organic small molecule receptor material containing pyrene and perylene diimide and preparation method of starburst non-fullerene organic small molecule receptor material

A technology of perylene diimide and small molecule acceptor is applied in the field of non-fullerene organic small molecule acceptor material and its preparation, which can solve problems such as low electron mobility, achieve good thermal stability and increase short-circuit current. Density and production cost reduction effect

Inactive Publication Date: 2019-05-17
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of non-fullerene organic small-molecule acceptor materials has made up for the serious shortcomings of fullerene-based polymer solar cells. However, the design and research of non-fullerene small-molecule acceptors still faces huge challenges. Challenges: 1. The electron mobility of most non-fullerene small molecule acceptors is lower than typical fullerene acceptor materials; 2. Many known high-efficiency polymer donor materials and non-fullerene small molecule acceptors How to reasonably match and optimize the body is a huge project; 3. The charge separation and recombination mechanism of non-fullerene polymer solar cells may be different from traditional fullerene devices, which has yet to be explored

Method used

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  • Starburst non-fullerene organic small molecule receptor material containing pyrene and perylene diimide and preparation method of starburst non-fullerene organic small molecule receptor material
  • Starburst non-fullerene organic small molecule receptor material containing pyrene and perylene diimide and preparation method of starburst non-fullerene organic small molecule receptor material
  • Starburst non-fullerene organic small molecule receptor material containing pyrene and perylene diimide and preparation method of starburst non-fullerene organic small molecule receptor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A non-fullerene organic small molecule acceptor material with the chemical structural formula B-4TPDI, its synthesis route is as follows:

[0037]

[0038] (1) Synthesis of intermediates with chemical structural formula a:

[0039] Add (517mg, 1mmol) 1,3,6,8-tetrabromopyrene, (588mg, 6mmol) trimethylsilylacetylene compound, (140mg, 0.2mmol) bis(triphenylphosphine) palladium dichloride, (52mg , 0.2mmol) triphenylphosphine, appropriate amount of cuprous iodide, mixed into 50mL toluene solution, N 2 Heat to 80℃ for 24 hours under protection; cool to room temperature, use CH 2 Cl 2 Extracted with water, anhydrous MgSO 4 Drying, filtering, and spin-drying the solvent; finally, column chromatography is performed with petroleum ether as the eluent to obtain an orange-yellow solid, which is the intermediate compound a, with a yield of 90%. 1 H NMR(400MHz, CDCl 3 ,δ / ppm): 8.57(s, 4H), 8.26(s, 2H), 0.38(s, 36H)

[0040] (2) Synthesis of intermediates with chemical structural formula b: ...

Embodiment 2

[0046] Preparation and photovoltaic performance test of binary solar cell based on non-fullerene organic small molecule B-4TPDI acceptor material:

[0047] First, clean the purchased ITO conductive glass: use the cleaning solution, ultrapure water, acetone, ethanol, and isopropanol to ultrasonically clean each for 15 to 30 minutes, then dry it in a drying oven at 100°C for 10 minutes, take it out, and cool. 15 minutes after UV ozone treatment. Then configure the ZnO precursor solution: Weigh a certain amount of zinc acetate dihydrate and ethanolamine, and dissolve them in 2-methoxyethanol to obtain a zinc acetate dihydrate concentration of 0.75 mol L -1 , The concentration of ethanolamine is 0.75mol L -1 The solution is then placed in a glove box and stirred at room temperature for more than 8 hours for use. Put the previously processed ITO conductive glass into a glove box with a water and oxygen index of less than 1PPM, spin-coat the ZnO precursor solution, take it out, and ann...

Embodiment 3

[0055] Preparation and photovoltaic performance test of ternary solar cell based on non-fullerene organic small molecule B-4TPDI acceptor material:

[0056] The process and method of solar cell preparation and photovoltaic performance test are the same as in Example 2, except that the active layer is changed to: (1) polymer donor PTB7-Th and 2 kinds of non-fullerene organic small molecules The blend solution of body B-4TPDI and ITIC (mass ratio 0.66:0.05:0.95) (concentration 20mg / mL); (2) polymer donor PBDB-T and two non-fullerene organic small molecule receptors B-4TPDI, ITIC (mass ratio 1:0.05:0.95) blending solution (concentration 20mg / mL), and adding 0.5% of 1,8-diiodooctane as an additive.

[0057] The molecular structure of another small molecule receptor ITIC used in the present invention is as follows:

[0058]

[0059] Based on the PTB7-Th: ITIC: B-4TPDI active layer solar cell, the test results are as follows figure 1 Shown: the open circuit voltage is 0.79V, the short-ci...

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Abstract

The invention discloses a starburst non-fullerene organic small molecule receptor material containing pyrene and perylene diimide and a preparation method of the starburst non-fullerene organic smallmolecule receptor material. The non-fullerene organic small molecule receptor material is bridged with condensed nucleus pyrene and perylene bisimide units through triple bonds, the obtained materialhas good thermal stability, raw materials are common and easy to obtain and can be purified through recrystallization, and the production cost is low; and the starburst non-fullerene organic small molecule receptor material is applied to a polymer solar cell, the effect with the energy conversion efficiency being 6-8% can be achieved under the condition of an optimizing device, the starburst non-fullerene organic small molecule receptor material serves as a third component to be added into a ternary solar cell active layer, the density of a short-circuit current of the ternary solar cell active layer can be remarkably increased, the effect with the energy conversion efficiency being 8-11% can be achieved, and certain practical application value is achieved.

Description

Technical field [0001] The invention relates to a non-fullerene organic small molecule receptor material for polymer solar cells and a preparation method thereof, in particular to a star-shaped non-fullerene organic small molecule receptor material containing pyrene and perylene diimide And its preparation method. Background technique [0002] Traditional fossil fuels are non-renewable, economic development has soared energy demand, changes in energy consumption structure, and the uncontrolled exploitation and utilization of fossil fuels have led to several energy crises that have erupted worldwide, which has brought unprecedented impact to the living environment of mankind. Pressures and challenges. In response to the increasingly serious energy problem, research and development of new clean and renewable energy sources (solar energy, wind energy, tidal energy, etc.) have become a major issue facing mankind. As one of the most abundant and clean energy sources, solar energy ha...

Claims

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Application Information

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IPC IPC(8): C07D519/00H01L51/46
CPCY02E10/549
Inventor 谭松庭吴凯乐唐锋
Owner XIANGTAN UNIV
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