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N-type conjugated polymer containing quinoid structure and application of N-type conjugated polymer to organic photoelectric device

A conjugated polymer, n-type technology, which is used in electric solid devices, photovoltaic power generation, electrical components, etc., can solve the problems of insufficient absorption spectrum and low absorption coefficient, so as to improve photocurrent and battery device efficiency and improve absorption. coefficient, the effect of broadening the absorption spectrum

Inactive Publication Date: 2017-11-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that the absorption coefficient of the existing receptors is not high and the absorption spectrum is not wide enough.

Method used

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  • N-type conjugated polymer containing quinoid structure and application of N-type conjugated polymer to organic photoelectric device
  • N-type conjugated polymer containing quinoid structure and application of N-type conjugated polymer to organic photoelectric device
  • N-type conjugated polymer containing quinoid structure and application of N-type conjugated polymer to organic photoelectric device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A representative synthetic route is as follows:

[0033]

[0034]

[0035] (1) Monomers M1, M4, and M7 were synthesized according to the method disclosed in the literature [Journal of Materials Chemistry C, 2015, 3(34):8904-8915.].

[0036] (2) Monomers M2, M5, and M8 were synthesized according to the method disclosed in the literature [Polymer Chemistry, 2013, 4(20):5275-5282.].

[0037] (3) Monomers M6, M9, M12, and M13 were synthesized according to the method disclosed in the literature [J.AM.CHEM.SOC.2009, 131, 7792-7799].

[0038] (4) Synthesis of polymers P1, P2, P3:

[0039] Add monomers M1 (0.16mmol) and monomers M2 (0.04mmol) and M3 (0.2mmol) into a 25mL two-necked flask, pass through nitrogen protection, and add 8mL of toluene. Add 5mg Pd(PPh 3 ) 4 , After reacting at 95°C for 12h, the polymer was precipitated with methanol and washed three times. A dark polymer P1 was obtained with a yield of 90.7%.

[0040] Add monomers M4 (0.15mmol) and monomers...

Embodiment 2

[0047] Using the conjugated polymers P1, P2, and P3 synthesized in Example 1 (the AB components in the structure are the same) as electron acceptors in organic solar cells (ITO cathode / cathode interface layer / active layer / anode-machine interface layer / anode) in the application.

[0048] Pre-cut the ITO conductive glass with a square resistance of 20 ohms / cm2 into 15mm×15mm square pieces. Use acetone, special detergent for micron-sized semiconductors, deionized water, and isopropanol to clean ultrasonically in sequence, blow nitrogen whistle, and place in a constant temperature oven for later use. Spin-coat a layer of 5nm thick PFN-Br on ITO, then spin-coat active layer materials PTB7-Th / P1, PTB7-Th / P2, PTB7-Th / P3 with a thickness of 110nm, and finally evaporate MoO 3 and Al electrodes. All preparations were carried out in a glove box under a nitrogen atmosphere. The current-voltage curves of the fabricated flip-chip devices are as follows: Figure 4 The relevant data are l...

Embodiment 3

[0050] Using the conjugated polymers P1, P2, and P3 synthesized in Example 1 (with the same AB components in the structure) as electron acceptors in organic solar cells (ITO anode / anode interface layer / active layer / cathode interface layer / cathode) in the application.

[0051] Pre-cut the ITO conductive glass with a square resistance of 20 ohms / cm2 into 15mm×15mm square pieces. Use acetone, special detergent for micron-sized semiconductors, deionized water, and isopropanol to clean ultrasonically in sequence, blow nitrogen whistle, and place in a constant temperature oven for later use. Spin-coat a layer of PEDOT:PSS with a thickness of 20 nm on the ITO, and then spin-coat the active layer materials PTB7-Th / P1, PTB7-Th / P2, and PTB7-Th / P3 with a thickness of 100 nm. Then spin-coat a layer of PFN-Br with a thickness of 5nm, and finally evaporate Al electrodes. All preparations were carried out in a glove box under a nitrogen atmosphere. The current-voltage curves of the prepar...

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Abstract

The invention relates to an n-type conjugated polymer containing a quinoid structure and the application of the n-type conjugated polymer to an organic photoelectric device. The conjugated polymer comprises three parts, and naphthalimide and a conjugated unit form a bithiophene group of the quinoid structure. The conjugated polymer has a wider absorption spectrum and a higher absorption coefficient, and can be used in an efficient organic solar cell as an efficient electron acceptor. A bithiophene unit capable of forming the quinoid structure is introduced into the n-type semiconductor conjugated polymer, so that the absorption coefficient of the polymer is greatly increased, the absorption spectrum is expanded, and the light current of a cell device and the efficiency of the cell device are greatly improved; the novel n-type conjugated polymer containing the quinoid structure, serving as the electron receptor, can reach the balance of the short-circuit current, the open-circuit voltage and the fill factor, and can be used to prepare the all-polymer solar cell with the energy exchange efficiency higher than 10%, and the performance of the cell greatly exceeds the performance of a cell with the existing receptor.

Description

technical field [0001] The invention relates to the field of macromolecular optoelectronic materials, in particular to n-type conjugated polymers containing quinone structures and their application in organic optoelectronic devices. Background technique [0002] With the increasing global demand for energy, the depletion of traditional energy sources such as oil and coal, and the need to protect the earth's ecological environment, more and more scientists around the world are focusing their research on inexhaustible hydrogen, solar energy, etc. Inexhaustible renewable clean energy. [0003] Mature solar cells based on inorganic materials such as inorganic silicon, gallium arsenide, and indium phosphide have dominated the market. However, due to their high requirements for material purity, problems such as high energy consumption and pollution will occur during processing. And its price is very expensive, so its large-scale application is limited in today's pursuit of low co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/42H01L51/46
CPCC08G61/12C08G61/125C08G61/126C08G2261/91C08G2261/411C08G2261/414C08G2261/122C08G2261/3241C08G2261/3243C08G2261/3223C08G2261/18C08G2261/146C08G2261/143C08G2261/1428C08G2261/1412C08G2261/344H10K85/10H10K85/113H10K30/30Y02E10/549
Inventor 黄飞胡志诚应磊曹镛
Owner SOUTH CHINA UNIV OF TECH
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