Main chain donor-side chain receptor type conjugated polymer as well as preparation and application thereof

A conjugated polymer and donor technology, used in semiconductor/solid-state device manufacturing, electrical solid-state devices, semiconductor devices, etc., can solve the problems of low device efficiency and difficult to form nano-phase separation, so as to improve device efficiency and enhance nano-phase separation. effect of phase separation

Active Publication Date: 2018-05-15
东莞伏安光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, single-component solar cells have also been widely concerned by people. Inspired by the bulk heterojunction, people designed a block conjugated polymer containing donor and acceptor in the molecule for the photoactive layer, but the device efficiency much lower than expected
The main reason is that it is difficult to form a suitable nano-phase separation for the acceptor in the block copolymer, so that the charge is easy to recombine in the battery device

Method used

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  • Main chain donor-side chain receptor type conjugated polymer as well as preparation and application thereof
  • Main chain donor-side chain receptor type conjugated polymer as well as preparation and application thereof
  • Main chain donor-side chain receptor type conjugated polymer as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The representative synthetic route of polymer of the present invention sees Figure 6 ~ Figure 7 .

[0037] (1) Monomers M1 and M2 are synthesized according to the method disclosed in the literature [Journal of Materials Chemistry A, 2014, 2(23): 8773-8781.].

[0038] (2) Monomer M3 was synthesized according to the method disclosed in the literature [Chemistry of Materials, 2014, 26(11): 3495-3501.].

[0039] (3) Monomer M4 was synthesized according to the method disclosed in the literature [Energy & Environmental Science, 2017, 10(5):1243-1251.].

[0040] (4) Monomer M5 was synthesized according to the method disclosed in the literature [Advanced Materials, 2016, 28(44): 9811-9818.].

[0041] (5) Synthesis of polymers P1, P2, P3:

[0042] P1: Add monomer M1 (0.5mmol) and monomer M3 (0.5mmol) 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 wi...

Embodiment 2

[0051] The conjugated polymers P1, P2, and P3 synthesized in Example 1 are used as active layers in organic photovoltaic devices (ITO anode / anode interface layer / active layer / cathode interface layer / cathode)

[0052] 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. A layer of 20nm thick PEDOT:PSS was spin-coated on the ITO, and then the active layer materials P1, P2, and P3 were spin-coated respectively, with a thickness of 100nm. 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 prepared positive battery devices are as follows: Figure 4 The relevant data a...

Embodiment 3

[0054] The conjugated polymers P4, P5, and P6 synthesized in Example 1 are used as active layers in organic photovoltaic devices (ITO anode / anode interface layer / active layer / cathode interface layer / cathode)

[0055] 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 P4, P5, and P6 respectively, each 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 prepared positive battery devices are as follows: Figure 5 The relevan...

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Abstract

The invention belongs to the field of macromolecular photoelectronic materials, and discloses a main chain donor-side chain receptor type conjugated polymer and a preparation method thereof as well asapplication to a single-component organic solar battery. The structure of the conjugated polymer is as follows: as shown in the specification, wherein n is a positive integer less than or equal to 1,000,000, a is a positive integer from 3 to 40, R is methyl, methoxyl, nitrile group or a fluorine atom, R1, R2, R3 and R4 are the same or different alkyl chains, and A is an electron-deficient conjugated unit structure which is at least one of diazosulfide and a derivative thereof, benzotriazolimide and a derivative thereof, naphthalene dithiadiazole and a derivative thereof, and naphthylene ditrizole and a derivative thereof. A main chain of the conjugated polymer disclosed by the invention is of a P-type conjugated structure, and narrow band gap light absorption type n-type small molecules are introduced into a side chain; the main chain donor-side chain receptor type conjugated polymer is applied to the single-component organic solar battery, and no donors and no receptors are needed; separation of a nano phase of an active layer of a battery instrument can be effectively enhanced by adjusting the length of an alkyl chain on the side chain, and the instrument efficiency is improved.

Description

technical field [0001] The invention belongs to the field of macromolecule photoelectric materials, and in particular relates to a main chain donor-side chain acceptor type conjugated polymer, a preparation method thereof and an application in a single-component organic solar cell. 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. Mature photovoltaic devices 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, high energy consumption and pollution will occur during processing. And its price is very expensive, so its large-scale application is lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/42H01L51/46
CPCC08G61/123C08G61/124C08G61/126C08G2261/344C08G2261/3246C08G2261/354C08G2261/228C08G2261/3243C08G2261/3241C08G2261/3223C08G2261/145C08G2261/143C08G2261/91C08G2261/124H10K85/113H10K85/151H10K30/00Y02E10/549
Inventor 黄飞胡志诚应磊曹镛
Owner 东莞伏安光电科技有限公司
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