Quaternary phosphonium salt group-containing conjugated polyelectrolyte and its use in organic photoelectric device

A conjugated polyelectrolyte, quaternary phosphonium salt technology, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of high energy consumption, high price, large-scale application limitations, etc., to improve energy conversion efficiency, improve Fill factor, effect of excellent charge extraction performance

Inactive Publication Date: 2016-01-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[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 in today's pursuit of low cost and green environmental protection, its large-scale application is limited

Method used

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  • Quaternary phosphonium salt group-containing conjugated polyelectrolyte and its use in organic photoelectric device
  • Quaternary phosphonium salt group-containing conjugated polyelectrolyte and its use in organic photoelectric device
  • Quaternary phosphonium salt group-containing conjugated polyelectrolyte and its use in organic photoelectric device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthetic routes of representative conjugated polyelectrolytes containing quaternary phosphonium salt groups The synthetic routes of PFFPhPBr, PFFPhPI, PFFBuPBr and PFFBuPI are as follows:

[0037]

[0038] (1) Monomer M1 was synthesized according to the method disclosed in literature [J.Am.Chem.Soc., 2013, 135, 15326].

[0039] (2) Monomer M2 was synthesized according to the method disclosed in literature [Macromolecules 1997, 30, 7686].

[0040] (3) Synthesis of polymer PFFBr:

[0041] Add 650 mg of monomer M1 and 643 mg of monomer M2 into a 25 mL two-necked flask, pass through nitrogen protection, add 8 mL of toluene and 4 mL of deionized water, add 850 mg of anhydrous sodium carbonate, and then add two drops of A336 (methyl trioctyl chloride ammonium chloride solution). Add 5mgPd(PPh 3 ) 4 , After reacting at 95°C for 12h, the polymer was precipitated with methanol and washed three times. 802 mg of polymer was obtained, and the yield was 90.7%.

[0042] (4)...

Embodiment 2

[0052] The conjugated polyelectrolytes PFFPhPBr, PFFPhPI, PFFBuPBr and PFFBuPI synthesized in Example 1 containing quaternary phosphonium salt groups were used as cathode interface modifiers in organic solar cells. The structure of organic solar cells is as figure 2 As shown, the sequence is: substrate 1 / ITO cathode 2 / cathode interface layer 3 / light absorbing layer 4 / anode-machine interface layer 5 / anode 6. The conjugated polyelectrolyte of the present invention is used as the cathode interface layer 3 in organic solar cells.

[0053] 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 conjugated polyelectrolyte containing quaternary phosphonium salt groups on ITO, then spin-coat the a...

Embodiment 3

[0055] Using the conjugated polyelectrolytes PFFPhPBr, PFFPhPI, PFFBuPBr and PFFBuPI synthesized in Example 1 as the cathode interface modification material in organic solar cells (ITO / ZnO cathode / cathode interface layer / active layer / anode-machine interface) layer / anode).

[0056] 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 40nm ZnO prepared by sol-gel method on ITO, then spin-coat a layer of 5nm-thick conjugated polyelectrolyte containing quaternary phosphonium salt groups on ZnO, and then spin-coat the active layer material PTB7, the thickness 100nm, finally evaporated MoO 3 and Al electrodes. All preparations were carried out in a glove box under a nitrogen atmosphere. The current-v...

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Abstract

The invention relates to a quaternary phosphonium salt group-containing conjugated polyelectrolyte and its use in an organic photoelectric device. The quaternary phosphonium salt group-containing conjugated polyelectrolyte comprises five parts A, B, R, R1 and X<->. The part A is a conjugated unit component containing a quaternary phosphonium salt group at a side chain. The part B is a conjugated unit copolymerized with the part A. The part R is a group surrounded by phosphine positive ions. The part R1 is a connection unit for connecting the conjugated unit A and the phosphine positive ion. The part X<-> is a negative ion corresponding to the phosphine positive ion. The conjugated polyelectrolyte can be used for processing of a strong polar solvent such as alcohol and is suitable for making of multilayer photoelectric devices. The quaternary phosphonium salt group-containing conjugated polyelectrolyte can be used as a cathode interface modification material in a photovoltaic device and improve device performances.

Description

technical field [0001] The invention relates to the field of macromolecule photoelectric materials, in particular to conjugated polyelectrolytes containing quaternary phosphonium salt groups and their application in organic photoelectric 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 pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/02C08G61/12H01L51/00
Inventor 黄飞胡志诚曹镛
Owner SOUTH CHINA UNIV OF TECH
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