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Conjugated-nonconjugated n-type polyelectrolytes and their applications in organic optoelectronic devices

A polyelectrolyte and non-conjugated technology, which is applied in the field of conjugated-non-conjugated N-type polyelectrolyte and its application in organic photoelectric devices, can solve the problems of high energy consumption, large-scale application limitations, and high price. Achieve the effect of improving energy conversion efficiency, excellent charge extraction performance, and high conductivity

Active Publication Date: 2019-05-14
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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  • Conjugated-nonconjugated n-type polyelectrolytes and their applications in organic optoelectronic devices
  • Conjugated-nonconjugated n-type polyelectrolytes and their applications in organic optoelectronic devices
  • Conjugated-nonconjugated n-type polyelectrolytes and their applications in organic optoelectronic devices

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Embodiment 1

[0031] The synthetic routes of representative conjugated-nonconjugated N-type polyelectrolytes are as follows:

[0032]

[0033] (1) Monomer PDI-N was synthesized according to the method disclosed in the literature [Energy Environ.Sci., 2014, 7, 1966].

[0034] (2) Synthesis of polyelectrolyte PPDI-Br: 1.4g of monomer PDI-N and 504mg of monomer 1,3-dibromopropane were added to a 15mL pressure-resistant bottle, nitrogen gas was introduced to exhaust, 20mL of DMF was added, and at 100 After reacting for 2 hours at Celsius, 20 mL of deionized water was added, and after continuing the reaction for 48 hours, it was precipitated with tetrahydrofuran and dried in vacuum to obtain 1.7 g of PPDI-Br.

[0035] (3) Synthesis of polyelectrolyte PPDI-F, PPDI-Cl, PPDI-I, PPDI-Ac, PPDI-OH and PPDI-Da: first use NaF, NaCl, NaI, CH 3 COONa, NaOH and C 7 h 15 The aqueous solution of COONa soaked the anion exchange resins for 6 hours respectively, and then washed the anion exchange resins t...

Embodiment 2

[0038] Using the conjugated-non-conjugated N-type polyelectrolyte PPDI-F synthesized in Example 1, PPDI-Cl, PPDI-Br, PPDI-I, PPDI-Ac, PPDI-OH and PPDI-Da as the cathode interface modifier in Applications in organic solar cells. The structure of organic solar cells is as figure 2 As shown, the sequence is: substrate 1 / ITO anode 2 / anode interface layer 3 / light absorbing layer 4 / cathode interface layer 5 / cathode 6. The conjugated-nonconjugated N-type polyelectrolyte of the present invention is used as the cathode interface layer 5 in organic solar cells.

[0039] 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 thick PEDOT:PSS on ITO, and then spin-coat the active layer material PTB-Th / PC...

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Abstract

The invention relates to conjugated-non-conjugated N-type polyelectrolyte and its application in organic photoelectric devices. The conjugated-non-conjugated N-type polyelectrolyte has A, B and X ‑ Three components, A is a conjugated unit component, B is a non-conjugated alkyl chain containing one or more quaternary ammonium salt groups, X ‑ It is the negative ion corresponding to the nitrogen positive ion on the B component quaternary ammonium salt. The polyelectrolyte can be processed with strong polar solvents such as alcohol, and is suitable for making complex multilayer photovoltaic devices. The conjugated-non-conjugated polyelectrolyte can be used as a cathode interface modification material in organic photoelectric devices to improve device performance.

Description

technical field [0001] The invention relates to the field of macromolecule photoelectric materials, in particular to a class of conjugated-non-conjugated N-type polyelectrolyte and its 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 pursuit of low cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02H01L51/46
CPCC08G73/0273H10K85/111H10K30/00Y02E10/549Y02P70/50
Inventor 黄飞胡志诚徐荣国曹镛
Owner SOUTH CHINA UNIV OF TECH
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