Polymer composite material with adjustable work function, and preparation method and application thereof

A composite material with adjustable work function technology, which is applied in the fields of application, sustainable manufacturing/processing, household appliances, etc., can solve the problems of low efficiency and inappropriate preparation methods, improve interface contact performance, reduce process requirements, and reduce raw materials Effects from a wide range of sources

Active Publication Date: 2018-01-26
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the low work function polymer used is also sensitive to thickness, this scheme is not suitable for printing
There are also researchers who exposed PEDOT:PSS film to dimethylamino-ethylene (TDAE) atmosphere to form a monolayer on the surface of PEDOT:PSS, which can reduce the work function of PEDOT to 3.8eV, but the preparation of this method way less efficient

Method used

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  • Polymer composite material with adjustable work function, and preparation method and application thereof
  • Polymer composite material with adjustable work function, and preparation method and application thereof
  • Polymer composite material with adjustable work function, and preparation method and application thereof

Examples

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preparation example Construction

[0047] An aspect of the embodiments of the present invention also provides a method for preparing the polymer composite material, comprising: uniformly mixing at least a conductive polymer and an organic dopant in a solvent to form the polymer composite material.

[0048] Another aspect of the embodiments of the present invention also provides a composite ink, which includes the polymer composite material with adjustable work function.

[0049] In some embodiments, the polymer composite material can also be combined with other inks to form the composite ink.

[0050] Correspondingly, another aspect of the embodiments of the present invention also provides a method for preparing the composite ink, which includes: dissolving or dispersing the organic dopant in a solvent, and then mixing it with a conductive polymer solution or dispersion to prepare Obtain the composite ink.

[0051] Furthermore, in some embodiments, the composite ink can also be prepared by mixing the organic d...

Embodiment 1

[0087] Example 1: Preparation of PEDOT:PSS:PEI composite and its application as a cathode interface layer in organic solar cells

[0088] 1. The preparation process of PEDOT:PSS:PEI composite ink includes:

[0089] (1) Preparation of PEI ink: Take 2mg of PEI in 1mL of deionized water, stir magnetically for 2 hours to obtain PEI solution;

[0090] (2) Mix PEDOT:PSS and PEI solutions according to the volume ratio of 8:1, and mix them ultrasonically for 0.5 hours to obtain PEDOT:PSS:PEI composite ink.

[0091]2. The preparation process of the corresponding PEDOT:PSS:PEI composite film includes: coating the PEDOT:PSS:PEI composite ink on the base material by general methods such as spin coating and doctor blade coating, and forming the composite film after drying.

[0092] 3. The preparation process of the inverted device with PEDOT:PSS:PEI composite film as the cathode modification layer includes: the structure of the inverted device includes ITO cathode, PEDOT:PSS:PEI composite...

Embodiment 2

[0093] Example 2: Preparation of PEDOT:PSS:PEI composite with ammonia as a stabilizer and its application in organic solar cells as a cathode interface layer

[0094] The PEDOT:PSS:PEI composite film provided in Example 1 has shown the advantage of adjustable work function, but the stability of this type of ink is not ideal, and it will appear delamination after being placed in the air for several hours. In Example 2, on the basis of Example 1, ammonia water is introduced as the stabilizer of the ink. On the basis of retaining the adjustable work function of the composite ink, a stable composite ink that can be placed for a long time is obtained. The following are the specific details of this embodiment:

[0095] (1) Configuration of PEI ink containing ammonia water stabilizer: take 5 mg of PEI in 1 mL of deionized water, and stir magnetically for 2 hours to obtain a PEI solution. Add 200 microliters of 40% ammonia water to 1 mL of PEI solution, and then magnetically stir for...

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Abstract

The invention discloses a polymer composite material with an adjustable work function, and a preparation method and application thereof. The polymer composite material comprises at least one conductive polymer, at least one doping agent and at least one solvent which is used for cooperation with the other components of the composite material to form a uniform mixed system. The invention also discloses composite ink and a composite film based on the composite material, and preparation methods thereof. The polymer composite material, the composite ink and the composite film can be used for semiconductor devices with a photoelectric device as a representative. With the polymer composite material provided by the invention, the conductive composite film with a work function adjustable in a range of 4.0 to 5.2 eV can be formed, so the conductive composite film can be used as a modification layer for a positive electrode and a negative electrode, improves interfacial contact performance between electrodes and a photoactive layer and allows a formed device to present lower dependence on film thickness; and thus, requirements on preparation processes for devices can be lowered, and the yield of devices can be increased.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a polymer composite material with adjustable work function, a composite ink, a composite film and applications thereof, belonging to the field of semiconductor photoelectric materials and photoelectric devices. Background technique [0002] Compared with inorganic semiconductor devices, new solution-processable optoelectronic devices based on organic semiconductor materials, such as: organic solar cells, perovskite solar cells, organic light-emitting diodes (OLEDs), etc., are low-cost, soft, and scalable. Area roll to roll production and other advantages. This type of new photoelectric conversion device is usually a sandwich multilayer structure, including anode, cathode, active layer, electrode modification layer, etc. Interface layer materials play a role in substrate planarization, work function modification, and device stability improvement in these optoelectronic devices. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D165/00C09D125/18C09D179/02C09D7/63C09D11/102C09D11/03C09D11/30C08L65/00C08L25/18C08L79/02C08J5/18H01L51/46H01L51/54
CPCY02E10/549Y02P70/50
Inventor 王杰骆群张连萍马昌期
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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