Alcohol-soluble conjugate organic micromolecular material for cathode interface of solar cell, and preparation method and purpose thereof

A technology of interface material and cathode interface layer, applied in the field of solar cell materials, can solve the problems of increasing device manufacturing cost and unfavorable preparation of flexible devices

Inactive Publication Date: 2013-11-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these cathode interface materials usually require vacuum evaporation, which will increase the manufacturing cost of the device and is not conducive to the preparation of large-area flexible devices.

Method used

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  • Alcohol-soluble conjugate organic micromolecular material for cathode interface of solar cell, and preparation method and purpose thereof
  • Alcohol-soluble conjugate organic micromolecular material for cathode interface of solar cell, and preparation method and purpose thereof
  • Alcohol-soluble conjugate organic micromolecular material for cathode interface of solar cell, and preparation method and purpose thereof

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preparation example Construction

[0173] The film can optionally be prepared by conventional techniques in the art, such as spin coating, doctor blade, printing and other processes. In a preferred example of the present invention, the preparation method of the film comprises the following steps:

[0174] providing a solution in which the compound of formula I is dissolved; and

[0175] A surface is provided on which the solution is film-formed.

[0176] In another preferred embodiment, the solution is prepared by dissolving the compound of formula I in an organic solvent. The organic solvent is preferably an alcohol solvent, including (but not limited to): methanol, ethanol, or a combination thereof; more preferably, the organic solvent is methanol.

[0177] The surface type is not particularly limited, and can be the surface of any product, such as the surface of organic solar cell electrodes, organic light emitting diodes, organic field effect transistor electrodes and other product surfaces.

[0178] In ...

Embodiment 1

[0224] The synthesis of embodiment 1FPF-N

[0225]

[0226] The preparation method of FPF-N includes the following steps (1) to (3):

[0227] (1) Synthesis of 9,9-bis(2-N,N-dimethylaminoethyl)-2-bromofluorene:

[0228]

[0229] Under nitrogen protection, add 2-bromofluorene (7.35g, 30mmol), N,N-dimethyl-2-chloroethylamine hydrochloride (17.28g, 120mmol) and potassium hydroxide in addition to oxygen to a 500mL two-necked flask Aqueous solution (120mL, 50%) and toluene (100mL) were heated to 85°C for 12 hours. After the reaction, cool to room temperature, add water, extract with dichloromethane, combine the organic phases, wash with saturated brine and water successively, dry over anhydrous sodium sulfate, filter, and remove the organic solvent by rotary evaporation. The solid was separated by silica gel column chromatography using dichloromethane:methanol:triethylamine (V:V:V=10:1:0.1) as the eluent to obtain a white solid 9,9-bis(2-N,N- Dimethylaminoethyl)-2-bromofluo...

Embodiment 2

[0239] The synthesis of embodiment 2FBF-N

[0240]

[0241] The preparation method of FBF-N includes the following steps (1) to (3):

[0242] (1) Synthesis of 9,9-bis(2-N,N-dimethylaminoethyl)-2-bromofluorene:

[0243] The synthesis process is detailed in step (1) in Example 1.

[0244] (2) Synthesis of 9,9-bis(2-N,N-dimethylaminoethyl)-2-fluorene-pinacol borate:

[0245] The synthesis process is detailed in step (2) in Example 1.

[0246] (3) Synthesis of FBF-N:

[0247]

[0248] Add 4,7-dibromobenzo[c][1,2,5]thiadiazole (0.29g, 1mmol), 9,9-bis(2-N,N-dimethylamino Ethyl)-2-fluorene-pinacol borate (1.74g, 4mmol), potassium carbonate (2.72g, 20mmol) and tetrakistriphenylphosphopalladium (34mg, 0.03mmol), pump nitrogen three times, add Peroxygenated toluene and water were refluxed for 24 hours under the protection of nitrogen. After the reaction, cool to room temperature, extract with dichloromethane, combine organic phases, wash with saturated brine and water succes...

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Abstract

The invention discloses an alcohol-soluble conjugate organic micromolecular material for a cathode interface of a solar cell, and a preparation method and purpose thereof. Specifically, the invention provides a compound shown as a formula I; and the groups are defined as in the specification. The material has the characteristics of clear structure, simple synthesis, easiness for purification and good dissolvability, can be used as the cathode interface modification material for solar cell devices, and has superior performances.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, and relates to a preparation method and application of an organic solar cell interface material, in particular to a preparation method and application of an alcohol-soluble conjugated organic small molecule solar cell cathode interface material. Background technique [0002] Organic solar cells are a new type of solar cells, which have the advantages of diverse chemical structures, roll-to-roll large-area production, flexibility, lightness, and relatively low cost. One of them has important development and application prospects. [0003] A solar cell has a sandwich structure, namely electrodes and an active layer. Adding an interface layer between the electrode and the active layer can make good ohmic contact between the electrode and the active layer, reduce the contact resistance and enhance the collection of carriers. By adding low work function metals, metal oxides or salts as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/31C07C209/68C07D285/14C07D417/14C07F5/04H01L51/46
CPCY02E10/549Y02P70/50
Inventor 方俊锋张文俊吴玉雷张曲闵超李晓冬刘菁
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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