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Organic solar battery and preparation method thereof

A solar cell, organic technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of expensive preparation, reduced device stability, substrate corrosion, etc., and achieves simple process, stable performance, and high conversion efficiency. Effect

Active Publication Date: 2013-06-12
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PEDOT:PSS is corrosive to the substrate, which reduces the stability of the device, and the preparation of MoO3 is relatively expensive. To solve these problems, we propose a method for preparing organic photovoltaic cells based on cheap, stable and efficient copper sulfide. plan

Method used

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preparation example Construction

[0041] 2 Preparation of hole transport layer CuS thin film

[0042] (1) Put the metal copper target and the clean conductive glass substrate into the corresponding positions in the deposition chamber, adjust the position of the sample holder to align with the target surface and keep an appropriate distance.

[0043] (2) Vacuum the vacuum system. Turn on the cooling water first. Turn on the mechanical pump to draw a low vacuum. When the vacuum degree of the system is lower than 10Pa, turn on the molecular pump to draw a high vacuum until the system vacuum degree is better than 1×10 -3 Pa.

[0044] (3) Feed an appropriate amount of high-purity argon into the deposition chamber to make the argon pressure reach the required deposition pressure.

[0045] (4) Adopt general radio frequency planar magnetron sputtering process. High-purity argon is used as the sputtering and reaction gas, without oxygen in the whole process 。During sputtering, the contrast temperature was chang...

Embodiment 1

[0056] (1) Clean the FTO conductive glass: first put the conductive glass slide into a solution containing a detergent (such as Liby brand liquid detergent) and soak for 10 minutes, then scrub it repeatedly and rinse it with clean water; then use polishing powder to clean it. Polishing treatment; then put them into containers containing deionized water, acetone and alcohol and ultrasonically for 10 minutes respectively; finally put them into deionized water to rinse twice, blow dry with a nitrogen gun and put them in an oven at 80 degrees Celsius to eliminate stress.

[0057] (2) Formulation of the organic photosensitive layer: Weigh 20.0 mg of P3HT and 20.0 mg of PCBM with an electronic balance. After mixing, dissolve it in 1.0 mL of chlorobenzene. Then put it on a temperature-controlled magnetic stirrer and stir at 40°C for 24 hours.

[0058] (3) In an inert gas-protected gas box, a layer of P3HT:PCBM with a thickness of about 100 nm was thrown on the FTO substrate by the ...

Embodiment 2

[0063] (1) Clean the FTO conductive glass sheet, the same as in Example 1.

[0064] (2) Sputtering Cu thin film: Put the copper target and substrate into the magnetron sputtering equipment, and sputter with radio frequency power supply. The working conditions are: background vacuum: 3×10 -4 Pa; argon gas flow rate of 12 sccm (standard condition milliliters per minute); substrate temperature: 60°C, sputtering pressure: 1.0 Pa, sputtering power at 60W, and sputtering time of 5 s. The FTO glass substrate coated with Cu film was obtained.

[0065] (3) Preparation of CuS thin film: Put Cu-coated FTO glass into a 100ml polytetrafluoroethylene autoclave, add 0.03g of sulfur powder and 70ml of absolute ethanol successively. Place the reaction kettle in a constant temperature oven at 90°C for 6 hours and take it out. The samples were rinsed several times with absolute ethanol and deionized water successively, and dried at 60°C for later use.

[0066] (4) The formula of the organic...

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Abstract

The invention relates to an organic solar battery and a preparation method thereof, taking CuS as a hole transport layer. The organic solar battery comprises a transparent conductive substrate, a CuS hole transport layer, an organic active layer, an electron transport layer and metal electrodes. The CuS hole transport layer is a thin film formed in a way that a copper thin film is obtained through magnetron sputtering, and then the copper thin film and powdered sulfur are subjected to in-situ hydrothermal growth. The CuS prepared by the magnetron sputtering and a hydrothermal reaction method is used as the hole transport layer of the organic solar battery, and compared with the energy conversion efficiency of an organic inorganic hybridized solar battery without the CuS hole transport layer, the energy conversion efficiency of the organic solar battery with the CuS hole transport layer is generally improved. Compared with a PEDOT:PSS (poly-ethylenedioxythiophene : p-styrene sulfonate) hole transport layer, the CuS avoids the erosion effect on the conductive substrate, and the stability is enhanced. The organic battery photovoltaic feature, taking the CuS as the hole transport layer, can be on a par with the battery property, taking MoO3 as the hole transport layer, and further, the organic solar battery is lower in cost and is more practical.

Description

[0001] technical field [0002] The invention relates to an organic solar battery and a preparation method thereof, belonging to the field of thin film materials and devices, and also to the field of new energy materials. Background technique [0003] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. Solar cells based on the photovoltaic effect are the mainstream. This type of battery converts solar energy into electrical energy. When light irradiates the battery, a part of the light will be absorbed by the semiconductor, and then converted into electron energy. Under the action of the internal electric field of the photovoltaic cell, free electrons flow in a directional way, and the current can be drawn out to the external circuit through the electrodes. . [0004] According to the different materials used, solar cells can be divided into: inorganic solar cells, organic solar cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549Y02P70/50
Inventor 方国家雷红伟黄晖辉柯维俊程飞
Owner WUHAN UNIV
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