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Polyvinylpyrrolidone cathode interface layer prepared by adsorption method and its application

A polyvinylpyrrolidone and cathode interface layer technology, which can be used in final product manufacturing, sustainable manufacturing/processing, semiconductor/solid-state device manufacturing, etc., and can solve problems such as affecting the photoelectric conversion ability of the device, affecting the performance of OSC, and reducing the luminous flux of the active layer.

Active Publication Date: 2021-06-01
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this technology, the film thickness is mainly limited by the active layer material, which enables the use of film thickness-sensitive interfacial layer materials
However, both methods have certain limitations
For example, the doped interface layer material will absorb light in the long-wave direction, thereby reducing the luminous flux entering the active layer, and ultimately affecting the photoelectric conversion capability of the device.
In the one-step method of preparing the interface layer and active layer, the interface layer material will remain in the active layer to form traps, which will affect the performance of OSC.

Method used

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  • Polyvinylpyrrolidone cathode interface layer prepared by adsorption method and its application
  • Polyvinylpyrrolidone cathode interface layer prepared by adsorption method and its application
  • Polyvinylpyrrolidone cathode interface layer prepared by adsorption method and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]Example 1 Preparation of solar cells based on PBDB-TCL and using a PVP cathode interface layer (adsorption method)

[0051]0.05 mg of polyvinylpyrrolidone (molecular weight is 360000; the molecular weight distribution index is 1 to 50) to 1 ml of chlorobenzene, stirred and dissolved, i.e., PVP solution.

[0052]10 mg of PBDB-TCl was added to 1 ml of chlorobenzene with 10 mg of IT-4F, and stirred at 40 ° C for 8 h, then 0.5 ml of the PVP solution and 0.5 mL of diiododeane, continued at 40 ° C for 30 min, i.e., to obtain an active layer solution.

[0053]The glass covering the ITO was completely immersed in the above PVP solution, and after standing for 2 s, the adhering solution was absorbed, and the residual solution was blown with a drying paper, and the PVP cathode interface layer was obtained.

[0054]Then, the active layer solution was spinned and 10 min was taken at 100 ° C. Finally, approximately 10-4The pressure of the PA is deposited by 10 nm molybdenum oxide and 100 nm aluminum e...

Embodiment 2

[0067]Example 2 Preparation of solar cells based on PBDB-TF and using a PVP cathode interface layer (adsorption method)

[0068]0.05 mg of polyvinylpyrrolidone (molecular weight is 360000; the molecular weight distribution index is 1 to 50) to 1 ml of chlorobenzene, stirred and dissolved, i.e., PVP solution.

[0069]10 mg of PBDB-TF was added to 1 ml of chlorobenzene with 10 mg of IT-4F, and stirred at 40 ° C for 8 h, then 0.5 mL of the above PVP solution and 0.5 ml of diiododeane, continued at 40 ° C for 30 min, i.e., the active layer solution.

[0070]The glass covering the ITO was completely immersed in the above PVP solution, and after standing for 2 s, the adhering solution was absorbed, and the residual solution was blown with a drying paper, and the PVP cathode interface layer was obtained.

[0071]Then, the active layer solution was spinned and 10 min was taken at 100 ° C. Finally, approximately 10-4The pressure of the PA is deposited by 10 nm molybdenum oxide and 100 nm aluminum electr...

Embodiment 3

[0074]Example 3, Preparation of solar cells of the PVP cathode interface layer using a longer adsorption time

[0075]0.05 mg of polyvinylpyrrolidone (molecular weight is 360000; the molecular weight distribution index is 1 to 50) to 1 ml of chlorobenzene, stirred and dissolved, i.e., PVP solution. 10 mg of PBDB-TF was added to 1 ml of chlorobenzene with 10 mg of IT-4F, and stirred at 40 ° C for 8 h, then 0.5 mL of the above PVP solution and 0.5 ml of diiododeane, continued at 40 ° C for 30 min, i.e., the active layer solution.

[0076]The glass covering the ITO was completely immersed in the above PVP solution, and then taken out after standing for 15 h, and the adhering solution was absorbed with a dust-free paper, and the residual solution was blown with a flap to obtain a PVP cathode interface layer.

[0077]Then, the active layer solution was spinned and 10 min was taken at 100 ° C. Finally, approximately 10-4The pressure of the PA is deposited by 10 nm molybdenum oxide and 100 nm alumi...

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Abstract

The invention discloses a polyvinylpyrrolidone cathode interface layer prepared by an adsorption method and its application. The method includes: immersing a substrate covered with a transparent conductive electrode in a polyvinylpyrrolidone solution, then taking it out and blowing it dry. In the invention, the substrate covered with the transparent cathode is immersed in the PVP solution, and the interaction force between the PVP molecules and the cathode molecules is utilized to obtain a uniform and continuous thin-layer PVP cathode interface layer without introducing traps in the active layer. The OSC of the PVP cathode interface layer prepared by this method has a photovoltaic efficiency comparable to the OSC of the PVP cathode interface layer prepared by the traditional method. The invention provides a method for preparing a PVP cathode interface layer by adopting an adsorption method, which is not limited by the PVP thickness resistance or printing technology, and is suitable for a large-area printing process.

Description

Technical field[0001]The present invention belongs to the field of organic solar cells, and specifically, a polyvinylpyrrolidone cathode interface layer and its application thereof prepared by adsorption.Background technique[0002]Organic Solar Battery (OSC) is a device with a layered nanostructure that converts solar energy into electrical energy. It is mainly composed of a substrate, a cathode, a cathode interface layer, an active layer, an anode interface layer, and an anode. In general, the active layer consists of an organic donor molecule and an organic receptor molecule, which is a major place where the solar energy is converted into electrical energy. In recent years, based on non-fullerene receptor materials and the development of corresponding donor materials, the energy conversion efficiency (PCE) of OSC has reached more than 13%, which greatly promotes the industrialization process of OSC.[0003]Compared to traditional inorganic solar cells, OSC has the advantage of using ...

Claims

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Application Information

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IPC IPC(8): H01L51/44H01L51/48
CPCH10K30/81Y02E10/549Y02P70/50
Inventor 侯剑辉杨蓓
Owner INST OF CHEM CHINESE ACAD OF SCI
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