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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AI-Extracted 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 reduc...

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.

Application Domain

Final product manufactureSolid-state devices +3

Technology Topic

ChemistryElectrically conductive +8

Image

Examples

Experimental program(4)
Comparison scheme(4)

Example Embodiment

[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 electrodes, that is, the structure of the solar cell, the battery is shown.figure 1 Down B.

[0055]Fill N2AAA level solar simulator AM1.5G in the glove box AM1.5G at 100MW / cm2The intensity test the current - voltage curve of the prepared solar cell. The solar simulator described above uses the US NewPort certified silicon battery for correction.

[0056]The test results of the solar cell based on the present embodiment areimage 3 The curve C is shown, its open circuit voltage, short circuit current, filling factor, energy conversion efficiency are 0.86V, 22.3mA / cm, respectively.20.72, 13.9%. It can be seen that the OSC of the PVP cathode interface layer prepared using adsorption method has an energy conversion efficiency equivalent to OSC of the PVP cathode interface layer prepared using a spin coating.

Example Embodiment

[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 electrodes, that is, the structure of the solar cell, the battery is shown.figure 1 Down Down.

[0072]Fill N2AAA level solar simulator AM1.5G in the glove box AM1.5G at 100MW / cm2The intensity test the current - voltage curve of the prepared solar cell. The solar simulator described above uses the US NewPort certified silicon battery for correction.

[0073]The test results of the solar cell based on the present embodiment areFigure 4 Curve C,Figure 5 Medium curve A,Figure 6According to the medium curve C, its open circuit voltage, short circuit current, filling factor, energy conversion efficiency are 0.84V, 21.7mA / cm, respectively.20.73, 13.3%. It can be seen that the OSC of the PVP cathode interface layer prepared using adsorption method has an energy conversion efficiency equivalent to an OSC of the PVP cathode interface layer using a spin coating method.

Example Embodiment

[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 aluminum electrodes, that is, the structure of the solar cell, the battery is shown.figure 1 Down Down.

[0078]Fill N2AAA level solar simulator AM1.5G in the glove box AM1.5G at 100MW / cm2The intensity test the current - voltage curve of the prepared solar cell. The solar simulator described above uses the US NewPort certified silicon battery for correction.

[0079]The test results of the solar cell based on the present embodiment areFigure 5 The curve B is shown, its open circuit voltage, short circuit current, filling factor, energy conversion efficiency are 0.84V, 21.6mA / cm, respectively20.73, 13.2%. The test results of the solar cell of PVP based on the adsorption time of 2s in Example 2 areFigure 5 The curve A is shown, its open circuit voltage, short circuit current, filling factor, energy conversion efficiency are 0.84V, 21.7mA / cm, respectively.20.73, 13.3%. It can be seen that the PVP cathode boundary layer prepared by adsorption method has little effect on the performance of the PVP adsorption time in OSC.

PUM

Property	Measurement	Unit
Concentration	0.001 ~ 20.0	mg/ml
Concentration	0.05	mg/ml

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