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Preparation method of high-stability inorganic hole transport film capable of being produced on large scale

A technology of hole transport and high stability, applied in the field of preparation of highly stable inorganic hole transport films, can solve the problems of high energy consumption and complicated steps, and achieve the effects of low energy consumption, low cost and blocking electron injection

Pending Publication Date: 2021-02-02
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, a thin film with a certain thickness is obtained by repeating the pre-calcination process at 300-600°C for 3-5 times, and finally CuCrO is obtained at 800-1000°C for 1 hour. 2 Thin film, complicated steps and high energy consumption

Method used

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  • Preparation method of high-stability inorganic hole transport film capable of being produced on large scale
  • Preparation method of high-stability inorganic hole transport film capable of being produced on large scale
  • Preparation method of high-stability inorganic hole transport film capable of being produced on large scale

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Effect test

Embodiment 1

[0029] A method for preparing a highly stable inorganic hole transport thin film capable of large-scale production, comprising the following steps:

[0030] (1) Take 0.15mmol (0.0606g) ferric nitrate nonahydrate as iron source, 5mmol (1.2080g) copper nitrate trihydrate as copper source, 5mmol (2.0007g) chromium nitrate nonahydrate as chromium source, dissolve in 70ml to remove In deionized water, stir evenly, add 2.5g of sodium hydroxide, stir for 15 minutes, then transfer the mixed solution into a hydrothermal reaction kettle, and react at 230°C for 60h.

[0031] (2) Add dilute hydrochloric acid to the above product to adjust the pH of the solution to 7, then successively wash the product with deionized water and ethanol to remove impurities, and then disperse it in ethanol to obtain a concentration of 15 mg ml -1 Fe-CuCrO2 colloidal solution.

[0032] (3) Transfer the above colloidal solution to a spray gun, and spray it on the surface of the ITO conductive substrate prehea...

Embodiment 2

[0035] A method for preparing a highly stable inorganic hole transport thin film capable of large-scale production, comprising the following steps:

[0036] (1) Take 0.15mmol (0.0606g) ferric nitrate nonahydrate as iron source, 5mmol (1.2080g) copper nitrate trihydrate as copper source, 5mmol (2.0007g) chromium nitrate nonahydrate as chromium source, dissolve in 70ml to remove In deionized water, stir evenly, add 2.5g of sodium hydroxide, stir for 15 minutes, then transfer the mixed solution into a hydrothermal reaction kettle, and react at 230°C for 60h.

[0037] (2) Add dilute hydrochloric acid to the above product to adjust the pH of the solution to 7, then successively wash the product with deionized water and ethanol to remove impurities, and then disperse it in ethanol to obtain a concentration of 15 mg ml -1 Fe-CuCrO 2 colloidal solution.

[0038] (3) Transfer the above colloidal solution to a spray gun, and spray it on the surface of an ITO conductive substrate prehe...

Embodiment 3

[0041] A method for preparing a highly stable inorganic hole transport thin film capable of large-scale production, comprising the following steps:

[0042] (1) Take 0.15mmol (0.0606g) ferric nitrate nonahydrate as iron source, 5mmol (1.2080g) copper nitrate trihydrate as copper source, 5mmol (2.0007g) chromium nitrate nonahydrate as chromium source, dissolve in 70ml to remove In deionized water, stir evenly, add 2.5g of sodium hydroxide, stir for 15 minutes, then transfer the mixed solution into a hydrothermal reaction kettle, and react at 230°C for 60h.

[0043] (2) Add dilute hydrochloric acid to the above product to adjust the pH of the solution to 7, then successively wash the product with deionized water and ethanol to remove impurities, and then disperse it in ethanol to obtain a concentration of 15 mg ml -1 Fe-CuCrO 2 colloidal solution.

[0044] (3) Transfer the above colloidal solution to a spray gun, and spray it on the surface of the ITO conductive substrate preh...

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Abstract

The invention relates to a preparation method of a high-stability inorganic hole transport film capable of realizing large-scale production, which comprises the following steps of (1) dissolving a bivalent copper source, a trivalent iron source and a trivalent chromium source in deionized water, uniformly stirring, adding an alkali source, stirring for 15-30 minutes, and transferring the mixed solution into a reaction kettle to perform hydrothermal reaction, (2) adding diluted hydrochloric acid into the product obtained in the step (1) to adjust the pH value of the solution to 6.5-7.5, then centrifugally cleaning the product with deionized water and ethanol in sequence, and dispersing the cleaned product into an alcohol organic solvent to prepare a Fe-CuCrO2 colloidal solution, and (3) transferring the colloidal solution obtained in the step (2) into a spray gun, spraying the colloidal solution on the surface of a preheated conductive substrate, controlling the spraying time to obtainfilms with different layer thicknesses, and heating and annealing to obtain the film. Compared with the prior art, the method has the advantages that the process is simple, raw materials are easy to obtain, the cost is low, the energy consumption is low, large-scale production can be achieved, the obtained Fe-CuCrO2 film is high in stability, the hole extraction rate can be increased, and meanwhile electron injection is effectively blocked.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a method for preparing a highly stable inorganic hole transport film capable of large-scale production. Background technique [0002] As the problem of energy shortage becomes more and more severe, people begin to look for new energy sources that can replace traditional energy sources, among which solar energy has become a hot spot of attention because of its inexhaustible advantages. In recent years, under the background of continuous pursuit of high-efficiency and low-cost solar cells, a solar cell based on organic-inorganic hybrid perovskite materials has emerged, and its photoelectric conversion efficiency has been rising steadily in a very short period of time. The perovskite material generates electron and hole pairs by absorbing sunlight, and under the action of the built-in electric field, the electron and hole pairs move to the two poles to generate a curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42B05D1/02B05D7/24B82Y10/00B82Y30/00B82Y40/00
CPCB05D7/24B05D1/02B82Y10/00B82Y30/00B82Y40/00H10K30/10Y02E10/549Y02P70/50
Inventor 芮一川王晓洁石江珊金作明
Owner SHANGHAI UNIV OF ENG SCI
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