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Flexible perovskite solar energy cell blade coating preparation method

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems that restrict the large-scale use of perovskite solar cells, the brittleness of glass substrates, and the limitation of perovskite, and achieve green The effect of low production and equipment requirements and easy operation

Active Publication Date: 2017-10-20
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a huge limitation for the future mass production of perovskites
The current technology generally uses glass conductive substrates, but the glass substrate is brittle and cannot be bent, which brings restrictions to the preparation of later functional layers, and also seriously restricts the large-scale use of perovskite solar cells.

Method used

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  • Flexible perovskite solar energy cell blade coating preparation method
  • Flexible perovskite solar energy cell blade coating preparation method
  • Flexible perovskite solar energy cell blade coating preparation method

Examples

Experimental program
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Embodiment 1

[0055] This embodiment provides a method for preparing a flexible perovskite solar cell by scraping coating. Specifically, a hole transport layer is first coated on a flexible substrate, and then a perovskite layer is coated on the basis of the hole transport layer as a photosensitive layer. , and then coat the electron transport layer on the perovskite layer, and finally vapor-deposit metal electrodes.

[0056] The structural schematic diagram of the flexible perovskite solar cell of this embodiment can be found in figure 1 .

[0057] preparation:

[0058] (1) On a flexible conductive substrate (1.5cm×1.5cm), 35 μL of the precursor solution of the hole transport layer ((PEDOT:PSS), PSSA and isopropanol were mixed at a mass ratio of 1:0.25:3 to obtain a mixture solution), and then annealed at 110° C. for 15 minutes to prepare a hole transport layer on a flexible conductive substrate;

[0059] Among them, when scraping, the flexible conductive substrate is heated at 60°C, th...

Embodiment 2

[0066] This embodiment provides a method for preparing a flexible perovskite solar cell by scraping coating. Specifically, an electron transport layer is coated on a flexible substrate, and then a perovskite layer is coated on the basis of the electron transport layer as a photosensitive layer, and then the A hole transport layer is coated on the perovskite layer, and finally a metal electrode is evaporated.

[0067] The structural schematic diagram of the flexible perovskite solar cell of this embodiment can be found in figure 2 .

[0068] (1) Scrape-coat 50 μl of electron transport layer solution (chlorobenzene solution of PCBM, concentration: 5 mg / ml) on a flexible conductive substrate (2cm×2cm), and then let it stand for 50 minutes to dry, thereby preparing electrons on a flexible conductive substrate. For the transport layer, select an area with uniform film formation and proceed to the subsequent steps;

[0069] Among them, when scraping, the temperature of the flexib...

Embodiment 3

[0076] This embodiment provides a method for preparing a flexible perovskite solar cell by scraping coating. Specifically, a hole transport layer is first coated on a flexible substrate, and then a perovskite layer is coated on the basis of the hole transport layer as a photosensitive layer. , then coat the electron transport layer on the perovskite layer, and finally print the carbon electrode.

[0077] The structural schematic diagram of the flexible perovskite solar cell of this embodiment can be found in image 3 .

[0078] (1) Scrape-coat 30 μL of the precursor solution of the hole transport layer (a mixed solution of (PEDOT:PSS), PSSA and isopropanol at a mass ratio of 1:0.5:4) on a flexible conductive substrate (3cm×3cm) , and then annealed at 120°C for 18 minutes to prepare a hole transport layer on a flexible conductive substrate, select a region with uniform film formation, and proceed to the subsequent steps;

[0079] Among them, when scraping, the flexible conduc...

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Abstract

The present invention discloses a flexible perovskite solar energy cell blade coating preparation method. The method comprises the following steps: employing a blade coating method to prepare a cavity transmission layer, a perovskite layer and an electron transmission layer on a flexible conductive substrate. The method is simple in preparation technology, low in design requirement, and the blade coating method is employed to save the cost and realize green production to the greatest extent. Lead source is limited as lead acetate, the parameters such as temperature of blade coating solution, the temperature of the flexible conductive substrate or a composite substrate (the composite substrate of the flexible conductive substrate, the cavity transmission layer and / or the electron transmission layer) the blade coating speed and the blade height are regulated to effectively prepare high-quality flexible perovskite solar cell in the air; and moreover, the flexible substrate replaces a traditional glass substrate to realize flexibility of the perovskite solar cell, widen the application range of the perovskite solar cell and open the door of the perovskite solar cell moving towards to the marketization.

Description

technical field [0001] The invention belongs to the related field of energy material technology, and relates to a method for preparing a flexible perovskite solar cell, in particular to a method for preparing a flexible perovskite solar cell by scraping coating. Background technique [0002] Perovskite solar cells are a new type of solar cells evolved from dye-sensitized solar cells. When exposed to sunlight, the perovskite layer first absorbs photons to generate electron-hole pairs. Due to the difference in the binding energy of excitons in perovskite materials, these carriers either become free carriers or form excitons. Then, these unrecombined electrons and holes are collected respectively by the electron transport layer and the hole transport layer, that is, the electrons are transported from the perovskite layer to the electron transport layer, and finally collected by the conductive substrate; the holes are transported from the perovskite layer to the hole The trans...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/00
CPCH10K71/12H10K77/111H10K30/40H10K30/50Y02E10/549H10K85/50
Inventor 高集舒徐保民胡杭陈佳邦刘畅武建昌
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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