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A kind of perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems affecting the photoelectric conversion efficiency, life and stability of cells, restricting the commercial development of perovskite cells, poor device stability and Repeatability and other issues, to achieve the effect of large-area thin film preparation, improved interface hole transport efficiency, and improved interface characteristics

Active Publication Date: 2022-05-10
西安纳智光研科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the many synthesis steps, high cost, and low intrinsic conductivity and mobility of this type of material, when applied to battery devices, in order to obtain high photoelectric conversion efficiency, it is necessary to add materials such as bistrifluoromethylsulfonimide Lithium Li-TFSI, tert-butylpyridine tBP, FK209-Co(III)-TFSI cobalt salt and other P-type additives are used to oxidize spiro-OMeTAD to generate free carriers to improve its conductivity and mobility
[0004] However, such additives have strong hygroscopicity on the one hand, and are easy to absorb water molecules to corrode the perovskite layer and the hole transport layer; on the other hand, the oxidation reaction of lithium salts to spiro-OMeTAD mainly depends on light and oxygen in the environment. , which results in poor stability and reproducibility of the device; in addition, tert-butylpyridine is a Lewis base, which will interact with PbI 2 The reaction forms a complex and destroys the crystal structure of the perovskite
It can be seen that the use of p-type additives will not only affect the photoelectric conversion efficiency, life and stability of the battery, but also increase the cost of device preparation and the complexity of the process, which restricts the commercial development of perovskite batteries.

Method used

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  • A kind of perovskite solar cell and preparation method thereof
  • A kind of perovskite solar cell and preparation method thereof
  • A kind of perovskite solar cell and preparation method thereof

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Embodiment 1

[0045] See figure 1 , figure 1 It is a flow chart of a method for preparing a perovskite solar cell provided by an embodiment of the present invention; including:

[0046] (a) select the substrate substrate and perform pretreatment; wherein, the substrate substrate is provided with a cathode electrode;

[0047] In this embodiment, the substrate may be any one of glass, quartz, flexible PET or flexible PEN, so that incident light enters the device from the side of the substrate. Specifically, step (a) includes:

[0048] (a1) selecting a substrate substrate with a metal oxide thin film electrode;

[0049] Specifically, the metal oxide thin film electrode can be any one of fluorine-doped tin oxide FTO, tin-doped indium oxide ITO or aluminum-doped zinc oxide AZO, which is set as the cathode electrode on the other side of the substrate where the incident light , for collecting electrons.

[0050] (a2) Ultrasonic cleaning the substrate substrate with cleaning agent, deionized w...

Embodiment 2

[0085] In the following, the prepared substrate is a glass substrate with fluorine-doped tin oxide FTO, and the electron transport layer is SnO 2 , the perovskite light-absorbing layer is MA 0.7 FA 0.3 PB 3-x Cl x and unadulterated The preparation method of the present invention will be described in detail by taking a perovskite solar cell whose Base derivative organic hole transport layer is TBBN1 as an example. See Figure 4a-4e , Figure 4a-4e It is a schematic diagram of the preparation method of the perovskite solar cell provided by the embodiment of the present invention, including:

[0086] Step 1: Select the substrate substrate and perform pretreatment;

[0087] Specifically, the glass substrate 1 with fluorine-doped tin oxide FTO is selected as the substrate substrate, such as Figure 4a Shown; where fluorine-doped tin oxide FTO is used as the cathode electrode 2;

[0088] The FTO with fluorine-doped tin oxide was placed in cleaning agent, deionized water a...

Embodiment 3

[0109] In the following, the prepared substrate substrate is a glass substrate with tin-doped indium oxide ITO, and the electron transport layer is TiO 2 , The perovskite light absorbing layer is MAPbI 3 and unadulterated The preparation method of the present invention will be described in detail by taking a perovskite solar cell whose base derivative organic hole transport layer is TBBN2 as an example.

[0110] Step 1: Select the substrate substrate and perform pretreatment;

[0111] Specifically, a glass substrate with tin-doped indium oxide ITO is selected as the substrate substrate, wherein the tin-doped indium oxide ITO is used as the cathode electrode;

[0112] The glass substrate with tin-doped indium oxide ITO was placed in cleaning agent, deionized water and absolute ethanol in order to ultrasonically clean it for 30 minutes respectively. After cleaning, it was dried with a nitrogen gun and placed in ultraviolet ozone (UV-Ozone) Medium pretreatment 20min.

[0113...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof, comprising: (a) selecting a substrate substrate and performing pretreatment; wherein, the substrate substrate is provided with a cathode electrode; (b) growing an electron transport layer on the substrate; (c) preparing a perovskite light-absorbing layer on the electron transport layer; (d) depositing a Base derivative organic hole transport material on the perovskite light-absorbing layer to form A hole transport layer; (e) making an anode on the hole transport layer to complete the preparation of the perovskite solar cell. The solar cell disclosed by the invention has simple process and low cost; at the same time, the prepared solar cell has high conversion rate and stability.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] With the development of human society, its demand and consumption of energy are increasing day by day. Traditional energy sources such as coal, oil and natural gas not only cause serious environmental pollution, but also cause a great crisis in energy supply. In order to ensure the survival and development of human beings, it is imperative to seek green and sustainable energy sources. Directly converting solar energy into electricity or other forms of energy is becoming a very important way to gradually replace fossil fuels. In recent years, organic-inorganic perovskite solar cells have rapidly developed into the forefront of emerging photovoltaic technologies due to their high photoelectric conversion efficiency and large-area flexible preparation. Solar battery. At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/631H10K85/6572H10K30/15H10K30/151Y02E10/549Y02P70/50
Inventor 习鹤朱伟佳张春福吕玲曹艳荣
Owner 西安纳智光研科技有限公司