Efficient perovskite solar cell modified by double interface layers and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problem of single function of the interface layer, and achieve the effects of promoting extraction and transmission, high efficiency, and accelerating the pace of commercialization

Active Publication Date: 2021-07-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of the single function of the interface layer in the above-mentioned prior art, the present invention provides a high-efficiency perovskite solar cell modified with a double interface layer and a preparation method thereof, which utilizes the synergistic effect of the double interface layer to effectively improve the performance of the perovskite solar cell. efficiency and stability

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  • Efficient perovskite solar cell modified by double interface layers and preparation method thereof
  • Efficient perovskite solar cell modified by double interface layers and preparation method thereof
  • Efficient perovskite solar cell modified by double interface layers and preparation method thereof

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Embodiment 1

[0035] In this example, a high-efficiency perovskite solar cell (PMAI+QDs) modified with a double interface layer was prepared. The schematic diagram of the device structure is as follows figure 1 As shown, from bottom to top: ITO conductive glass (ITO), SnO 2 Electron transport layer (SnO 2 ), FA 1- x MA x PB 3 Perovskite light absorbing layer (Perovskite), PMAI layer (PMAI), CsPbBr 3 Quantum dots (CsPbBr 3 QDs), a hole transport layer (Spiro-OMeTAD), a metal electrode (Au); the preparation method specifically includes the following steps:

[0036] Step 1: Clean the substrate:

[0037] In this embodiment, ITO conductive glass is selected as the substrate, that is, indium-doped tin dioxide (SnO 2 :In);

[0038] First, use detergent and nano-sponge to clean the ITO conductive glass, and then rinse it several times with deionized water. After the final ITO conductive glass is blown dry with nitrogen, it is treated with oxygen plasma for 12 minutes to further remove th...

Embodiment 2

[0060] This embodiment prepares the efficient perovskite solar cell of double interfacial layer modification according to the step of embodiment 1, compares with embodiment 1, and difference is only in the process of preparing PMAI layer in step 4, the PMAI powder of 9mg is dissolved in 1mL In isopropanol, adjust to dissolve 1 mg of PMAI powder in 1 mL of isopropanol; other steps remain unchanged.

Embodiment 3

[0062] This embodiment prepares the efficient perovskite solar cell of double interfacial layer modification according to the step of embodiment 1, compares with embodiment 1, and difference is only in the process of preparing PMAI layer in step 4, the PMAI powder of 9mg is dissolved in 1mL In isopropanol, adjust to dissolve 15 mg of PMAI powder in 1 mL of isopropanol; other steps remain unchanged.

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Abstract

The invention provides an efficient perovskite solar cell modified by double interface layers. The efficient perovskite solar cell comprises transparent conductive glass, an electron transport layer, a perovskite absorption layer, a PMAI layer, CsPbBr3 quantum dots, a hole transport layer and a metal electrode which are sequentially arranged. The preparation method of the PMAI layer and the CsPbBr3 quantum dots comprises the following steps of: spin-coating a perovskite absorption layer with a PMAI solution of which the solvent is isopropanol and the concentration is 1-15 mg / mL to obtain the PMAI layer; and spin-coating the PMAI layer with a CsPbBr3 quantum dot solution of which the solvent is chlorobenzene and the concentration is 2-10 mg / mL, so as to obtain the CsPbBr3 quantum dots. According to the perovskite solar cell, the PMAI layer and the CsPbBr3 quantum dots are adopted as double interface layers to modify the perovskite absorption layer, the charge transmission performance of the interface is jointly improved through the synergistic effect of the PMAI layer and the CsPbBr3 quantum dots, and the efficient perovskite solar cell is achieved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a double interface layer modified high-efficiency perovskite solar cell and a preparation method thereof. Background technique [0002] New energy is the driving force of scientific development and an important strategy to solve energy shortage and environmental pollution. As a renewable clean energy, solar energy has the advantages of green environmental protection and abundant reserves, and has attracted much attention among many new energy sources. Solar cell technology is a key technology that directly converts solar energy into electrical energy. It can be roughly divided into three types: the first-generation silicon-based solar cells, the second-generation thin-film solar cells, and the third-generation new solar cells that are currently being developed. The third generation of new solar cells such as quantum dot solar cells, organic solar cells and perovs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K85/60H10K30/15H10K2102/00Y02E10/549
Inventor 刘明侦曾成松曾鹏赵海峰李发明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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