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Perovskite solar cell, preparation method thereof and photovoltaic system

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems affecting cell efficiency, cell damage, etc., and achieve the effects of reducing efficiency loss, preventing damage, and increasing open circuit voltage

Pending Publication Date: 2022-07-01
ZHEJIANG AIKO SOLAR ENERGY TECH CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a method for preparing a perovskite solar cell, which aims to solve the problem that the damage to the cell caused by laser scribing in the existing large-area perovskite cell affects the efficiency of the cell

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  • Perovskite solar cell, preparation method thereof and photovoltaic system
  • Perovskite solar cell, preparation method thereof and photovoltaic system

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Embodiment 1

[0047] see figure 1 and figure 2 , figure 1 This is a schematic diagram of the structure of the perovskite solar cell provided by the first embodiment of the present invention. For the convenience of description, only the part related to the embodiment of the present invention is shown.

[0048] The perovskite solar cell provided by the embodiment of the present invention includes a glass substrate 1, a transparent conductive film layer 2, a hole transport layer 4, a perovskite light absorption layer 5, an electron transport layer 6 and a metal electrode, which are arranged in order from bottom to top. 7;

[0049]The perovskite solar cell further includes a first groove 8, a second groove 9 and a ferroelectric insulating layer 3 arranged at intervals; the ferroelectric insulating layer 3 penetrates through the hole transport layer 4 and the perovskite light absorption layer 5. Electron transport layer 6 and metal electrode 7 .

[0050] Further, the ferroelectric insulatin...

Embodiment 2

[0068] The second embodiment of the present invention provides a method for preparing a perovskite solar cell. The preparation method is used to prepare the perovskite solar cell in the foregoing embodiment. Specifically, the method includes the following steps:

[0069] Step S11: depositing a transparent conductive film layer 2 on the glass substrate 1;

[0070] In the embodiment of the present invention, before depositing the transparent conductive film layer 2 on the transparent glass substrate 1, the glass substrate is cleaned first. Specifically, using ITO conductive glass with high transmittance as the transparent conductive substrate, first wipe the surface of the ITO substrate with dust-free paper dipped in ethanol, then ultrasonically clean it with detergent, deionized water, acetone, and ethanol in sequence for 15-20 minutes, and finally Dry in a vented oven. Among them, the ITO conductive glass is fabricated by coating a layer of indium tin oxide (commonly known as...

Embodiment 3

[0097] The third embodiment of the present invention further provides a photovoltaic system, including the perovskite solar cell, the inverter, the battery pack and the controller as in the previous embodiments.

[0098] In this embodiment, the working principle of the photovoltaic system is as follows: the perovskite solar cell generates a certain electromotive force under the action of illumination, and the solar cell square array is formed through the series connection of the components, so that the square array voltage meets the requirement of the system input voltage. The battery pack is charged through the controller, and the electrical energy converted from light energy is stored. The battery pack provides the input current for the inverter, and converts the direct current into alternating current through the inverter, and inputs it to the power distribution cabinet, and the power distribution cabinet supplies power.

[0099] The photovoltaic system in this embodiment g...

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Abstract

The invention is suitable for the technical field of perovskite solar cells, and provides a perovskite solar cell, a preparation method of the perovskite solar cell, and a photovoltaic system. A third laser scribing process is replaced by depositing a ferroelectric insulating layer penetrating through a hole transport layer, a perovskite light absorption layer, an electron transport layer and a metal electrode on a transparent conductive film layer to complete segmentation of the perovskite solar cell, so that on one hand, damage of laser scribing to the perovskite solar cell can be prevented; the efficiency loss of the perovskite solar cell is reduced; on the other hand, field passivation is carried out on the perovskite pin junction through ferroelectric polarization, so that a built-in field of the perovskite material is enhanced, separation and transmission of photo-induced electron-hole pairs are promoted, splitting of quasi-Fermi energy levels of electrons and holes in the perovskite pin junction is intensified, the open-circuit voltage of the cell is further improved, and the performance of the cell is improved. And finally, the photoelectric conversion efficiency of the perovskite cell is improved.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a perovskite solar cell, a preparation method thereof, and a photovoltaic system. Background technique [0002] Perovskite solar cells have excellent optoelectronic properties due to their tunable band gap, high light absorption coefficient, long carrier lifetime and diffusion length, high defect tolerance, and low-cost low-temperature liquid phase preparation methods. received widespread attention. The efficiency of laboratory-fabricated photovoltaic devices has soared from 3.8% in 2009 to 25.5% in 2021 in just a dozen years, and is considered a strong contender for next-generation novel photovoltaic materials. [0003] Upright structure planar heterostructure (nip-type) perovskite cells have always been a research hotspot in the field of perovskite photovoltaics due to their simple fabrication process and high photoelectric conversion efficiency. However, perovskite cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/15H10K30/40H10K30/88
Inventor 何嘉伟陈刚
Owner ZHEJIANG AIKO SOLAR ENERGY TECH CO LTD