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Perovskite layer, electron transport layer, perovskite solar cell preparation method and solar cell

A solar cell and electron transport layer technology, applied in the field of solar cells, can solve problems such as low electron mobility, many defects in the electron transport layer, and reduce device performance, so as to achieve high quality, improve the crystallization process, and reduce defects.

Pending Publication Date: 2021-11-09
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The initial electron transport layer prepared by common methods such as solution spin coating, spray pyrolysis, chemical bath, atomic deposition, etc. usually faces disadvantages such as more defects and lower electron mobility, thus reducing device performance

Method used

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  • Perovskite layer, electron transport layer, perovskite solar cell preparation method and solar cell
  • Perovskite layer, electron transport layer, perovskite solar cell preparation method and solar cell
  • Perovskite layer, electron transport layer, perovskite solar cell preparation method and solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0056] The control group is a device without ionic liquid modification, and the preparation method is the above-mentioned device preparation process. Experimental group 1 used ionic liquids to modify the electron transport layer. The specific process was: equipped with ionic liquids BMIMPF 6 The ionic liquid ethanol solution with a mass fraction of 0.01% was used as the modification solution of the electron transport layer, and the solution was spin-coated at 4000rpm on the SnO-coated layer. 2 layer on the FTO glass substrate and anneal at 80 °C for 5 min. Then the perovskite layer and the hole transport layer were spin-coated, and the Au electrode was evaporated to complete the device preparation. The photoelectric performance test is carried out on the device, and the current-voltage (J-V) test results are as follows: figure 2 Shown (experimental group 1).

Embodiment 2

[0058] The control group is a device without ionic liquid modification, and the preparation method is the above-mentioned device preparation process. Experimental group 2 uses ionic liquid to modify the electron transport layer. The specific process is: equip with ionic liquid BMIMPF 6 The ionic liquid ethanol solution with a mass fraction of 0.05% was used as the modification solution of the electron transport layer, and the solution was spin-coated at 4000rpm on the SnO-coated layer. 2 layer on the FTO glass substrate and anneal at 80 °C for 5 min. Then the perovskite layer and the hole transport layer were spin-coated, and the Au electrode was evaporated to complete the device preparation. The photoelectric performance test is carried out on the device, and the J-V test results are as follows: figure 2 Shown (experimental group 2).

Embodiment 3

[0060] The control group is a device without ionic liquid modification, and the preparation method is the above-mentioned device preparation process. Experimental group 3 uses ionic liquid to modify the electron transport layer. The specific process is: equip with ionic liquid BMIMPF 6 The ionic liquid ethanol solution with a mass fraction of 0.1% was used as the modification solution of the electron transport layer, and the solution was spin-coated at 4000rpm on the SnO-coated layer. 2 layer on the FTO glass substrate and anneal at 80 °C for 5 min. Then the perovskite layer and the hole transport layer were spin-coated, and the Au electrode was evaporated to complete the device preparation. The photoelectric performance test is carried out on the device, and the J-V test results are as follows: figure 2 Shown (experimental group 3).

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Abstract

The invention belongs to the technical field of solar cell materials, and particularly relates to a perovskite layer, an electron transport layer, a preparation method of a perovskite solar cell and the solar cell. BMIMPF6 is adopted as an interface layer to modify the electron transport layer, so that the electron mobility is improved, and the electron transport performance is further improved; and the BMIMPF6 is used as an additive to improve the morphology of the perovskite film, increase the grain size of the perovskite, reduce the internal defects of the film and achieve the purpose of improving the performance of the device.

Description

technical field [0001] The invention belongs to the field of solar cell materials and technologies, and in particular relates to a perovskite layer, an electron transport layer, a preparation method of a perovskite solar cell and a solar cell. Background technique [0002] In the past 10 years, perovskite solar cells have stimulated the research interest of many scholars. Perovskite semiconductor materials have many excellent properties, such as direct bandgap semiconductor, high light absorption coefficient, excellent carrier transport rate and so on. The photoelectric conversion efficiency of its single cell has increased from 3.8% reported for the first time in 2009 to the current 25.5%, and the photoelectric conversion efficiency of stacked cells combined with crystalline silicon solar cells has reached 29.5%. Such rapid development makes perovskite solar cells a strong contender for a new generation of commercial thin-film cells. [0003] The device composition of per...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCH10K71/12H10K71/40H10K30/15H10K2102/00Y02E10/549Y02P70/50
Inventor 王贤保林俍佑彭明李金华
Owner HUBEI UNIV