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A method for industrially preparing a copper oxide in a hole transport layer of a perovskite solar cell

A technology of hole transport layer and copper oxide, which is applied in the field of solar cells, can solve the problem of unfavorable preparation of large-area and uniform thin films, restrictions on the industrialization of perovskite thin-film cells, and the high cost of preparation materials for perovskite solar cells. problem, achieve the effect of reducing battery cost and being suitable for large-scale application promotion

Inactive Publication Date: 2018-12-14
CHANGZHOU INST OF TECH
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Problems solved by technology

[0003] However, the preparation materials of perovskite solar cells are expensive, the most expensive of which is the spiro hole transport layer organic molecular material, whose unit price is more than three times the price of gold; and its laboratory preparation technology uses solution spin coating This technology is not conducive to the preparation of large-area uniform thin films, which seriously limits the industrialization of perovskite thin-film batteries.

Method used

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  • A method for industrially preparing a copper oxide in a hole transport layer of a perovskite solar cell
  • A method for industrially preparing a copper oxide in a hole transport layer of a perovskite solar cell
  • A method for industrially preparing a copper oxide in a hole transport layer of a perovskite solar cell

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Embodiment 1

[0038] Sputtering power 75W, process vacuum 5mTorr, O 2 :N 2 =2:6sccm, the thickness of copper oxide is 50nm, the deposition rate is 5nm / min, and the photoelectric conversion efficiency of the solar cell is 5.6%.

Embodiment 2

[0040] Sputtering power 50W, process vacuum 10mTorr, O 2 :N 2 =1:4sccm, the thickness of copper oxide is 150nm, the deposition rate is 3.5nm / min, and the photoelectric conversion efficiency of the solar cell is 10.2%.

Embodiment 3

[0042] Sputtering power: 20W, process vacuum 3mTorr, O 2 :N 2 =0.5:2sccm, the thickness of the copper oxide layer is 75nm, the deposition rate is 3nm / min, the photoelectric conversion efficiency of the solar cell is 15.7%, the main battery parameters are the open circuit voltage Voc is 1.04V, and the short circuit current density Jsc is 19.84mA / cm 2 , the fill factor FF is 75.87% (such as image 3 Shown, which is the solar cell I-V curve prepared using the optimal process conditions).

[0043] The photoelectric conversion efficiency of the perovskite solar cell prepared by controlling the above parameters is as high as 15.7%. Although the photoelectric conversion efficiency is slightly lower than the existing perovskite solar small-area cells, its cost is greatly reduced, and industrialization can be realized.

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Abstract

The invention provides a method for industrially preparing a copper oxide in a hole transport layer of a perovskite solar cell. A magnetron sputtering technology is adopted to deposit a copper oxide film on a substrate on which an electron transport layer and a perovskite organic photoelectric conversion layer are completed, in the magnetron sputtering process, O2 and N2 are introduced to preparean N2-doped copper oxide film as the hole transport layer, and the thickness of the N2-doped copper oxide film is 50 to 150 nm; and the photoelectric conversion efficiency of the obtained perovskite solar cell is up to 15.7%. The method provided by the invention can reduce the cost of the hole transport layer of the perovskite solar cell, and realize large-scale industrial application at the sametime.

Description

technical field [0001] The invention relates to a solar cell, in particular to a method for industrially preparing copper oxide for a hole transport layer of a perovskite solar cell, belonging to the field of solar cells. Background technique [0002] In order to solve the problem of air pollution, photovoltaic cell modules have been widely promoted and applied in recent years. Solar cells are mainly composed of crystalline silicon cells and thin-film solar cells. Among them, among thin-film solar cells, perovskite solar small-area cells that have emerged in recent years have attracted widespread attention due to their initial photoelectric conversion efficiency as high as 22%. Pay attention to. [0003] However, the preparation materials of perovskite solar cells are expensive, the most expensive of which is the spiro hole transport layer organic molecular material, whose unit price is more than three times the price of gold; and its laboratory preparation technology uses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56C23C14/08C23C14/35
CPCC23C14/087C23C14/35H10K50/155H10K71/00
Inventor 杜文汉杨景景姚茵白建会赵宇肖进熊超朱晨曦
Owner CHANGZHOU INST OF TECH
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