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Copper nitride thin-film solar cell and preparation method thereof

A technology of solar cells and copper nitride, applied in circuits, photovoltaic power generation, electrical components, etc., to achieve the effects of reducing lattice heat loss, improving efficiency, and broadening the spectral range

Inactive Publication Date: 2020-04-14
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, copper nitride (Cu 3 N) New photovoltaic materials are favored by people, and extensive research has been carried out on their photoelectric properties, but they have not been reported as thin-film solar cells

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  • Copper nitride thin-film solar cell and preparation method thereof
  • Copper nitride thin-film solar cell and preparation method thereof

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Embodiment Construction

[0019] The copper nitride thin film solar cell of this embodiment includes the following structure from bottom to top: ITO glass 1, magnesium doped copper nitride thin film 2, composition graded copper nitride thin film 3, selenium doped copper nitride thin film 4, In the ITO film 5 and the silver electrode 6, in the composition-graded copper nitride film 3, the content of nitrogen gradually increases from bottom to top. The composition graded copper nitride film 3 has a thickness of 500nm and is divided into 10 layers, each layer is 50nm, and the nitrogen content gradually increases from bottom to top. Sunlight is irradiated from above the silver electrode 6 .

[0020] When preparing:

[0021] 1) Main raw materials and equipment

[0022] Copper, selenium, magnesium, ITO (indium tin oxide) and other targets: purity 99.99%, diameter 60mm, thickness 5mm.

[0023] ITO conductive glass: area ~ 25×25mm 2 , Sheet resistance ~ 15Ω / □, light transmittance ≥ 90%.

[0024] Nitrogen,...

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Abstract

The invention discloses a copper nitride thin-film solar cell and a preparation method thereof. The cell comprises the following structures from bottom to top: ITO glass, a magnesium-doped copper nitride film, a component gradient copper nitride film, a selenium-doped copper nitride film, an ITO film and a silver electrode, and in the component gradient copper nitride film, the nitrogen content isgradually increased from bottom to top. The copper nitride film is prepared by using a reactive magnetron sputtering method, and the copper nitride film with gradually changed forbidden band width isobtained by adjusting the flow of reaction gas (nitrogen), so that a spectral range of sunlight absorption of the film is widened.

Description

technical field [0001] The invention belongs to the technical field of thin-film solar cells, and in particular relates to a copper nitride thin-film solar cell and a preparation method thereof. Background technique [0002] Although crystalline silicon solar cells currently occupy more than 90% of the photovoltaic market, thin-film solar cells have obvious advantages in the application of building curtain wall glass and automotive glass. At present, thin-film solar cells mainly include amorphous silicon thin-film batteries, copper indium gallium selenide thin-film batteries, cadmium telluride thin-film batteries, and perovskite thin-film batteries. However, at present, these thin-film batteries have certain limitations in terms of cost, environmental protection, element reserves, and stability. Therefore, new thin-film solar cells that are green, environmentally friendly, abundant in reserves, and low in cost have gradually become a hot spot that people pay attention to. m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/068H01L31/032H01L31/18C23C14/06C23C14/04C23C14/18C23C14/24C23C14/54
CPCC23C14/0036C23C14/042C23C14/0641C23C14/18C23C14/24C23C14/542H01L31/0321H01L31/068H01L31/18Y02E10/547Y02P70/50
Inventor 黄仕华康桥李林华李兴达陈达
Owner ZHEJIANG NORMAL UNIVERSITY
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