Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as the general conductivity of the electron transport layer, achieve the effects of improving the fill factor and photoelectric conversion efficiency, increasing the concentration of free carriers, and reducing the concentration

Inactive Publication Date: 2020-12-08
宣城开盛新能源科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, the purpose of one or more embodiments of this specification is to propose a perovskite solar cell and its preparation method to solve the problem of TiO 2 General questions about the conductivity of the electron transport layer

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present specification shall have ordinary meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in one or more embodiments of the present specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanica...

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Abstract

One or more embodiments of the present specification provide a perovskite solar cell comprising, in order from bottom to top, a substrate on which transparent conductive glass is deposited, a magnesium-doped titanium dioxide electron transport layer, a perovskite absorption layer, a hole transport layer, and an electrode, the Mg element is used as an effective doping agent to be introduced into acompact TiO2 electron transport layer in a simple mode, and the planar perovskite solar cell is constructed. Mg doping can enable the Fermi level of TiO2 to move upwards, increase the free carrier concentration of the film and reduce the defect state concentration of the deep energy level. Therefore, the resistance of TiO2 is reduced, and the fill factor and the photoelectric conversion efficiencyof the whole cell device are improved.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] In recent years, the photoelectric conversion efficiency of perovskite solar cells has been rapidly improved, and has been regarded as the most promising photovoltaic technology. In perovskite solar cells, titanium dioxide (TiO 2 ) is the most widely used electron transport material, depending on the preparation method and structure, TiO 2 The electron transport layer is divided into a mesoporous structure and a planar structure. The planar structure can further simplify the preparation process and reduce the preparation cost, which is more conducive to commercialization; [0003] But TiO 2 The conductivity of the electron transport layer is average, and there are many surface defect states, which easily cause the recombination and accumulation of carriers...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/12H10K85/00H10K30/10H10K30/80Y02E10/549
Inventor 王超刘锐康徐晓华蒋明伟
Owner 宣城开盛新能源科技有限公司
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