Large-area perovskite solar cell

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as poor continuity and uniformity of perovskite films, degradation of solar cell performance, and limitation of perovskite film preparation. , to achieve the effect of improving continuity and poor uniformity, uniform carrier distribution, and making up for interface defects

Inactive Publication Date: 2020-05-15
XIAN ZHISHENG RUIXIN SEMICON TECH CO LTD
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Problems solved by technology

[0004] Although perovskite materials are easy to synthesize and relatively cheap, the photoelectric conversion efficiency of large-area solar cells prepared by perovskite is currently low, mainly due to the poor continuity and uniformity of perovskite films prepared by existing processes. , leading to a sharp decline in the performance of solar cells in all aspects, thus limiting the preparation of large-area perovskite films

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  • Large-area perovskite solar cell
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  • Large-area perovskite solar cell

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Embodiment 1

[0029] See figure 1 , figure 1 A schematic structural diagram of a large-area perovskite solar cell provided for an embodiment of the present invention, the perovskite solar cell includes: a conductive glass 1; a hole transport layer 2 located on the conductive glass 1; a composite perovskite light-absorbing layer 3, located on the hole transport layer 2; the electron transport layer 4, located on the composite perovskite light-absorbing layer 3; the hole blocking layer 5, located on the electron transport layer 4, and the counter electrode 6, located on the hole blocking layer 5.

[0030] In a specific embodiment, the conductive glass 1 is ITO conductive glass or FTO conductive glass; preferably, the conductive glass 1 is ITO conductive glass. ITO is indium oxide (In 2 o 3 , with a mass fraction of 90%) and tin oxide (SnO 2 , with a mass fraction of 10%), the Fermi level ranges from 4.5 to 5.0eV, has a higher carrier concentration and lower resistivity; in the wavelength ...

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Abstract

The invention relates to a large-area perovskite solar cell. The large-area perovskite solar cell comprises a conductive glass; a hole transport layer positioned on the conductive glass; a composite perovskite light absorption layer located on the hole transport layer; an electron transport layer located on the composite perovskite light absorption layer; a hole blocking layer located on the electron transport layer; and a counter electrode positioned on the hole blocking layer. According to the embodiment of the invention, the composite perovskite light absorption layer is arranged, the perovskite films made of different materials are arranged on the hole transport layer at intervals, and the transverse flow of the photon-generated carriers in the perovskite light absorption layer can bepromoted, so that the carriers in the perovskite film are uniformly distributed, the interface defects of the perovskite film are overcome, and the problems of poor continuity and uniformity of the perovskite film are improved, and accordingly the conversion efficiency of the solar energy is improved, and a foundation is laid for the preparation of the large-area perovskite film.

Description

technical field [0001] The invention belongs to the field of photoelectric technology, and in particular relates to a large-area perovskite solar cell. Background technique [0002] In recent years, solar cell technology has developed rapidly, and perovskite cells have become a type of cell that has attracted much attention, and the device efficiency has rapidly increased from 3.8% in 2009 to 22.7%. Perovskite batteries have the advantages of high conversion efficiency, simple preparation, wide range of materials, and low cost, and have broad application prospects. [0003] A solar cell is a device that uses the photovoltaic effect to convert light energy into electrical energy. As a light-absorbing material for solar cells, perovskite materials play a role in absorbing incident light in the device, and have strong absorption bands in the visible and near-infrared regions, which is a necessary condition for realizing high efficiency of perovskite solar cells. In perovskite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42
CPCH10K85/30H10K30/30Y02E10/549
Inventor 王萌韩阳
Owner XIAN ZHISHENG RUIXIN SEMICON TECH CO LTD
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