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Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of easily affecting the electrical properties of solar cell device resistance, open circuit voltage fill factor, surface plasmon effect enhancement effect, randomness and uncontrollability, etc. , to achieve high production and application value, improve photoelectric conversion efficiency, and high flexibility

Inactive Publication Date: 2017-08-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this technology is that the direct contact between the metal nano film and the photovoltaic layer is easy to affect the electrical properties of the solar cell device resistance, open circuit voltage, and fill factor.
However, the disadvantages of this technology are: due to the randomness and uncontrollability of the distribution of metal nanoparticles, the instability of the efficiency improvement is caused, and the surface plasmon effect is not obvious in the near ultraviolet and visible light bands.

Method used

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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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preparation example Construction

[0062] (9) Complete the preparation of the perovskite solar cell.

[0063] In order to effectively improve the photoelectric conversion efficiency of the perovskite solar cell in the embodiment of the present invention, a nano light-trapping structure is set on the buffer layer corresponding to the electron transport layer of the perovskite solar cell and its upper layer, and the metal electrode, and the nanostructure increases by scattering. The length of the optical path and the realization of the surface plasmon effect can effectively increase the light absorption of the photoactive layer, thereby effectively improving the photoelectric conversion efficiency of the present invention.

[0064] In the preparation process of the present invention, the soft nano-imprinting process is used to prepare the nano-concave-convex structure, which effectively ensures the high fidelity of the copying and transferring process, and at the same time realizes one-step imprinting forming, whe...

Embodiment 1

[0070] Such as figure 2 As shown in (a), in one embodiment, the shape of the nano concave-convex structure used is a one-dimensional periodic grating structure with a groove depth of 80 nm and a period of 500 nm.

[0071] The specific manufacturing process of each layer structure of the transparent electrode 2, the hole transport layer 3, the perovskite light absorption layer 4, the electron transport layer 5, the buffer layer 6 and the metal electrode 7 on the substrate 1 can be respectively selected from the solution method. Coating, vapor deposition, sputtering and other methods, or other known methods, preferably, such as image 3 As shown, in this embodiment, the specific process is as follows:

[0072](1) On the other surface of common float glass (as substrate 1) sputtering generates ITO thin film, carries out photolithographic treatment to ITO thin film, cuts into required size, and this ITO thin film is as first electrode 2, then, to The ITO film was ultrasonically...

Embodiment 2

[0086] Such as figure 2 As shown in (b), the nano-concave-convex structure is a two-dimensional quasi-periodic moth-eye shape, the groove depth is 80nm, and the period is 400nm. Of course, in other embodiments, the relevant specific parameters of the nano-concave-convex structure can be selected according to actual needs. , so as to obtain the first nanometer light-trapping structure with different periods, which is not specifically limited in the present invention.

[0087] The specific manufacturing process of each layer structure of the first electrode 2, the hole transport layer 3, the perovskite layer 4, the electron transport layer 5, the buffer layer 6 and the metal electrode 6 on the substrate 1 can be selected from solution method spin coating, Methods such as vapor deposition, sputtering, or other known methods, preferably, such as image 3 As shown, in the embodiment, the specific process is as follows:

[0088] (1) On the other surface of common float glass (as ...

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Abstract

The invention relates to a perovskite solar cell with a nano light trap structure and a preparation method thereof. The perovskite solar cell comprises sequentially stacked substrate, transparent electrode, first transmission layer, perovskite light absorbing layer, second transmission layer, buffer layer and metal electrode, wherein the second transmission layer is provided with the nano light trap structure. According to the perovskite solar cell and the preparation method thereof, the light absorption can be effectively increased in a wide spectral range from ultraviolet to infrared, thus the photoelectric conversion efficiency of the perovskite solar cell is significantly improved, the preparation process is simple, the cost is low, and the perovskite solar cell is suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell with a nano light-trapping structure and a preparation method thereof. Background technique [0002] With the continuous depletion of the main energy sources - fossil fuels (coal, oil, natural gas, etc.) and the increasing environmental pollution, energy issues have become one of the important issues facing society today. This has prompted researchers to turn their attention to clean and renewable energy. Because of its "inexhaustible and inexhaustible" solar energy is a real "green" energy, it has become an energy strategy for sustainable development of governments around the world. At present, silicon solar cells and compound semiconductor solar cells are still the main commercial cells in solar cells, but both the cell material itself and the preparation technology require relatively high costs. New solar cells have become the focus of competing r...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44
CPCH10K30/10H10K30/87Y02E10/549Y02P70/50
Inventor 唐建新魏健陈敬德许瑞鹏李驰
Owner SUZHOU UNIV
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