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natao 3 Method for preparing perovskite solar cells as electron transport layer

A technology of electron transport layer and solar cell, which is applied in semiconductor/solid-state device manufacturing, circuits, electrical components, etc., can solve the problems that limit the efficiency and stability of perovskite solar cells, and achieve novel preparation methods and simple and convenient manufacturing processes , The effect of stable device performance

Active Publication Date: 2021-08-06
SUZHOU UNIV
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AI Technical Summary

Problems solved by technology

Although TiO 2 Good electron selectivity, but surface adsorption to oxygen and UV rays may limit further improvements in efficiency and stability of perovskite solar cells

Method used

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  • natao <sub>3</sub> Method for preparing perovskite solar cells as electron transport layer
  • natao <sub>3</sub> Method for preparing perovskite solar cells as electron transport layer
  • natao <sub>3</sub> Method for preparing perovskite solar cells as electron transport layer

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Embodiment 1

[0026] NaTaO 3 A method for preparing a perovskite solar cell as an electron transport layer, comprising the following steps:

[0027] (1) FTO transparent conductive glass substrate cleaning and NaTaO 3 Film preparation: The FTO transparent conductive glass substrate was ultrasonically cleaned three times with deionized water, acetone, and ethanol, and then dried at 100°C until the solvent and moisture were completely removed. The treated FTO transparent conductive glass substrate was treated with a UV lamp Treat with ozone for 25 min, disperse 10 mg of NaTaO3 in 1 mL of deionized water for later use, and then spin-coat the treated FTO transparent conductive glass substrate with NaTaO 3 , put it on a heating platform and heat at 100°C for 30min, with a thickness of 70 nm.

[0028] (2) Preparation of perovskite film: Dissolve 180mg methylammonium iodide and 553mg lead iodide in 1mL mixed solution of dimethyl sulfoxide and γ-butyrolactone, dimethyl sulfoxide and γ-butyrolacton...

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Abstract

The invention discloses a NaTaO 3 The method for preparing a perovskite solar cell as an electron transport layer includes the following steps: (1) cleaning and drying the FTO transparent conductive glass substrate, treating it with an ultraviolet lamp and ozone, and then spinning the processed FTO transparent conductive glass substrate Coated with NaTaO 3 Electron transport layer, placed on a heating table for heat treatment; (2) NaTaO in step (1) 3 Prepare a perovskite film layer on the electron transport layer; (3) prepare a hole transport layer on the perovskite film layer prepared in step (2); (4) prepare MoO 3 and Ag electrodes. Use NaTaO 3 As an electron transport layer, it improves the photoelectric conversion efficiency; the surface of the film is smoother, making the crystallization of the perovskite film more uniform and dense; slowing down the degradation process of the perovskite layer and improving the stability of the device; reducing the internal defects of the perovskite solar cell. Therefore, NaTaO 3 It is a good electron transport layer material.

Description

technical field [0001] The invention belongs to the field of photovoltaic devices, in particular to a NaTaO 3 Method for preparing perovskite solar cells as electron transport layer. Background technique [0002] Organic-inorganic hybrid perovskite solar cells are considered to be a form of energy comparable to inorganic silicon solar cells due to their unique optical properties and simple fabrication process. After several years of development, although its photoelectric conversion efficiency has exceeded 22%, manufacturing high-efficiency and long-term stable perovskite solar cells is a necessary condition for its commercialization. Perovskite solar cells have two device structures: planar and porous. Recently, various new electron transport layers have been used in planar structure PSCs to prevent moisture, oxygen and ultraviolet light from entering the perovskite layer. stability. The most advanced perovskite solar cells reported so far use titanium dioxide (TiO 2 ) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCY02E10/549
Inventor 王照奎廖良生叶青青
Owner SUZHOU UNIV
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