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 low mobility, electron and hole recombination, etc., and achieve the effects of easy synthesis, simple operation, and improved electrical conductivity

Active Publication Date: 2018-08-10
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem that the mobility of electrons in the electron transport layer in the existing metal oxide electron transport layer is relatively low, and the recombination of electrons and holes is easy to occur, so as to improve the conversion efficiency of the battery

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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

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A method for preparing a perovskite solar cell, comprising the steps of:

[0036] Step S1, select FTO (tin oxide doped with F) conductive glass with a surface roughness of less than 1 nm as the conductive substrate, first clean the FTO conductive substrate, dry it with dry nitrogen after cleaning, and perform ultraviolet light and ozone treatment , to obtain a clean FTO conductive substrate; prepare TiO on the clean FTO conductive substrate 2 Dense layer film, the film thickness is 60nm, the specific operation method is: prepare a certain concentration (0.25mol / L) titanium isopropoxide ethanol solution, use spin coating method or spray coating method or roller coating method or spray pyrolysis method or LB film TiO was prepared on FTO conductive substrate by method or inkjet method 2 Thin film of dense layer, heated and annealed at 500°C for 30min.

[0037] Step S2, use 15ml of concentrated hydrochloric acid, 15ml of deionized water and 0.7ml of butyl titanate to conf...

Embodiment 2

[0043] A method for preparing a perovskite solar cell, comprising the steps of:

[0044] Step S1, select FTO (tin oxide doped with F) conductive glass with a surface roughness of less than 1 nm as the conductive substrate, first clean the FTO conductive substrate, dry it with dry nitrogen after cleaning, and perform ultraviolet light and ozone treatment , to obtain a clean FTO conductive substrate; prepare TiO on a clean FTO conductive substrate (tin oxide doped with F) 2 Dense layer film, the film thickness is 30nm, the specific operation method is: prepare a certain concentration (0.25mol / L) titanium isopropoxide ethanol solution, use spin coating method or spray coating method or roller coating method or spray pyrolysis method or LB film TiO was prepared on FTO conductive substrate by method or inkjet method 2 Thin film of dense layer, heated and annealed at 500°C for 30min.

[0045] Step S2, use 15ml of concentrated hydrochloric acid, 15ml of deionized water and 0.7ml of...

Embodiment 3

[0051] A method for preparing a perovskite solar cell, comprising the steps of:

[0052] Step S1, select FTO (tin oxide doped with F) conductive glass with a surface roughness of less than 1 nm as the conductive substrate, first clean the FTO conductive substrate, dry it with dry nitrogen after cleaning, and perform ultraviolet light and ozone treatment , to obtain a clean FTO conductive substrate; prepare TiO on a clean FTO conductive substrate (tin oxide doped with F) 2 Dense layer film, the film thickness is 30nm, the specific operation method is: prepare a certain concentration (0.25mol / L) titanium isopropoxide ethanol solution, use spin coating method or spray coating method or roller coating method or spray pyrolysis method or LB film TiO was prepared on FTO conductive substrate by method or inkjet method 2 Thin film of dense layer, heated and annealed at 500°C for 30min.

[0053] Step S2, use 15ml of concentrated hydrochloric acid, 15ml of deionized water and 0.7ml of...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof. The solar cell includes a conductive substrate, an electron transport layer and a perovskite light absorption layer, ahole transport layer and an anode layer in sequence from bottom to top, wherein the electron transport layer includes a compact layer at a lower layer and a mesoporous layer at an upper layer, the compact layer and the mesoporous layer are made of the same metallic oxide material, the mesoporous layer is a quantum dot modified mixed-crystal phase metallic oxide mesoporous thin film, and quantum dots are located between the mesoporous layer and the perovskite light absorption layer. The perovskite solar cell adopts a quantum dot material having an excellent photoelectric characteristic to modify the mixed-crystal phase metallic oxide thin film with relatively high carrier mobility, the transfer performance of electrons is improved, and the perovskite solar cell with high current density and high efficiency is obtained.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a method for preparing high-efficiency perovskite solar cells by regulating the interface between an electron transport layer and a perovskite layer. Background technique [0002] With the increasing consumption of non-renewable energy, energy shortage and environmental degradation have become more and more serious problems faced by people in the new century, and people pay more and more attention to the development and utilization of clean and renewable energy. Solar energy is an inexhaustible green energy source. The development of photovoltaic devices to convert solar energy into electrical energy provides an important way to solve energy problems. [0003] In recent years, perovskite solar cells have attracted much attention due to their high photoelectric conversion efficiency. Currently, it is reported that the highest conversion efficiency of perovskite solar cell ex...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/15H10K30/151Y02E10/549Y02P70/50
Inventor 庄稼向艳马柱夏浩然周薇亚
Owner SOUTHWEST PETROLEUM UNIV
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