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A kind of preparation method of perovskite film with microtube array structure

An array structure and perovskite technology, applied in the field of light-absorbing materials for solar cells, can solve problems such as good stability, poor environmental protection, and not easy to deliquescence, etc., to achieve improved orientation and uniformity, life expectancy, movement rate, and crystallization rate delayed effect

Active Publication Date: 2021-06-25
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the stability of the perovskite film prepared in this way has been improved to a certain extent, the durability is not good, and the anti-solvents such as toluene and chlorobenzene used in the preparation process are toxic and pungent, environmentally friendly. Poor performance, and harmful to human health, is not conducive to the large-scale preparation of green batteries in the later stage
[0005] At present, there is no perovskite film with good stability, not easy to deliquescence, strong carrier transport ability, and outstanding electrical conductivity in the prior art.

Method used

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  • A kind of preparation method of perovskite film with microtube array structure
  • A kind of preparation method of perovskite film with microtube array structure
  • A kind of preparation method of perovskite film with microtube array structure

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preparation example Construction

[0032] A method for preparing a perovskite film with a microtube array structure, comprising the following steps:

[0033] (1) Clean the FTO transparent conductive glass with acetone, alcohol, and deionized water in sequence, ultrasonically clean it for 10-15 minutes each time, then dry it with a nitrogen gun, and then put the FTO glass substrate into an ozone machine for ozone treatment for 10-15 minutes ;

[0034] (2)CH 3 NH 3 PB 3-x Cl x Preparation of precursor solution: CH 3 NH 3 I and PbCl 2 Mix and dissolve in N,N-dimethylformamide solvent at a molar ratio of 1:1 to 3:1, where the ratio between solvent and mixed solute is 0.1

[0035] ~0.3mol / l, produce CH 3 NH 3 PB 3-x Cl x Precursor solution, the solution is oscillated in an ultrasonic cleaner for 8-14 hours, and the ultrasonic cleaner is heated to 40°C-60°C to obtain fully reacted CH 3 NH 3 PB 3-x Cl x Precursor solution.

[0036] (3) CH doped with deionized water 3 NH 3 PB 3-x Cl x Film preparati...

Embodiment 1

[0040] A method for preparing a perovskite film with a microtube array structure, comprising the following steps:

[0041] (1) Cleaning and ozone treatment of FTO glass: After scrubbing the FTO transparent conductive glass with detergent, then ultrasonically clean it with acetone, deionized water, alcohol, and deionized water for 10 minutes, and then dry it with a nitrogen gun. Then put the FTO substrate into an ozone machine and carry out ozone treatment for 15 minutes to obtain a conductive glass substrate for subsequent use;

[0042] (2)CH 3 NH 3 PB 3-x Cl x Preparation of precursor solution: CH 3 NH 3 I and PbCl 2 Mix and dissolve in N,N-dimethylformamide solvent at a molar ratio of 1:1 to obtain CH 3 NH 3 PB 3-x Cl x Precursor solution, the solution was oscillated in an ultrasonic cleaner for 8 hours, and the ultrasonic cleaner was heated to 60°C to obtain CH 3 NH 3 PB 3-x Cl x Precursor solution, spare;

[0043] (3) CH doped with deionized water 3 NH 3 P...

Embodiment 2

[0045] A method for preparing a perovskite film with a microtube array structure, comprising the following steps:

[0046] (1) Cleaning and ozone treatment of FTO glass: After scrubbing the FTO transparent conductive glass with detergent, then ultrasonically clean it with acetone, deionized water, alcohol, and deionized water for 12 minutes, and then dry it with a nitrogen gun. Then put the FTO substrate into an ozone machine and carry out ozone treatment for 14min to obtain a conductive glass substrate for subsequent use;

[0047] (2)CH 3 NH 3 PB 3-x Cl x Preparation of precursor solution: CH 3 NH 3 I and PbCl 2 Mix and dissolve in N,N-dimethylformamide solvent at a molar ratio of 2:1 to obtain CH 3 NH 3 PB 3-x Cl x Precursor solution, the solution was oscillated in an ultrasonic cleaner for 10 h, and the ultrasonic cleaner was heated to 50 °C to obtain CH 3 NH 3 PB 3-x Cl x Precursor solution, spare;

[0048] (3) CH doped with deionized water 3 NH 3 PB 3-x ...

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Abstract

A method for preparing a perovskite film with a microtube array structure, including the step of preparing a conductive glass substrate; preparing CH 3 NH 3 PB 3‑x Cl x Steps of precursor solution; one spin coating of CH on conductive glass substrate 3 NH 3 PB 3‑x Cl x The step of precursor solution; the step of spin-coating a certain amount of deionized water; the second spin-coating of CH 3 NH 3 PB 3‑x Cl x Steps for Precursor Solution; Steps for Subsequent Processing. A method for preparing a perovskite film with a microtube array structure of the present invention, through multi-step unique process fine control and spin coating solution selection, a one-dimensional microtube array structure is prepared, which has a large specific surface area, Perovskite film with few grain boundaries, low defect density, high carrier mobility, good electrical conductivity, not easy to deliquesce in the air, good stability, and strong environmental adaptability.

Description

technical field [0001] The invention relates to the technical field of light-absorbing materials for solar cells, in particular to a method for preparing a perovskite film with a microtube array structure. Background technique [0002] With the frequent shortage of non-renewable energy sources such as coal, oil, and natural gas, the problems of energy depletion and serious environmental pollution have increasingly become bottlenecks restricting economic and social development. The development of renewable clean energy is an inevitable trend of social development. As an inexhaustible clean energy source, solar energy has paved the way for the rapid development of solar cells. A solar cell is a device that converts light energy into electrical energy through the photoelectric effect or photochemical effect, also known as a photovoltaic cell. As an emerging third-generation solar cell—perovskite solar cell, its photoelectric conversion efficiency has exceeded 22%, and it has g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K71/40H10K30/15Y02E10/549
Inventor 李新利陈永超李丽华黄金亮顾永军李谦
Owner HENAN UNIV OF SCI & TECH
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