Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Perovskite thin film, preparation method and application

A perovskite and thin film technology, applied in the field of photoelectric functional materials, can solve the problems of low quality of perovskite thin films, and achieve the effect of avoiding damage and avoiding cross contamination

Pending Publication Date: 2022-03-25
深圳无限光能技术有限公司
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the quality of the perovskite film prepared by the two-step evaporation method directly using lead iodide as the lead source is relatively low in the above-mentioned prior art, the present invention provides a perovskite film, preparation method and application , the present invention uses co-evaporated lead iodide, lead chloride and / or lead bromide as the lead source for the preparation of perovskite films in a two-step method, which effectively solves the difficulty in preparing large-area perovskite by the traditional two-step solution spin coating method The difficult problem of ore, do not use organic solvent in the preparation process, have avoided organic solvent to produce the damage effect to the functional layer below the perovskite thin film and have adverse impact on the environment, provide the basis for the industrial production of perovskite battery; Based on the present invention, obtain The perovskite thin film can be applied in the field of photovoltaic devices such as solar cells

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Perovskite thin film, preparation method and application
  • Perovskite thin film, preparation method and application
  • Perovskite thin film, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method of perovskite film provided by the invention comprises the following steps:

[0032] (1) Provide a substrate and clean it;

[0033] (2) Put the M powder and the lead iodide powder into the heating boat respectively, put the substrate and the heating boat into the vacuum coating machine and evacuate, place the heating boat under the substrate, and electrically heat the heating boat to make the M powder and the heating boat The lead iodide powder is volatilized to obtain the lead source film;

[0034] (3) Transfer the substrate to another cavity, and vapor-deposit a layer of amine salt on the lead source film;

[0035] (4) annealing to obtain a perovskite film;

[0036] In step (1), the material of the substrate is not specifically limited, and it can be any suitable substrate. The process of cleaning the substrate is to use glass cleaning solution, deionized water, ethanol and isopropanol to ultrasonically clean, then blow Dry for later use, the...

Embodiment

[0045] The substrate was ultrasonically cleaned with glass cleaning solution, deionized water, ethanol and isopropanol, dried, and treated with ultraviolet-ozone for 15 minutes. The substrate was ITO conductive glass with a glass substrate. Colloidal tin oxide particles were spin-coated on ITO conductive glass to form an electron transport layer. The spin-coating speed was 3000rpm, and the spin-coating time was 30s; Transfer to the chamber of the vacuum coating machine. Weigh 10g of lead chloride powder and 10g of lead iodide powder and place them in the heating boat respectively, place the heating boat in the cavity of the vacuum coating machine, place the heating boat under the substrate, evacuate until the vacuum degree is less than 1Pa, and use a DC power supply Direct current is applied to the heating boat, and the temperature of the heating boat rises under the thermal effect of the current. After the temperature reaches the boiling point of lead chloride and lead iodide...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a perovskite thin film, a preparation method and application, and the method comprises the following steps: respectively putting M powder and lead iodide powder into a heating boat, putting a substrate and the heating boat into a vacuum coating machine, vacuumizing, putting the heating boat below the substrate, and electrically heating the heating boat to volatilize the M powder and the lead iodide powder to obtain a lead source thin film; transferring the substrate to another cavity, and depositing a layer of amine salt on the lead source film; and annealing to obtain the perovskite thin film. According to the invention, different lead sources are evaporated in vacuum to obtain the lead source film with high flatness and high uniformity; the perovskite thin film is prepared by adopting a two-step method, the problem that a large-area perovskite thin film is difficult to prepare by adopting a traditional two-step solution spin-coating method is effectively solved, an organic solvent is not used in the preparation process, and the damage effect of the organic solvent on a functional layer below the perovskite thin film and the adverse effect on the environment are avoided; the obtained perovskite thin film can be applied to preparation of photoelectric devices.

Description

technical field [0001] The invention belongs to the technical field of photoelectric functional materials, and in particular relates to a perovskite thin film, a preparation method and an application. Background technique [0002] Metal halide organic-inorganic hybrid perovskite solar cells, as a new generation of photovoltaic power generation technology, have the advantages of low cost and simple preparation, and have attracted extensive attention from academia and industry. Break the traditional silicon battery market. Compared with traditional silicon cells, perovskite cells have the advantages of long carrier lifetime, long diffusion distance, direct bandgap and adjustable bandgap. Its basic structure includes a conductive metal oxide substrate, an electron transport layer, a perovskite light-absorbing layer, a hole transport layer, and a metal back electrode. The preparation method of perovskite thin films is crucial in the preparation of perovskite cells and other op...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42
CPCH10K71/00H10K71/40H10K30/00Y02E10/549
Inventor 易陈谊李航王思洋谭理国周俊杰蒋超凡李明昊刘越叶一然
Owner 深圳无限光能技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com