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

Efficient and stable perovskite solar battery and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of poor cell efficiency and stability, easy migration of ions, etc., and achieve improved photogenerated carrier transport performance and stability, good crystallinity, and low cost. low effect

Active Publication Date: 2017-10-20
EAST CHINA NORMAL UNIVERSITY
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency and stable perovskite for the problems of easy migration of ions in the perovskite layer and the existence of a large number of grain boundaries in the existing perovskite solar cell preparation technology, which lead to poor battery efficiency and stability. Solar cell and its preparation method

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
  • Efficient and stable perovskite solar battery and preparation method thereof
  • Efficient and stable perovskite solar battery and preparation method thereof
  • Efficient and stable perovskite solar battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] On the FTO conductive glass, spin-coating concentration is 0.15 mol / liter of isopropyl titanate absolute ethanol solution, the rotating speed is 4000 rpm, the time is 40 seconds, then annealed at 500 ° C for 30 minutes; then spin-coat titanium dioxide nanoparticles ( Dyesol, 18-NRT, diluted with absolute ethanol at a mass ratio of 1:6, fully stirred) as a mesoporous layer, the rotating speed is 4000 rpm, the time is 40 seconds, and then annealed at 500 ° C for 30 minutes; further, the above The titanium dioxide layer is soaked in 0.1 mol / liter titanium tetrachloride aqueous solution at 70°C for 30 minutes, washed with deionized water and absolute ethanol in turn after taking it out, and then annealed at 500°C for 30 minutes; The one-step perovskite precursor solution (462 mg lead iodide, 159 mg methylammonium iodide, 80 μl DMSO and 650 μl DMF) was spin-coated on the titanium oxide layer prepared in the previous step at 4000 rpm / minute, the time is 40 seconds, drop 500...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an efficient and stable perovskite solar battery, which is formed by transparent conductive glass, an electron transfer layer, a mesoporous layer, a perovskite layer, a hole transfer layer and a back electrode which are laminated in sequence. During preparation of the perovskite layer, a certain quantity of terephthalic acid (TPA) additives are added to a precursor liquid of a traditional organic and inorganic metal halide perovskite, so that growth kinetics of a perovskite crystal changes, an obtained perovskite crystal boundary is filled up, and thus joined large-sized perovskite crystal particles are formed. According to the perovskite solar battery prepared by the method, compared with an additive-free perovskite solar battery, annihilation of photoproduction excitons at the crystal boundary is reduced, so that the photoelectric conversion efficiency is obviously increased. In addition, the perovskite crystal boundary is reduced, moisture, oxygen and the like are difficult to enter from the crystal boundary to corrode the perovskite layer, thereby enabling the stability of the whole battery to be obviously better.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] The development of efficient and cheap solar cells is an effective means to solve the problems of energy shortage and environmental pollution faced by the current society. In recent years, organic-inorganic metal halide perovskite solar cells have attracted much attention due to their cheap raw materials, simple preparation process, and high photoelectric conversion efficiency. At present, perovskite solar cells have made major breakthroughs in the preparation process and mechanism research. The highest photoelectric conversion efficiency has reached 22.1%, which is basically comparable to silicon solar cells, showing an extremely attractive application prospect. [0003] However, organic-inorganic metal halide perovskite is an ionic compound, which is easily degraded by water...

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
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/30Y02E10/549
Inventor 侯显陈晓红潘丽坤谢文辉骆慧谢伟佳张健开毛武剑
Owner EAST CHINA NORMAL UNIVERSITY
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