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

Method for regulating crystal growth of perovskite layer and application of perovskite layer in solar cell

A solar cell and crystal growth technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as the limited effect of perovskite, and achieve the effects of promoting the commercialization process, improving efficiency, and high coverage

Pending Publication Date: 2019-08-09
GUANGDONG UNIV OF TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods currently have limited effect on improving the morphology of perovskite, and the development of new crystal growth strategies for perovskite layers, combined with the above methods, will help to further improve the efficiency of 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
  • Method for regulating crystal growth of perovskite layer and application of perovskite layer in solar cell
  • Method for regulating crystal growth of perovskite layer and application of perovskite layer in solar cell
  • Method for regulating crystal growth of perovskite layer and application of perovskite layer in solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for regulating the growth of perovskite layer crystals, preparing a 2,2'-bipyridyl layer on the surface of the anode interface layer NiOx, and then preparing a perovskite layer (FAPbI 3 ) 0.85 (MAPbI 3 ) 0.15 . Concrete preparation process is as follows:

[0038] Firstly, the quartz glass sheet was cleaned by ultrasonic cleaning with deionized water, acetone, detergent, deionized water and isopropanol in sequence, each step was 20 min each. After drying in an oven, it was treated with PLASMA (oxygen plasma) for 4 minutes. Then, spin-coat a layer of NiOx thin film on the above-mentioned treated quartz glass sheet with a thickness of about 40nm. The ethanol solution of 2,2'-bipyridyl was spin-coated on the NiOx layer in a nitrogen atmosphere glove box at a concentration of 1 mg mL –1 , the rotation speed is 3000rpm, and annealed at 100°C for 10h. Subsequently, the (FAPbI 3) 0.85 (MAPbI 3 ) 0.15 The solution was spin-coated on the 2,2'-bipyridine layer,...

Embodiment 2

[0040] A method for regulating the growth of perovskite layer crystals, preparing a 4,4'-bipyridyl layer on the surface of the anode interface layer NiOx, and then preparing a perovskite layer (FAPbI 3 ) 0.85 (MAPbI 3 ) 0.15 . The specific preparation process is the same as in Example 1.

[0041] The perovskite layer prepared by embodiment 1 and implementation 2 is compared with the unmodified perovskite layer, and its SEM figure and particle size distribution figure are as follows figure 1 As shown, the nucleation rate and crystal growth of the crystal can be reflected by observing the morphology and particle size distribution of the modified perovskite crystal. The faster the nucleation, the smaller the particle size of the crystal, from figure 1 It can be seen that after a layer of 2,2'-bipyridine or 4,4'-bipyridine was modified on the surface of NiOx, the particle size of the perovskite crystal was smaller than that of the unmodified one, indicating that the introducti...

Embodiment 3

[0044] A method for regulating the growth of perovskite layer crystals, preparing a 1,10-phenanthroline layer on the surface of the anode interface layer NiOx, and then preparing a perovskite layer (FAPbI 3 ) 0.85 (MAPbI 3 ) 0.15 . The specific preparation process is the same as in Example 1. The results show that after the NiOx surface is modified with a layer of 1,10-phenanthroline, the fluorescence intensity of the perovskite film is stronger than that of the unmodified perovskite film on the NiOx layer. It can be seen that the NiOx surface is modified with a layer of 1,10-phenanthroline The morphology of the perovskite film is significantly better than that of the unmodified perovskite film with the NiOx layer, indicating that the introduction of the 1,10-phenanthroline layer can regulate the film-forming properties of the perovskite, making the crystal morphology of the perovskite better .

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

No PUM Login to View More

Abstract

The invention discloses a method for regulating the crystal growth of a perovskite layer. A modified layer is prepared on the surface of an anode interface layer, and then a perovskite layer is prepared on the surface of the modified layer. The modified layer is one or more in a group consisting of 2, 2' -bipyridine, 4, 4'-bipyridine, 1,10-phenanthroline and ethylenediamine tetraacetic acid. The method is easy to combine with the methods of introducing additives, mixing a solvent system and using an anti-solvent, a uniform film with a high coverage rate can be effectively obtained, the furtherimprovement of the efficiency of an inverted perovskite solar cell is helped, and the method has great significance to promote the commercialization process of perovskite solar cells.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, and more specifically, to a method for regulating and controlling the growth of perovskite layer crystals and its application in solar cells. Background technique [0002] Solar cells based on organic-inorganic hybrid perovskite active materials have the general chemical formula AMX3, where A stands for Cs, CH 3 NH 3 (MA) or HC (NH 2 ) 2 (FA), M represents Pb or Sn, X represents halogen Cl, Br, I. The traditional proton-type organic-inorganic perovskite MAPbI3 has a tetragonal structure and an energy band width of 1.4eV-1.6eV, in which a class of perovskite structures can be synthesized by substituting elements for MA, Pb, or elements at the I position. Due to the potential advantages of organic-inorganic hybrid perovskite solar cells such as strong absorption, high mobility, long carrier life and low-cost solution processing, it has become a new important research direction in...

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): H01L51/48H01L51/42
CPCH10K71/12H10K30/30Y02E10/549
Inventor 张永文谭婉怡闵永刚
Owner GUANGDONG UNIV OF TECH
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