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 g

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

Example Embodiment

[0036] Example 1

[0037] A method for regulating the crystal growth of the perovskite layer is to prepare a 2,2'-bipyridine layer on the surface of the anode interface layer NiOx, and then prepare a perovskite layer (FAPbI 3 ) 0.85 (MAPbI 3 ) 0.15 . The specific preparation process is as follows:

[0038] First, the quartz glass sheet was cleaned by ultrasonic with deionized water, acetone, detergent, deionized water and isopropanol in sequence, 20 minutes each step. After drying in an oven, use PLASMA (oxygen plasma) for 4 minutes. Then, spin-coated a layer of NiOx film on the above-treated quartz glass sheet with a thickness of about 40 nm. Spin-coating 2,2'-bipyridine in ethanol solution on the NiOx layer in a glove box under nitrogen atmosphere, with a concentration of 1 mg mL -1 , The rotating speed is 3000rpm, annealing at 100℃ for 10h. Subsequently, (FAPbI 3 ) 0.85 (MAPbI 3 ) 0.15 The solution is spin-coated on the 2,2'-bipyridine layer, the solvent is a mixed solvent ...

Example Embodiment

[0039] Example 2

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

[0041] Comparing the perovskite layer prepared in Example 1 and Example 2 with the unmodified perovskite layer, the SEM image and particle size distribution map are as follows figure 1 As shown, by observing the morphology and particle size distribution of the modified perovskite crystals, the nucleation speed and crystal growth of the crystals can be reflected. The faster the nucleation, the smaller the particle size of the crystals. figure 1 It can be seen that after a layer of 2,2'-bipyridine or 4,4'-bipyridine is modified on the NiOx surface, the particle size of the perovskite crystals is smaller than that of the unmodified one, indicating that the introduction of 2,...

Example Embodiment

[0043] Example 3

[0044] A method for regulating the crystal growth of the perovskite layer is to prepare a 1,10-phenanthroline layer on the surface of the anode interface layer NiOx, and then prepare 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 the fluorescence intensity of the perovskite film is stronger after the NiOx surface is modified with a layer of 1,10-phenanthroline than the unmodified perovskite film of 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 of the NiOx layer, indicating that the introduction of the 1,10-phenanthroline layer can control the film formation 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 Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap