A preparation method of flexible large-area perovskite solar cells based on roller coating process

A solar cell and perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of easy deformation of flexible substrates, poor perovskite crystal quality, uneven thickness, etc., to reduce toxicity hazards and complex processes performance, overcoming poor crystal quality and high production efficiency

Active Publication Date: 2019-11-12
NANKAI UNIV
View PDF5 Cites 0 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 method for preparing a flexible large-area perovskite solar cell based on a roll coating process. The present invention can effectively solve the problems of easy deformation of flexible substrates, poor crystal quality of perovskite and thickness of perovskite solar cells by adjusting the roll coating process. Uneven technical problems; improving the uniformity and flatness of the coating film can realize the preparation of flexible, especially large-area perovskite solar cells, and expand the application scenarios of perovskite solar cells; Low-cost, roll-to-roll production of large-area perovskite 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
  • A preparation method of flexible large-area perovskite solar cells based on roller coating process
  • A preparation method of flexible large-area perovskite solar cells based on roller coating process
  • A preparation method of flexible large-area perovskite solar cells based on roller coating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 and Figure 3-4 , a method for preparing a flexible large-area perovskite solar cell based on a roll coating process, comprising the following steps:

[0034] Treatment of ITO flexible substrate (PET): treat the cleaned flexible conductive substrate with ultraviolet ozone;

[0035] Fabrication of Electron Transport Layers on Flexible Conductive Substrates by Roll Coating Process: Addition of SnO 2 Aqueous solution of nanoparticles, immediately roll coating at a constant speed (such as image 3 shown), blow dry with nitrogen flow, and anneal at 100°C for 30 minutes to prepare electron transport layer 4;

[0036] Prepare CH 3 NH 3 I and PbI 2 mixed solution of PbI 2 The concentration is 0.5 mol / liter, the solvent adopts dimethylformamide, PbI 2 and CH 3 NH 3The molar ratio of I is 1:1 to prepare the perovskite precursor solution, drop the above mixed solution on the electron transport layer, immediately coat at a uniform speed and blow dry with nitr...

Embodiment 2

[0040] see figure 1 and Figure 3-4 , a method for preparing a flexible large-area perovskite solar cell based on a roll coating process, comprising the following steps:

[0041] Treatment of stainless steel substrate: treat the cleaned flexible conductive substrate with ultraviolet ozone;

[0042] Preparation of electron transport layer on flexible conductive substrate by roll coating process: adding nano-titanium dioxide (TiO 2 ) solution, immediately roll coating at a constant speed (such as image 3 shown), blow dry with nitrogen flow, and anneal at 200°C for 10 minutes to prepare electron transport layer 4;

[0043] Prepare CH 3 NH 3 I and PbCl 2 mixed solution of PbCl 2 The concentration is 1 mole / liter, then add the ionic liquid additive MY of precursor solution 10wt% (wherein A is ethylmethylamine salt cation, Y is formate ion; CH 3 NH 3 I and PbCl 2 The molar ratio is 3:1, the solvent is dimethylformamide and water, the volume ratio is 20:1), CH 3 NH 3 I. ...

Embodiment 3

[0047] see figure 1 and Figure 3-4 , a method for preparing a flexible large-area perovskite solar cell based on a roll coating process, comprising the following steps:

[0048] Treat polyethylene naphthalate (PEN) flexible substrate: treat the cleaned flexible conductive substrate with oxygen plasma;

[0049] Prepare the electron transport layer on the flexible conductive substrate by roll coating process: add nano-ZnO solution, roll coating at a constant speed immediately (such as image 3 shown), and dried with nitrogen flow, and annealed at 110° C. for 20 minutes to obtain an electron transport layer 4;

[0050] Prepare PbBr at a concentration of 1 mol / L 2 solution, add 0.1wt% ionic liquid additive MY (wherein, M is methylamidine salt cation, Y is propionate ion, and the solvent is N-methylpyrrolidone). First roll coat a layer of PbBr 2 After the mixed solution of MY and MY is naturally dried, roll-coat a solution of formamidine bromide with a concentration of 0.5 mo...

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 preparing a flexible large-area perovskite solar cell based on a roller coating process, which comprises the following steps: 1. processing a flexible conductive substrate; Transport layer, perovskite absorbing layer, hole transport layer, or sequentially prepare hole transport layer, perovskite absorbing layer, electron transport layer on a flexible conductive substrate by roll coating process; 3. Preparation of top electrode and bottom electrode , made perovskite solar cells. By adjusting the parameters of the roller coating process, the present invention can effectively solve technical problems such as easy deformation of the flexible substrate, poor perovskite crystal quality and uneven thickness; improve the uniformity and flatness of the coating film, and can realize flexible, especially large-area perovskite solar coatings. The preparation of the battery expands the application scenarios of perovskite solar cells; this method is expected to realize the rapid, low-cost, roll-to-roll production of large-area perovskite solar cells on flexible substrates.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a method for preparing a flexible large-area perovskite solar cell based on a roll coating process. Background technique [0002] Since 2009, perovskite solar cells have achieved rapid development. The photoelectric conversion efficiency of perovskite solar cells on rigid substrates has exceeded 22%, and the photoelectric conversion efficiency of perovskite solar cells on flexible substrates has exceeded 16%. [0003] At present, in the preparation of perovskite batteries, rigid glass substrates are still the main method. Because of their smooth surface, the prepared perovskite batteries have high repeatability, but glass substrates have the disadvantages of being fragile, heavy, and unable to bend. , limiting its application scenarios. Perovskite solar cells with flexible substrates have the advantages of impact resistance, light weight, bendability, and portabil...

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 Patents(China)
IPC IPC(8): H01L51/42H01L51/00H01L51/48
CPCH10K71/12H10K77/111H10K30/15Y02E10/549
Inventor 李跃龙辛晨光张晓丹赵颖
Owner NANKAI UNIV
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