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

Perovskite solar cell capable of being rapidly annealed in air and preparation method of perovskite solar cell

A solar cell and rapid annealing technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of unfavorable perovskite film formation and easy decomposition, achieve enhanced crystallinity, large grain size, and reduce production costs Effect

Pending Publication Date: 2022-01-07
WUHAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another major reason why it is difficult to obtain high-quality perovskite films in ambient air may be that thermal annealing usually induces non-uniform nucleation, which is not conducive to the formation of perovskite films.
At the same time, perovskite is prone to decomposition due to the volatility of its organic components during thermal annealing.

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 solar cell capable of being rapidly annealed in air and preparation method of perovskite solar cell
  • Perovskite solar cell capable of being rapidly annealed in air and preparation method of perovskite solar cell
  • Perovskite solar cell capable of being rapidly annealed in air and preparation method of perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this embodiment, a method for preparing a perovskite solar cell rapidly annealed in air comprises the following steps:

[0042] S1: Substrate cleaning: Cut a large piece of conductive glass FTO into a size of 1.5×2cm with a glass knife, wipe the surface of the conductive substrate with acetone, and then place it in deionized water, acetone, isopropanol and ethanol in sequence. Ultrasonic cleaning for 20 minutes, drying with a nitrogen gun, and then UV and ozone treatment for 15 minutes.

[0043] S2: Electron transport layer preparation: Commercial 15% SnO 2 The colloidal aqueous solution and deionized water were prepared at a mass ratio of 1:5 to make 2.5% SnO 2 Colloidal solution, stirred for half an hour and set aside. Pipette 100 μl of SnO 2 The precursor solution was evenly dropped on the treated FTO transparent conductive substrate. The spin coating conditions were low speed 500rpm for 10s, high speed 4000rpm for 30s, and annealed on a heating plate at 150°C ...

Embodiment 2

[0052] In this embodiment, a method for preparing a perovskite solar cell rapidly annealed in air, the difference between this embodiment and embodiment 1 is:

[0053] Preparation of perovskite light-absorbing layer: pure PbI 2 Dissolve MAI in a mixed solvent of dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) at a molar ratio of 1:1 (V 1 :V 2 =4:1), in which MASCN was added at a molar ratio of 60%, and then stirred overnight at a temperature of 60°C to obtain five perovskite precursor solutions with a concentration of 1.3M and different doping ratios. After the stirring was completed, The solution was filtered. Use a pipette to draw 50 μl of the perovskite precursor solution and evenly spread it on the UV-ozone-treated SnO 2 On the electron transport layer substrate, spin-coat at 4000rpm for 30s, and drop EA evenly and rapidly at the 15th s of spin-coating. The perovskite mesophase film was annealed for 0min, 3min, 5min, 7min, 10min and 30min respectively to obtain t...

Embodiment 3

[0057] In this embodiment, a method for preparing a perovskite solar cell rapidly annealed in air, the difference between this embodiment and embodiment 1 is:

[0058] Preparation of perovskite light-absorbing layer: pure PbI 2 Dissolve MAI in a mixed solvent of dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) at a molar ratio of 1:1 (V 1 :V 2 =9:1), wherein MASCN was added in a molar ratio of 60%, and then stirred overnight at 60°C to obtain five perovskite precursor solutions with a concentration of 1.25M in different doping ratios. After the stirring was completed, the solution was filter. Use a pipette to draw 50 μl of the perovskite precursor solution and evenly spread it on the UV-ozone-treated SnO 2 Spin-coat on the electron transport layer at a speed of 5000rpm for 30s, and drop EA evenly and rapidly at the 17th s from the start of spin-coating. The perovskite mesophase film was annealed for 0min, 3min, 5min, 7min, 10min and 30min respectively to obtain the pe...

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
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a perovskite solar cell capable of being rapidly annealed in air and a preparation method of the perovskite solar cell. The structure of the perovskite solar cell sequentially comprises transparent conductive glass, an electron transport layer, a perovskite light absorption layer, a passivation layer, a hole transport layer and a metal electrode layer from bottom to top. The preparation process of the perovskite light absorption layer in the air does not need to control the environment humidity, and the cost of large-scale industrialization of the perovskite solar cell is greatly reduced. Particularly, when the doping proportion of MASCN serving as a doping agent in the perovskite light absorption layer reaches the optimal, the crystallinity of the perovskite thin film is remarkably enhanced, the perovskite thin film has the characteristics of large grain size and single orientation of the (110) crystal face direction, and the efficient and stable perovskite solar cell can be prepared only by extremely short annealing time.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell rapidly annealed in air and a preparation method thereof. Background technique [0002] The utilization of renewable and clean energy is an effective means to solve future energy shortages and environmental problems. Manufacturing solar cells with high photoelectric conversion efficiency, low cost, and environmental safety is a challenge in the energy field. Hybrid lead halide perovskite solar cells (PSCs) have attracted much attention as next-generation commercial photovoltaic materials due to their simple structure, low fabrication cost, and excellent photovoltaic performance. In recent years, the power conversion efficiency (PCE) of PSCs has increased rapidly from 3.8% to more than 25%, and the preparation of high-quality perovskite thin films is the key to obtaining high conversion efficiency perovskite solar cells. [0003] Compared w...

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): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K71/40H10K85/30H10K30/30Y02E10/549
Inventor 台启东王珍朱振坤
Owner WUHAN UNIV
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