Unlock instant, AI-driven research and patent intelligence for your innovation.

Application of interface molecule with multifunctional active sites

An active site, multi-functional technology, applied in the field of solar cells, can solve the problem of single action site of passivation molecules, achieve the effect of promoting large-scale and commercialization process, reducing film defects, and improving humidity stability

Pending Publication Date: 2022-05-13
SHANXI UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only passivate the defects of the perovskite film, and the action site of the passivation molecule is relatively single
Such molecules with single-site passivation abound, so the work is still very limited

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
  • Application of interface molecule with multifunctional active sites
  • Application of interface molecule with multifunctional active sites
  • Application of interface molecule with multifunctional active sites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Method for preparing perovskite solar cells:

[0039] The difference from the comparison example is that the following operations need to be performed before step (4):

[0040] A4 molecules were dissolved in isopropanol to prepare a modification layer solution with a concentration of 0.5 mg / mL, and then spin-coated on the perovskite film under the conditions: 5000rpm, 30s. No annealing is required after spin coating to obtain a modified layer.

[0041]

[0042] figure 1 In order to compare the current-voltage forward sweep curves of perovskite solar cells in Example 1 and Example 1, and obtain each photovoltaic parameter of the two kinds of batteries according to the figure, the results are shown in Table 1, by figure 1 It can be seen from Table 1 that the efficiency of the perovskite solar cell in Example 1 is significantly improved.

[0043] Table 1

[0044]

[0045] figure 2 In order to compare the defects of the light-absorbing layer of the perovskite so...

Embodiment 2

[0051] The difference from Example 1 is that the modified molecule A4 is replaced by A8, the concentration is 10mg / mL, the rotation speed is 6000rpm, and annealing at 25°C for 60min is required after the spin coating.

[0052]

[0053]

[0054] Figure 7 It is the current-voltage forward sweep curve of the perovskite solar cell in Example 2. It can be seen that the efficiency of the cell is 21.06%. Compared with the efficiency of the cell in the comparative example (20.83%), the device efficiency is significantly improved.

Embodiment 3

[0056] The difference from Example 1 is that the electron transport layer used in step (2) is titanium dioxide.

[0057] Figure 8 It is the current-voltage forward sweep curve of the perovskite solar cell in Example 3. It can be seen that the efficiency of the cell is 21.25%, which is significantly improved compared to the efficiency of the cell in the comparative example (20.83%).

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of solar cells, and particularly relates to application of an interface molecule with multifunctional active sites. In order to solve the problem that action sites of passivation molecules are relatively single, interface molecules are compounds containing at least three groups of S,-C = O,-NH2, N, O and F at the same time, and the interface molecules are spin-coated on a perovskite layer, so that film defects of the perovskite layer are effectively reduced, the average carrier lifetime of the perovskite film is prolonged, and the performance of the perovskite film is improved. Compared with the prior art, the perovskite solar cell has the advantages that the interface recombination loss of the device is reduced, the roughness of the perovskite thin film is reduced, and the energy level arrangement of the device is improved, so that the power conversion efficiency of the solar device is improved, the humidity stability and the lead leakage condition of the device are remarkably improved, and the large-scale and commercial process of the perovskite solar cell is promoted.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to the application of an interface molecule with multifunctional active sites. Background technique [0002] In recent years, organic-inorganic hybrid metal halide perovskite solar cells (PSCs) have been attracting people's attention due to their advantages of simple fabrication, low cost, adjustable bandgap, and high molar absorption. New solar material with potential to replace silicon. Currently, single-junction PSCs have achieved power conversion efficiencies (PCEs) of 25.7%. However, due to its rapid crystallization, a large number of defects are generated, which leads to the increase of non-radiative recombination, which is very unfavorable for the realization of high PCE and high stability of PSCs. Therefore, there is an urgent need to develop novel organic molecules to reduce interfacial recombination and thus improve the efficiency of perovskite solar cell...

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 Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K85/656H10K85/654H10K30/15Y02E10/549
Inventor 毕欢侯文静韩高义
Owner SHANXI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com