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

Two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquid

A technology of solar cells and ionic liquids, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems affecting the stability and service life of solar cell devices, hindering the commercial development of carbon-based perovskite solar cells, and the photoelectric conversion efficiency is only For 6. and other issues, to achieve good market prospects and application value, maintain long-term stability and efficiency, and accelerate the effect of commercial development

Active Publication Date: 2019-11-22
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2013, Huazhong University of Science and Technology Han et al. (Ku Z, Rong Y, Xu M, Liu T, Han H 2013 Sci.Rep.33132) used carbon materials as battery counter electrodes for the first time to prepare perovskite without hole transport layer solar cells, but the photoelectric conversion efficiency of the cell is only 6.64%, which is significantly lower than that of metal-based perovskite solar cells
For example, in 2016, the research team of Dalian University of Technology (F Zhang, X Yang, M Cheng, W Wang, L Sun Nano Energy 20, 108-116) used CuPc material as the hole transport layer and commercial carbon paste as the counter electrode to obtain high-efficiency solar cells. , but the efficiency of carbon-based perovskite solar cells without a hole-transport layer is only 9%
In the same year, Hong Kong University of Science and Technology Yang et al. (Chen H, Wei Z, He H, Zheng X, Wong KS, Yang S 2016 Adv. Energy Mater. 61502087) used cyclohexane to modify the perovskite precursor solution so that there were no holes The carbon electrode structure efficiency of the transport layer reaches 14.34%, but the MAPbI 3 Based on perovskite solar cells, the efficiency is only 9.75%
[0005] In addition, perovskite materials, as an emerging photosensitive material, still have the following deficiencies, such as poor stability of organometallic lead halide perovskite materials, and sensitivity to air environment. The performance drops sharply, which seriously affects the stability and service life of solar cell devices, hindering the commercial development of carbon-based perovskite 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
  • Two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquid
  • Two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquid
  • Two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] like figure 1 Shown, is a kind of preparation method of hydrophobic aminoquinoline ionic liquid 1-ethylamine hydroiodide quinoline bistrifluoromethanesulfonimide salt, comprising the steps:

[0057] S1. Add 2.05g of 2-bromoethylamine hydrobromide and 1.29g of quinoline to 50ml of absolute ethanol in sequence. Under nitrogen protection, react at 75°C for 48h until a large amount of white solids are formed. After cooling to room temperature , centrifuged to remove the solvent, and the solid was washed three times with absolute ethanol to remove unreacted raw materials attached to the surface of the product, and dried in vacuum for 24 hours;

[0058] S2. Dissolve the solid product obtained in step S1 in deionized water, then add an equimolar amount of lithium bistrifluoromethanesulfonyl imide, stir and react for 4-6 hours, remove the upper aqueous phase after the reaction, and collect the oily liquid And wash with deionized water several times, and the yellow oily liquid ...

Embodiment 2

[0064] like Figure 7 As shown, this embodiment provides a two-dimensional carbon-based perovskite solar cell based on an aminoquinoline ionic liquid, and the perovskite solar cell includes a transparent conductive electrode, an electron transport layer, Mesoporous layer, perovskite light absorbing layer and counter electrode.

[0065] Wherein, the transparent conductive electrode is FTO conductive glass; the electron transport layer is TiO 2 ; The mesoporous layer is TiO 2 ; The perovskite light absorbing layer is (ILNTF 2 ) 2 (CH 3 NH 3 ) 9 Pb 10 I 31 ; The counter electrode is a carbon electrode.

[0066] The above-mentioned preparation method of a two-dimensional carbon-based perovskite solar cell based on an aminoquinoline ionic liquid comprises the following steps:

[0067] 1) Pretreatment of FTO conductive glass: ultrasonically clean the etched FTO conductive glass with deionized water, acetone, and isopropanol for 15 minutes, then blow dry with nitrogen, and ...

Embodiment 3-10

[0077] Embodiments 3-10 provide a two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquids. Compared with Example 2, the difference is that the preparation of the two-dimensional carbon-based perovskite solar cell is changed Method step 2) in TiO 2 The hydrothermal reaction temperature and reaction time in the preparation process of the electron transport layer, except for the above differences, other operations are the same, and will not be repeated here; the specific experimental conditions and parameters are shown in the table below.

[0078]

[0079]

[0080] The results of the photoelectric conversion efficiency of the two-dimensional carbon-based perovskite solar cell devices prepared in Examples 2 to 10 are as follows: Figure 9 As shown in (a) and (b), it can be seen from the results in the figure that the performance of the two-dimensional carbon-based perovskite solar cell device prepared when the reaction temperature is 70 °C an...

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
Average sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a two-dimensional carbon-based perovskite solar cell based on aminoquinoline ionic liquid. The cell comprises a transparent conductive electrode, an electron transport layer, amesoporous layer, a perovskite light absorption layer and a counter electrode which are sequentially stacked from bottom to top. The preparation method comprises the following steps: hydrophobic ionic liquid 1-ethylamine hydriodate quinoline bis (trifluoromethanesulfonyl) imide ([ILNTF2] < + > I <->), CH<3>NH<3>I and lead halide are as raw materials so that a novel two-dimensional perovskite material is successfully prepared, and a perovskite solar cell taking [ILNTF<2>]<2>(CH<3>NH<3>)<9>Pb<10>X<31> as a light absorption layer is prepared through a one-step spin-coating method. According to the invention, the hydrophobic ionic liquid 1-ethylamine hydriodate quinoline bis (trifluoromethanesulfonyl) imide is combined with lead halide to form a perovskite structure to be introduced into a perovskite solar cell system, and the prepared perovskite cell has the advantages of convenience, simplicity, economy, strong stability, high photoelectric conversion efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of solar cell preparation, in particular to a two-dimensional carbon-based perovskite solar cell based on an aminoquinoline ionic liquid. Background technique [0002] Metal halide perovskite solar cells have attracted much attention due to their direct bandgap, high extinction coefficient, high carrier mobility, small exciton binding energy, and long carrier diffusion length. Rapid development, cell efficiency increased from 3.8% to 24.2% in just 10 years. With the continuous improvement of cell efficiency, the stability and production cost of perovskite solar cells have become more and more widely concerned by researchers. However, the use of expensive metal electrodes as counter electrodes is not only costly, but also requires high-energy-consuming processes such as vacuum evaporation and expensive hole-transporting materials. Therefore, materials with low prices and stable performance are sought to repl...

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): H01L51/42H01L51/46H01L51/48C07D215/06C07C303/40C07C311/48
CPCC07D215/06C07C303/40H10K85/00H10K30/10C07C311/48Y02E10/549
Inventor 李春涯周雪王炎英
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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