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

A kind of electron transport layer material and perovskite solar cell

An electron transport layer, solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as being unsuitable for industrialized large-scale production, difficult to purify, and complicated to synthesize fullerene derivatives, so as to improve the current carrying capacity. Sub-transmission capability, high absorption coefficient, wide absorption effect

Active Publication Date: 2017-12-01
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the electron transport layer materials of perovskite solar cells reported before, titanium oxide and fullerene derivatives PCBM are mainly used, but most titanium oxide materials require high-temperature processing, and the synthesis process of fullerene derivatives is complicated, and the purification process is difficult. Difficult, not suitable for large-scale industrial production

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 kind of electron transport layer material and perovskite solar cell
  • A kind of electron transport layer material and perovskite solar cell
  • A kind of electron transport layer material and perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Preparation of poly{2,7-[N,N'-bis(2-ethylhexane)-1,7-dithiophene-perylenetetracarboxylic diimide]-co-2,7-[9,9 '-Di(6-N,N-diethylamino-hexyl)fluorene]} (referred to as NDIT-F6N)

[0036] The synthetic route is as follows:

[0037]

[0038] (1) Monomer 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaboryl)-9,9'-bis(6-N,N- Diethylamino-hexyl)fluorene] was prepared according to the method disclosed in the literature (Adv. Mater., 2011, 23, 1665). Monomer 2,7-dibromo-N,N'-bis(2-ethylhexane)-1,7-dithiophene-perylenetetracarboxylic acid diimide is according to literature (Chem.Mater.,2011, 23,4563) disclosed method preparation.

[0039] (2) The monomer 2,7-dibromo-N,N'-bis(2-ethylhexane)-1,7-dithiophene-perylenetetracarboxylic acid diimide (0.25mmol), 2, 7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborinyl)-9,9'-bis(6-N,N-diethylamino-hexyl) ) fluorene] (0.25mmol) and 9mg three (dibenzylidene acetone) dipalladium and 23mg three (o-methylphenyl) phosphine catalysts are dissolved in the m...

Embodiment 2

[0043] Preparation of photoactive layer materials:

[0044] The CH of the compound I 3 NH 3 The synthesis of I was prepared according to the method disclosed in the literature (J.Am.Chem.Soc.2012, 134, 17396). CH 3 NH 3 PB 3-x Cl x The synthesis of CH 3 NH 3 I, PbI 2 and PbCl 2 Co-dissolved in DMF (N, N-dimethylformamide) or other organic solvents, the specific details are as follows:

[0045] Take CH 3 NH 3 I, PbI 2 and PbCl 2 (The ratio is 4:1:1) was blended and dissolved in 1mL DMF to prepare a solution with a mass fraction of 40%, heated to 60°C, and stirred for 12 hours to obtain a photoactive layer material precursor solution.

[0046] Compound I (CH 3 NH 3 I) and compound II (PbI 2 :PbCl 2 =1:1) mixed at a ratio of 2:1, dissolved in an organic solvent, and then formed a photoactive layer by spin coating.

Embodiment 3

[0048] Preparation of organic-inorganic planar heterojunction solar cells:

[0049] Some ITO conductive glass, the square resistance is about 20 ohms / square, and the specification is 15 mm x 15 mm square. Use acetone, micron-scale semiconductor special detergent, deionized water, and isopropanol to ultrasonically clean for more than half an hour, and place in a constant temperature oven for later use. Before use, ITO glass slides were treated in oxygen plasma for 4 min. PEDOT:PSS (polyethylene dioxythiophene) aqueous dispersion (purchased from Bayer, Clevios P ​​VP AI4083) was used as the hole transport layer, and was spin-coated on ITO at high speed with a homogenizer (KW-4A), and the film thickness About 40 nanometers is better, and the thickness is determined by the concentration of the solution and the rotational speed. It is measured and monitored with a surface profiler (Alpha-Tencor-500 type of Tritek Company). After film formation, heat at 150°C for 20 minutes in the...

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
molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of optoelectronic devices, and discloses an electron transport layer material and a perovskite solar cell. The perovskite solar cell includes an anode, a hole transport layer, a photoactive layer, an electron transport layer and a cathode. The material of the photoactive layer is a solution-processable organic-inorganic hybrid battery material with a perovskite structure, and the material of the electron transport layer has the following structure; Applied in the electron transport layer materials of perovskite solar cells, replacing PCBM or TiO2, etc., can reduce the cost of device manufacturing; and the polymers containing strong polar group side chains play a significant role in modifying the cathode interface, improving Carrier transport ability, better device performance was obtained.

Description

technical field [0001] The invention belongs to the technical field of photoelectric devices, and relates to an electron transport layer material and a perovskite solar cell prepared by using the material. Background technique [0002] With the rapid growth of population and the continuous development of industrialization, problems such as environmental pollution and energy crisis have become more and more serious, and the research and development of renewable energy represented by solar energy has become a top priority. Solar cells based on inorganic materials such as inorganic silicon, gallium arsenide, and cadmium telluride, which are becoming more mature, have already occupied a dominant position in the market. However, due to the problems of heavy metal pollution and rare elements in the processing process, they are expensive and difficult to Large-scale production and manufacturing of flexible devices, in the pursuit of low cost and green environmental protection in mo...

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): C08G61/12H01L51/42H01L51/46
CPCY02E10/549
Inventor 黄飞孙辰吴志鸿叶轩立曹镛
Owner SOUTH CHINA UNIV OF TECH
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