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

Inorganic perovskite solar cell based on substituted hydrazide and preparation method thereof

A technology of solar cells and inorganic calcium, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of perovskite film defects, poor optoelectronic properties, and non-radiative recombination.

Pending Publication Date: 2022-07-08
SHAANXI NORMAL UNIV
View PDF0 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 overcome the shortcoming of above-mentioned prior art, provide a kind of inorganic perovskite solar cell based on substituted hydrazide and preparation method thereof, to solve the problem of inorganic CsPbI 3 The open circuit voltage loss of perovskite solar cells is large and the internal defects of perovskite films cause more non-radiative recombination, resulting in poor photoelectric performance.

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
  • Inorganic perovskite solar cell based on substituted hydrazide and preparation method thereof
  • Inorganic perovskite solar cell based on substituted hydrazide and preparation method thereof
  • Inorganic perovskite solar cell based on substituted hydrazide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] First, clean the conductive glass substrate: use a mixture of ultrapure water and glass cleaning agent v / v=100:1 to clean the conductive glass FTO substrate for 30 minutes, and then change the ultrapure water for 3 times, each cleaning for 30 minutes, with air The compressor will dry the cleaned conductive glass FTO substrate for use.

[0072] Second, prepare the electron transport layer on the prepared conductive glass FTO substrate: UV-ozone treatment of the FTO substrate for 10-15min, and then TiCl 4 Aqueous solution to deposit a layer of TiO on FTO substrate by water bath deposition method 2 As the electron transport layer, the deposition temperature was 70 °C and the deposition time was 60 min.

[0073] Third, prepare the perovskite precursor solution: prepare CsPbI with a concentration of 0.745M 3 Perovskite precursor solution. 0.4387g HPbI 3 and 0.1935g CsI were dissolved in a mixed solution of DMF and DMSO with a volume ratio of 17:3 to prepare inorganic CsP...

Embodiment 2

[0099] In this example, the prepared CsPbI 3 Perovskite precursor solution, the addition content of BH is 1.5%. Other steps are the same as in Example 1. In this example, the 1.5% BH-added perovskite cell device has an open circuit voltage of 1.200 V and a photoelectric conversion efficiency of 19.68%.

Embodiment 3

[0101] In this example, the prepared CsPbI 3 Perovskite precursor solution, the addition content of BH is 6%. Other steps are the same as in Example 1. In this example, the 6% BH-added perovskite cell device has an open circuit voltage of 1.196 V and a photoelectric conversion efficiency of 19.30%.

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an inorganic perovskite solar cell based on substituted hydrazide and a preparation method thereof, a perovskite light absorption layer in the perovskite solar cell contains a complex of substituted hydrazide and Pb < 2 + >, and the complex is a four-membered ring or five-membered ring structure formed by-NH-NH2, C = O and Pb in the substituted hydrazide, so that the Pb is combined in the middle by-NH-NH2 and C = O, and the Pb in the perovskite light absorption layer is more than the Pb in the perovskite light absorption layer. -NH-NH2 and C = O can cooperate with Pb < 2 + > to form a strong coordination effect, passivate uncoordinated Pb < 2 + > vacancies in perovskite, form stable coordination bonds and inhibit generation of Pb < 0 >; -NH2 at the tail end in substituted hydrazide can also form a hydrogen bond with I <-> to inhibit migration of iodide ions in the film. The existence of the complex can reduce the internal defects of the CsPbI3 perovskite film, thereby reducing the non-radiative recombination loss caused by the defects, and improving the efficiency and stability of the inorganic perovskite battery.

Description

technical field [0001] The invention belongs to the technical field of perovskite solar energy preparation, and in particular relates to an inorganic perovskite solar cell based on a substituted hydrazide and a preparation method thereof. Background technique [0002] Traditional fossil energy reserves are limited and non-renewable, and the use process will bring huge environmental pollution. Therefore, clean and renewable solar energy has become a research hotspot. Among them, solar cells that directly convert solar energy into electrical energy have received the most attention. Perovskite solar cells combine low cost, low temperature solution processing and their excellent optoelectronic properties (strong broadband light absorption, smaller exciton binding energy, longer charge carrier transport distance and lifetime), It has become a thin-film battery with commercial prospects. In just a few years, the efficiency of perovskite solar cells has increased from 3.8% in 20...

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
CPCH10K71/12H10K71/40H10K85/30H10K30/10H10K2102/00Y02E10/549
Inventor 刘治科车宇航段玉伟王俊刚杨少敏刘生忠
Owner SHAANXI NORMAL 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