High-quality inorganic perovskite film, preparation method thereof and application of high-quality inorganic perovskite film to solar cells

A technology for solar cells and inorganic calcium, applied in the field of solar cells, can solve the problems of affecting the photoelectric conversion performance of the thickness of the inorganic perovskite thin film, unable to prepare a precursor solution, unable to prepare a thin film, etc., so as to improve the short-circuit current density and the preparation steps are simple. , the effect of improving solubility

Active Publication Date: 2017-09-26
INST OF CHEM CHINESE ACAD OF SCI +1
View PDF6 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simple one-step method using DMF as solvent cannot prepare uniform CsPbI 2 Br film, and because of the limited solubility of CsBr in DMF, it is imposs

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
  • High-quality inorganic perovskite film, preparation method thereof and application of high-quality inorganic perovskite film to solar cells
  • High-quality inorganic perovskite film, preparation method thereof and application of high-quality inorganic perovskite film to solar cells
  • High-quality inorganic perovskite film, preparation method thereof and application of high-quality inorganic perovskite film to solar cells

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0067] Example 1

[0068] Preparation of High Quality Inorganic Perovskite Film

[0069] Choose PbI 2 And CsBr is the precursor raw material of inorganic perovskite material, according to 0.67mmol PbI 2 And 0.67mmol CsBr were dissolved in 1ml of a mixed solvent of DMF and DMSO, where the volume ratio of DMF and DMSO was 9:1, and stirred for 2h to prepare a solution with a concentration of 0.67mol / L of the inorganic perovskite precursor solution.

[0070] The above solution was evenly coated on the FTO glass substrate, and spin-coated at a speed of 1500 rpm for 30 seconds to obtain a colorless and transparent film.

[0071] The film is transferred to a 70°C hot stage and annealed for 3 minutes, and the film turns yellowish brown, then transferred to a 290°C hot stage and annealed for 10 minutes, and then removed and cooled to prepare a high-quality inorganic perovskite film.

[0072] The thickness of the high-quality inorganic perovskite film prepared in this embodiment is 400 nm to 450 ...

Example Embodiment

[0077] Example 2

[0078] Preparation and performance testing of high-quality perovskite thin film solar cell devices

[0079] Using spray pyrolysis technology, the volume ratio of spray pyrolysis on the clean commercial transparent conductive substrate FTO (the thickness of the coating is about 450nm ~ 500nm, the sheet resistance of the substrate is about 14Ω / □, and the light transmittance is 90%) is 1:1. Precursor solution of isopropoxy titanium diacetylacetonate mixed with ethanol. Then sintered at 500℃ for 60 minutes to form TiO 2 Dense layer.

[0080] According to the method described in Example 1, a high-quality perovskite film was prepared on the above-mentioned substrate as an absorption layer.

[0081] The hole transport layer P3HT is prepared on the perovskite film (absorption layer) using a spin coating method.

[0082] A vacuum thermal evaporation method was used to prepare an 80nm thick gold layer as the top electrode of the device.

[0083] The I-V curve was tested with N...

Example Embodiment

[0085] Example 3

[0086] Preparation of High Quality Inorganic Perovskite Film

[0087] The preparation method is the same as in Example 1, except that the volume ratio of DMSO and DMF in the mixed solvent of DMSO and DMF is 1:3.

[0088] Preparation and performance testing of high-quality perovskite thin film solar cell devices.

[0089] The preparation method is the same as in Example 2.

[0090] The photoelectric conversion efficiency of the solar cell of the perovskite thin film prepared in this embodiment is 6.86%.

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
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-quality inorganic perovskite film, a preparation method thereof and an application of the high-quality inorganic perovskite film as an absorbing layer to solar cells. A good solvent of an inorganic perovskite precursor and a mixed solvent of an organic solvent with volatility slower than that of the good solvent and capacity of increasing solubility of the precursor are introduced in the preparation process of the high-quality inorganic perovskite film; the uniform, dense and continuous inorganic perovskite film can be obtained by adjusting a ratio of the two solvents according to the characteristics that the mixed solvent is slower to volatilize and can increase the solubility of the precursor, the concentration of an inorganic perovskite material precursor solution can be remarkably increased by the mixed solvent, and the short-circuit current density of the inorganic perovskite solar cells prepared from the inorganic perovskite film is increased. The preparation method has the advantages of adopting mild preparation conditions and simple preparation steps, being convenient to operate, low in cost, low in energy consumption and the like, and the preparation method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a high-quality inorganic perovskite thin film, a preparation method thereof, and an application as an absorbing layer in thin-film solar cells. Background technique [0002] With the rapid development of industrialization in contemporary society, the increasingly serious energy and environmental problems have accelerated the development and utilization of new energy technologies. Solar energy has attracted widespread attention due to its abundant resource reserves, clean and environmental protection, and as a photoelectric conversion device. Solar cells have become the focus of research. In recent years, the performance of perovskite solar cells has improved rapidly, becoming the most promising third-generation solar cells to replace silicon solar cells and copper indium gallium selenide solar cells. Since Miyasaka and his colleagues reported organic-inorganic hybrid perov...

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): H01L31/0216H01L31/0264
CPCH01L31/02167H01L31/0264Y02E10/50
Inventor 胡劲松刘杰葛倩庆
Owner INST OF CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap