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Preparation method of in-situ quick-drying crystallization of liquid-film cold-based anti-climbing heat-resistant adhesive coating film of suede uniform perovskite film

A technology of perovskite and perovskite precursors, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve the problem of reducing the photoelectric conversion efficiency of silicon solar cells, increasing the production cost of stacked solar cells, and photoelectric conversion Efficiency reduction and other issues

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with silicon cells with pyramid textured light-trapping structures, the photoelectric conversion efficiency of silicon solar cells after polishing decreases to about 50% of the original value
Therefore, there are following deficiencies in this technical solution: first, the photoelectric conversion efficiency of silicon solar cells is greatly reduced by polishing and smoothing the silicon pyramid textured surface; Production cost, increased process and time, reduced production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a uniform perovskite film on a suede surface, comprising:

[0026] (1) Preparation of perovskite precursor sol: using DMF as solvent, PbI 2 and CH 3 NH 3 I is the solute, and the perovskite sol is prepared, and the CH in the perovskite sol 3 NH 3 PB 3 The mass percentage concentration is 35%.

[0027] (2) Pre-cooling of the substrate and pre-heating of the sol or solution: use low-temperature refrigeration to keep the temperature of the silicon solar cell with pyramid texture at 0°C, and use heating to keep the temperature of the perovskite precursor sol Keep at 70°C;

[0028] (3) Uniform coating and in-situ crystallization of perovskite liquid film: Coating the hot sol or solution of perovskite precursor on the cold substrate with pyramid texture to form a profiling perovskite liquid film; The thickness of the profiled perovskite liquid film is less than 60% of the average characteristic height of the pyramid; the significant cooling of th...

Embodiment 2

[0031] A method for preparing a uniform perovskite film on a suede surface, comprising:

[0032] (1) Preparation of perovskite precursor sol: using DMSO as solvent, PbI 2 and CH 3 NH 3 I is the solute, and the perovskite sol is prepared, and the CH in the perovskite sol 3 NH 3 PB 3 The mass percentage concentration is 30%.

[0033] (2) Pre-cooling of the substrate and pre-heating of the sol or solution: the temperature of the silicon solar cell with pyramidal texture is kept at -20°C by cryogenic refrigeration, and the temperature of the perovskite precursor sol is kept by heating. The temperature is kept at 100°C;

[0034] (3) Uniform coating and in-situ crystallization of perovskite liquid film: Coating the hot sol or solution of perovskite precursor on the cold substrate with pyramid texture to form a profiling perovskite liquid film ; The thickness of the profiled perovskite liquid film is less than 60% of the average characteristic height of the pyramid; the signif...

Embodiment 3

[0037] A method for preparing a uniform perovskite film on a suede surface, comprising:

[0038] (1) Preparation of perovskite precursor sol: using DMF as solvent, PbI 2 and CH 3 NH 3I is the solute, and the perovskite sol is prepared, and the CH in the perovskite sol 3 NH 3 PB 3 The mass percentage concentration is 35%.

[0039] (2) Pre-cooling of the substrate and pre-heating of the sol or solution: use low-temperature refrigeration to keep the temperature of the silicon solar cell with pyramid texture at 0°C, and use heating to keep the temperature of the perovskite precursor sol Keep at 50°C;

[0040] (3) Uniform coating and in-situ crystallization of perovskite liquid film: Coating the hot sol or solution of perovskite precursor on the cold substrate with pyramid texture to form a profiling perovskite liquid film; The thickness of the profiled perovskite liquid film is less than 60% of the average characteristic height of the pyramid; the significant cooling of the...

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Abstract

The invention provides a preparation method for in-situ quick-drying and crystallization of a liquid-film cold-based anti-climbing thermal glue coating film with a uniform perovskite film on a suede surface, comprising: the first step, pre-cooling treatment of the substrate and preheating treatment of the sol; The second step is the uniform coating and in-situ crystallization of the perovskite liquid film: the perovskite precursor hot-sol is coated on the cold substrate with a pyramid texture to form a profiling perovskite liquid film; The temperature of the perovskite liquid film is significantly lowered to quickly supersaturate the solute in the liquid film, so that the perovskite crystallizes in situ and obtains the perovskite film; the third step is heat treatment of the perovskite film to remove the residual solvent and Make the crystal grains grow up to obtain a uniform perovskite film with full coverage and imitation pyramid shape. Under the condition that the silicon pyramid textured surface is not polished and flattened, the present invention adopts the solution deposition method to realize the preparation of a fully covered and uniform profiled perovskite film on the micron-scale undulating pyramid textured substrate, maintaining the silicon solar cell The advantage of high efficiency.

Description

technical field [0001] The invention belongs to the technical field of silicon-perovskite laminated solar cell preparation, and in particular relates to a method for preparing a perovskite film. Background technique [0002] Solar energy is a green, safe, inexhaustible and inexhaustible energy source. Solar cell technology is an effective way of utilizing solar energy. It is an important measure to solve energy problems and environmental pollution and realize green and sustainable development. It is of great significance to solve energy and environmental problems in the process of human development. Organic-inorganic hybrid perovskite solar cells have attracted extensive attention from academia and industry around the world in recent years because of their advantages such as ultra-high photoelectric conversion efficiency, simple and inexpensive preparation process and equipment, and low-temperature preparation by solution method. As of November 2018, the highest efficiency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/42
CPCH10K71/12H10K71/40H10K30/10Y02E10/549
Inventor 杨冠军李小磊刘梅军刘研丁斌李长久李成新
Owner XI AN JIAOTONG UNIV
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