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A kind of preparation method of the film material of perovskite structure

A technology of perovskite structure and thin-film materials, which is applied in metal material coating process, liquid chemical plating, coating, etc., can solve problems that have not been disclosed in detail

Active Publication Date: 2017-10-20
东营市东凯新材料技术研发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there are a lot of research and application in microcapsules, the method of blending and secondary reaction through microcapsules is still not disclosed in detail.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Microencapsulation precursor:

[0040] 20gPbCl 2Add in 15g tetraethyl orthosilicate and mix, obtain the first oily phase, additionally 11gCH 3 NH 3 1 is added in 15g tetraethyl orthosilicate and mixes, obtains the second oil phase, adds 7g water, 0.03g sodium lauryl sulfate, 0.015g sodium lauryl sulfate in the first oil phase, fully stirs After obtaining the first emulsion, add 0.25ml dilute hydrochloric acid therein, obtain the first microcapsule mixed solution after reacting at normal temperature for 20min, wherein the average particle diameter of the microcapsules is less than 1 μ, add 7g water, 0.045g Sodium dodecylsulfonate, fully stirred to obtain the second emulsion, adding 0.02g of sodium hydroxide therein, and reacting at normal temperature for 10min to obtain the second microcapsule mixed solution, wherein the average particle diameter of the microcapsules is less than 1μ;

[0041] 2) Colloidal blend:

[0042] Mix the first microcapsule mixed solution w...

Embodiment 2

[0048] 1) Microencapsulation precursor:

[0049] 100g PbI 2 Add in 90g tetraethyl orthosilicate and mix, obtain the first oily phase, additionally 24gCH 3 NH 3 I add in 61g tetraethyl orthosilicate and mix, obtain the second oily phase, add 48g water, 0.18g hexadecyltrimethylammonium bromide and 0.18g dodecylsulfonic acid in the first oily phase Sodium, after fully stirring to obtain the first emulsion, add 0.4ml dilute hydrochloric acid to it, and react at room temperature for 30min to obtain the first microcapsule mixed solution, wherein the average particle size of the microcapsules is less than 1μ, add 31g to the second oil phase Water, 0.12g cetyltrimethylammonium bromide and 0.12g sodium dodecylsulfonate were fully stirred to obtain the second emulsion, 0.05g of sodium carbonate was added thereto, and the second emulsion was obtained after reacting at room temperature for 30min. Microcapsule mixture, wherein the average particle size of the microcapsules is less than ...

Embodiment 3

[0057] 1) Microencapsulation precursor:

[0058] 50gPbI 2 Add in 45g tetraethyl orthosilicate and mix, obtain the first oily phase, additionally 7gCH 3 NH 3 Add Cl to 45g tetraethyl orthosilicate and mix to obtain the second oil phase, add 15g water and 0.14g sodium dodecyl sulfonate to the first oil phase, stir well to obtain the first emulsion, add 0.3ml of dilute sulfuric acid, react at 30°C for 25min to obtain the first microcapsule mixture, wherein the average particle size of the microcapsules is less than 1μ, add 15g of water and 0.14g of sodium dodecylbenzenesulfonate to the second oil phase After fully stirring, the second emulsion is obtained, 0.03 g of sodium bicarbonate is added thereto, and the second microcapsule mixture is obtained after reacting at room temperature for 25 minutes, wherein the average particle diameter of the microcapsules is less than 1 μ;

[0059] 2) Colloidal blend:

[0060] Mix the first microcapsule mixed solution with the second microc...

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PUM

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Abstract

The invention discloses a preparation method of thin film materials of perovskite structures, belongs to the field of photovoltaic materials, and particularly belongs to the field of photovoltaic materials of the perovskite structures. The method includes: respectively preparing precursors, which can generate the perovskite structures through reaction, of photovoltaic materials into particles wrapped by microcapsules, co-mixing different precursor microcapsules to obtain coating liquid, coating to form a tightly-arranged coating layer with uniform thickness, removing the capsule shells through chemical treatment to allow the precursors to react with one another so as to obtain the photovoltaic materials of the perovskite structures when the photovoltaic properties of the photovoltaic materials need to be actually used. The photovoltaic materials can form a flat and uniform thin film on a carrier.

Description

technical field [0001] The invention relates to the field of photovoltaic materials, in particular to the field of photovoltaic materials with a perovskite structure. Background technique [0002] The preparation of perovskite materials is a key step to obtain high-efficiency perovskite solar cells. At the molecular scale, PbI 2 and CH 3 NH 3 I can react rapidly to generate CH through self-assembly 3 NH 3 PB 3 , so whether it is solid phase, liquid phase or gas phase, as long as the two raw materials are fully mixed, the desired perovskite material can be obtained under appropriate reaction conditions. However, for the light-absorbing layer of thin-film solar cells with a thickness of less than 1 μm, the large-grained perovskite crystals prepared by the solid-state reaction method are obviously not suitable. The earliest perovskite preparation method used in thin-film solar cells was liquid phase One-step method, but the spin-coating process used in the liquid-phase m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12
CPCC23C18/12
Inventor 陈庆曾军堂叶任海陈兵
Owner 东营市东凯新材料技术研发有限责任公司