A kind of preparation method of one-dimensional perovskite micro-nanocrystal

A micro-nano and perovskite technology, applied in the preparation of organic compounds, nanotechnology, nano-optics, etc., can solve problems such as uncontrollable size and morphology, limiting material research and practical application, etc.

Inactive Publication Date: 2021-07-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size and shape of the material prepared by this method are uncontrollable, which limits further research and practical application of the material.

Method used

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  • A kind of preparation method of one-dimensional perovskite micro-nanocrystal
  • A kind of preparation method of one-dimensional perovskite micro-nanocrystal
  • A kind of preparation method of one-dimensional perovskite micro-nanocrystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 The amount of oleylamine injected was 0.03mL, the amount of oleic acid was 2.5mL, and the preparation (C 4 N 2 h 14 )PbBr 4 micro-nano block

[0032] Put 0.2mmol of lead oxide, 5mL of octadecene, 2.5mL of oleic acid and 0.03mL of oleylamine into a three-neck flask and with strong magnetic stirring, gradually raise the temperature to 130°C under the protection of nitrogen and keep it for 1h During this process, the color of the solution changed from a yellow turbid solution to a light yellow clear solution, and then the temperature was naturally lowered to 60°C, and 0.5 mmol of N,N'dimethylethylenediamine was injected, and the solution turned into a tea-yellow clear solution, and then added 0.8mmol (0.1mL) of bromotrimethylsilane, the solution rapidly turns into a white suspension, indicating that (C 4 N 2 h 14 )PbBr 4 micro-nanocrystal formation. Take it out after 2min and inject toluene to quench the reaction. Such as figure 1 Shown as (C 4 N 2 h ...

Embodiment 2

[0033] In Example 2, the amount of oleylamine injected was increased to 0.06mL, the amount of oleic acid was 2.5mL, prepared under the reaction at 80°C (C 4 N 2 h 14 )PbBr 4 micro-nano block

[0034] Put 0.2mmol of lead oxide, 5mL of octadecene, 2.5mL of oleic acid and 0.06mL of oleylamine into a three-neck flask and with strong magnetic stirring, gradually raise the temperature to 130°C under the protection of nitrogen and keep it for 1h During this process, the color of the solution changed from a yellow turbid solution to a light yellow clear solution, and then the temperature was naturally lowered to 80°C, and 0.5mmol of N,N'dimethylethylenediamine was injected, and the solution turned into a tea-yellow clear solution, and then added 0.8mmol (0.1mL) of bromotrimethylsilane, the solution rapidly turns into a white suspension, indicating that (C 4 N 2 h 14 )PbBr 4 micro-nanocrystal formation. Take it out after 2min and inject toluene to quench the reaction. Such as ...

Embodiment 3

[0035] Example 3 The amount of oleylamine injected was increased to 0.06mL, the amount of oleic acid was 2.5mL, and the reaction was prepared at 60°C (C 4 N 2 h 14 )PbBr 4 micro-nanorod

[0036] Put 0.2mmol of lead oxide, 5mL of octadecene, 2.5mL of oleic acid and 0.06mL of oleylamine into a three-neck flask and with strong magnetic stirring, gradually raise the temperature to 130°C under the protection of nitrogen and keep it for 1h During this process, the color of the solution changed from a yellow turbid solution to a light yellow clear solution, and then the temperature was naturally lowered to 60°C, and 0.5 mmol of N,N'dimethylethylenediamine was injected, and the solution turned into a tea-yellow clear solution, and then added 0.8mmol (0.1mL) of bromotrimethylsilane, the solution rapidly turns into a white suspension, indicating that (C 4 N 2 h 14 )PbBr 4 micro-nanocrystal formation. Take it out after 2min and inject toluene to quench the reaction. Such as Fi...

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Abstract

The preparation method of one-dimensional perovskite micro-nano crystal of the present invention belongs to the technical field of semiconductor nano-crystal synthesis method. Lead oxide, stearyl, oleic acid and oleylamine are mixed and stirred, and the temperature is raised to 130°C under the protection of nitrogen. Keep it for 1 hour to obtain a light yellow clear solution, then naturally cool down to 40-80°C, inject N,N'dimethylethylenediamine, and stir for 10 minutes, the solution turns brown, then inject trimethylbromosilane, The solution turns into a white turbid liquid, and one-dimensional perovskite (C 4 N 2 h 14 )PbBr 4 micro-nano crystals. The perovskite nanocrystal synthesized by the invention has high stability as a lighting material and emits light from a single material, and the invention has the advantages of controllable product shape, uniform size, simple production process, and low cost.

Description

technical field [0001] The invention belongs to the technical field of synthesis methods of semiconductor nanocrystals, and in particular relates to a method for preparing high-purity micro-nanocrystals and research on morphology control. Background technique [0002] Solid white light materials have been a hot topic in scientific research for a long time. Usually, people produce white light by mixing fluorescent substances or light-emitting diodes of different wavelength bands. However, due to the different stability of each component, the color of the produced white light may change after a period of time, greatly reducing the quality of white light. . In recent years, white light perovskite materials have become the most influential topic in the field of scientific research. Due to their high stability, a single component emits light and the radiation spans the entire visible light band, which can produce high-quality white light. Lighting has attracted widespread atten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/10C07C209/74C09K11/06B82Y20/00B82Y40/00
Inventor 肖冠军马志伟邹勃
Owner JILIN UNIV
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