Green and environment-friendly synthesis method of CsPbX3 perovskite quantum dot

A kind of green environmental protection, synthetic method technology, applied in chemical instruments and methods, lead compounds, inorganic chemistry, etc., can solve the problems of environmental pollution, inability to recycle, no effective use of raw materials, etc., to achieve excellent optical performance, maximum utilization rate the effect of

Active Publication Date: 2017-05-31
宁波智正伟盈信息科技有限公司
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the traditional octadecene or paraffin system, CsPbX 3 Quantum dot synthesis, or a new type of room temperature perovskite CsPbX 3 The u...

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
  • Green and environment-friendly synthesis method of CsPbX3 perovskite quantum dot
  • Green and environment-friendly synthesis method of CsPbX3 perovskite quantum dot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of CsPbBr 3 Perovskite Quantum Dots

[0020] 1. Mix 0.2mmol of CsBr and 0.2mmol of PbBr 2 Put it into the flask, add 5ml of N,N-dimethylformamide (DMF) as a solvent, 0.5ml of oleic acid and 0.25ml of oleylamine as a stabilizer, stir to dissolve to form a clear solution.

[0021] 2. Place the clarified solution in a low-pressure distillation device for distillation separation, DMF distillation separation and recovery, cesium, lead, and bromide ions are supersaturated and precipitated due to the evaporation of DMF, forming CsPbBr 3 Perovskite quantum dots.

Embodiment 2

[0023] Preparation of CsPbBr 1 I 2 quantum dot

[0024] 1. Mix 0.2mmol of CsBr and 0.2mmol of PbI 2 Put it into the flask, then add 5ml of dimethyl sulfoxide (DMSO) as a solvent, 0.5ml of oleic acid and 0.25ml of oleylamine as a stabilizer, and stir to dissolve it to form a clear solution.

[0025] 2. Put the clarified solution in a low-pressure distillation device for distillation separation, DMSO distillation separation and recovery, cesium, lead, and bromide ions are supersaturated and precipitated due to the evaporation of DMSO, forming CsPbBr 1 I 2 Perovskite quantum dots.

Embodiment 3

[0027] Preparation of CsPbI 3 Perovskite Quantum Dots

[0028] 1. Mix 0.2mmol of CsI and 0.2mmol of PbI 2 Put it into the flask, add 5ml of N,N-dimethylformamide (DMF) as a solvent, 0.5ml of oleic acid and 0.25ml of oleylamine as a stabilizer, stir to dissolve to form a clear solution.

[0029] 2. Place the clarified solution in a low-pressure distillation device for distillation separation, DMF distillation separation and recovery, cesium, lead, and bromide ions are supersaturated and precipitated due to the evaporation of DMF, forming CsPbI 3 Perovskite quantum dots.

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

No PUM Login to view more

Abstract

The invention discloses a simple, green, and environment-friendly synthesis method of a CsPbX3 perovskite quantum dot, wherein the X can be Cl, Br, or I. The synthesis method is characterized in that cesium ions, lead ions, and bromine ions are dissolved in a solvent, a proper amount of carboxylic acids and amines is added and taken as the stabilizing agent; a low pressure distillation method is adopted to separate the solvent from the cesium ions, lead ions, and bromine ions; cesium ions, lead ions, and bromine ions are precipitated out due to the evaporation of the solvent, and CsPbX3 perovskite quantum dots are formed. The synthesis method has the advantages that the solvent can be repeatedly used through a low pressure distillation technology, the cost is saved, the method is green and environment-friendly, the reaction temperature is low, the operation is simple, and the synthesis method is suitable for large scale massive production.

Description

technical field [0001] The invention relates to the technical field of nanomaterials for photoelectric display lighting, in particular to a perovskite CsPbX 3 Synthesis of quantum dots. Background technique [0002] Green chemistry refers to the effective use of raw materials in the manufacture and application of chemical products, the reduction or elimination of waste, and the avoidance of environmental burdens due to the discharge of harmful substances. [0003] CaB 3 Perovskite quantum dots, as a new type of semiconductor nano-nano material, consist of an inorganic core composed of hundreds to thousands of atoms, covered with organic ligands, and the particle size is usually 2-15nm. Since quantum dots can controllably adjust their emission spectrum by adjusting the size, the spectral emission of the entire visible light region can be obtained by changing the size and chemical composition of quantum dots. Show great potential and application value. However, regardless ...

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): C01G21/00C09K11/66
CPCC01G21/006C01P2002/80C09K11/665
Inventor 曹万强方凡刘培朝张慧婕李阳梅明王仁龙曾媛媛
Owner 宁波智正伟盈信息科技有限公司
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