Continuous automated synthesis method of highly controllable quantum dots

Abstract

The invention discloses a continuous automated synthesis method of highly controllable quantum dots. The continuous automated synthesis method comprises: a perovskite quantum dot synthesis method: weighing 0.6 g of cesium carbonate CsCO3, 2.2 mL of oleic acid and 15 mL of 1-octadecene, carrying out mixing stirring heating until cesium carbonate completely reacts, weighing 2.5 mL of 1-octadecene, 0.18 mmol lead halide, 0.27 mL of oleylamine and 0.27 mL of oleic acid, heating to a temperature of 120 DEG C until the lead halide is completely dissolved, slowly injecting into a microfluidic reactorthrough a peristaltic pump and other devices according to a certain ratio within the same time, controlling the temperature and the temperature of a micro-reaction chamber, opening an external lightfield, and collecting the obtained perovskite quantum dot product; and a carbon quantum dot synthesis method: dissolving 1.46 g of lysine in 100 mL of distilled water, dissolving 1.76 g of ascorbic acid in 100 mL of distilled water, slowly injecting into a microfluidic reactor, heating to a temperature of 140 DEG C, opening an external field, and collecting the carbon quantum dot product solution,wherein the adjustability of the reaction time is ensured through the optimized pipeline design.

Description

technical field [0001] The invention relates to the technical field of automatic synthesis of highly controllable quantum dots, in particular to a continuous automatic synthesis method of highly controllable quantum dots. Background technique [0002] Quantum dots, also known as nanocrystals, are generally semiconductor nanoparticles composed of II-VI or III-V elements. However, with the advancement of technology, the elements that make up quantum dots are becoming more and more diverse, and the systems are also richer, such as three-element or even multi-element multi-element systems. The particle size of quantum dots is generally between 1 and 10nm, resulting in a continuous energy band structure becoming a molecular characteristic, adjustable discrete energy level structure. The charges (electrons and holes) formed by light excitation are limited by the size of quantum dots (quantum confinement effect), and after recombination, high-efficiency and pure chromaticity fluor...

AI Technical Summary

Problems solved by technology

[0005] The current synthesis process of wet preparation of quantum dots on the market is mainly produced by the hot injection method, and there are great differences in the size and composition of the products between different batches, which leads to the stability and repeatability of the luminescence performance. Poor performance, which seriously hinders the application of the market

Moreover, mass production is not easy to carry out