Preparation method of solid carbon dot fluorescent powder with high quantum yield and application of solid carbon dot fluorescent powder in LED (Light Emitting Diode) lamp bead

Abstract

The invention relates to a preparation method of solid carbon dot fluorescent powder with high quantum yield. The preparation method comprises the following steps: weighing raw materials according tothe following constituents in parts by weight: 0.25 to 1 part of potassium hydrogen phthalate, 0.5 part of sodium azide and 0.25 to 1 part of boric acid; mixing the raw materials, then dissolving themixture in a formaldehyde solution ultrasonically, putting the mixed solution in a microwave oven for heating at the power of 225 to 750 W for 4 to 10 min, and completely evaporating the liquid at theend of reaction to obtain white powder which is nitrogen and boron-doped carbon dots (NBCDs). The preparation method is low in cost, high in preparation speed and easy to operate; the quantum yield (QY) of the prepared solid luminous NBCSs is extremely high, and the absolute solid luminous QY of the NBCSs is 67.7 percent.

Description

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AI Technical Summary

Benefits of technology

The present invention provides an easy way for making nerve cells that are less expensive than existing methods but still fast enough to make them work properly.

Problems solved by technology

This technical problem addressed in this patented text relates to improving the efficiency and effectiveness of producing stable greenhouse gas emitted (GHg) semiconductor devices called COLED' slices through chemical vapor deposition techniques like vacuum evaporation, atomic layer epichloroarsthonium reduction, nitrogen lithography, electrospray ionization, spontaneously excited tripled harmony oscillators, laser irradiation, and other processes requiring precise manipulation over large areas. Additionally, current methods involve complex procedures including extraction after dissolution into organics suitable carriers due to poor reproducibility issues during production.

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