Preparation process and LED application of copper nanoclusters fluorescent nanoflowers with high quantum yield

US12021165B2 · kind B2 · utility

Assignee

• SHANDONG UNIVERSITY · CN

Inventors

• Xia Xin · Jinan, CN
• Shujin Zhou · Jinan, CN
• Di SUN · Beijing, CN
• Shanshan Zhang · Houston, US
• Ning Feng · Arcadia, US

Key dates

• Filing date: Nov 24, 2021
• Grant date: Jun 25, 2024
• Expiry date: Aug 30, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8514

Abstract

A preparation process and LED application of copper nanoclusters (Cu NCs) fluorescent nanoflowers with high quantum yield by dissolving Cu4I4 into dimethyl sulfoxide (DMSO) and then adding glycerol, it self-assembles into Cu NCs s fluorescent nanoflowers. The Cu4I4 fluorescent nanoflowers prepared by the invention have outstanding optical properties, a quantum yield up to 64.5%, and can be made into a series of different luminous colors and excellent stability LED only with commercial blue phosphor, such as yellow-green, sky blue, white, wherein according to the mass ratio of 4:5 ratio mix can be prepared white light emission LED. Fluorescent Cu NCs can successfully replace traditional light conversion materials and prepare environmentally friendly LEDs.