US 12,021,165 B2
Preparation process and LED application of copper nanoclusters fluorescent nanoflowers with high quantum yield
Xia Xin, Jinan (CN); Shujin Zhou, Jinan (CN); Di Sun, Jinan (CN); Shanshan Zhang, Jinan (CN); and Ning Feng, Jinan (CN)
Assigned to SHAN DONG UNIVERSITY, Jinan (CN)
Filed by SHANDONG UNIVERSITY, Jinan (CN)
Filed on Nov. 24, 2021, as Appl. No. 17/456,558.
Prior Publication US 2022/0293814 A1, Sep. 15, 2022
Int. Cl. H01L 33/00 (2010.01); H01L 33/06 (2010.01); H01L 33/50 (2010.01)
CPC H01L 33/005 (2013.01) [H01L 33/06 (2013.01); H01L 33/502 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A process for preparing LED comprising the following steps: Cu NCs fluorescent nanoflowers are grounded evenly, and mixed with phosphor of different colors, then deposited on a LED chip by gluing and curing that yields various light-emitting color LEDs; wherein the Cu NCs fluorescent nanoflowers comprise flakes with a chemical composition of Cu4I4, which is quad-core Cu NCs with Cu as nucleus and triphenylphosphine as a ligand; each of the Cu NCs fluorescent nanoflowers has a diameter of 30-50 μm, each of the flakes has a length of 15-20 μm and a width of 5-8 μm.