Novel ultrabright luminescent copper nanoclusters and application in light-emitting devices

• Published in: Chemical communications (Cambridge, England) Vol. 57; no. 77; pp. 989 - 9893
• Main Authors: Huang, Qiu-Qin, Hu, Mei-Yue, Li, Yan-Li, Chen, Nan-Nan, Li, Yi, Wei, Qiao-Hua, Fu, FengFu
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 28.09.2021
• Subjects: Copper; Light emitting diodes; Nanoclusters; Phosphorescence; Phosphors; Room temperature; White light
• ISSN: 1359-7345; 1364-548X
• DOI: 10.1039/d1cc03799d

Two newly synthesized ultra-small copper nanoclusters, [Cu 3 (μ 3 -H)(μ 2 -dppy) 4 ](ClO 4 ) 2 (1) and [Cu 4 (μ 4 -H)(μ 2 -dppy) 4 (μ 2 -Cl) 2 ](ClO 4 ) (2) (dppy = diphenyl-2-pyridylphosphine), have been shown to exhibit ultrabright yellow and yellow-green room-temperature phosphorescence (RTP) emission, with high quantum yields of 71.8% and 63.5%, respectively. Therefore, nanocluster 1 has been applied for the first time as a single component phosphor for yellow and white light-emitting diodes (LEDs) with favourable characteristics. Ultra-small tri/tetra-nuclear copper nanoclusters ( Cu 3 /Cu 4 ) exhibit ultrabright phosphorescence emission ( Ф em = 71.8 and 63.5%). Cu 3 is firstly applied as a single component phosphor for white light-emitting diodes with favourable characteristics.