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

Two newly synthesized ultra-small copper nanoclusters, [Cu-3(mu(3)-H) (mu(2)-dppy)(4)](ClO4)(2) (1) and [Cu-4(mu(4)-H)(mu(2)-dppy)(4)(mu(2)-Cl)(2)](ClO4) (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.

Automated summary

Two newly synthesized ultra-small copper nanoclusters exhibit ultrabright yellow and yellow-green room-temperature phosphorescence, and have been used for LEDs with favorable characteristics.