Highly Luminescent Copper Iodide Cluster Based Inks with Photoluminescence Quantum Efficiency Exceeding 98%
- 11 February 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 142 (8), 3686-3690
- https://doi.org/10.1021/jacs.9b12908
Abstract
Highly luminescent inks are desirable for various applications such as decorative coating, art painting, and anticounterfeiting, to name a few. However, present inks display low photoluminescent efficiency requiring a strong excitation light to make them glow. Here, we report a highly luminescent ink based on the copper-iodide/1-Propyl-1,4-diazabicyclo[2.2.2]octan-1-ium (Cu4I6(pr-ted)2) hybrid cluster with a quantum efficiency exceeding 98%. Under the interaction between the Cu4I6(pr-ted)2 hybrid cluster and polyvinylpyrrolidone (PVP), the highly luminescent Cu4I6(pr-ted)2/PVP ink can be facilely prepared via the one-pot solution synthesis. The obtained ink exhibits strong green light emission that originates from the efficient phosphorescence of Cu4I6(pr-ted)2 nanocrystals. Attractively, the ink displays high conversion efficiency for the ultraviolet light to bright green light emission due to its wide Stokes shift, implying great potential for anticounterfeiting and luminescent solar concentrator coating.Keywords
Funding Information
- Ministry of Education of the People's Republic of China (WK2060190085)
- Ministry of Science and Technology of the People's Republic of China (2018YFA0306600)
- National Synchrotron Radiation Laboratory (KY2060000111)
- National Natural Science Foundation of China (11761131011, 21875236, 51571184, 81788101)
- Chinese Academy of Sciences (GJJSTD20170001, QYZDY-SSW-SLH004)
- Anhui Initiative in Quantum Information Technologies (AHY050000)
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