Ultrahigh Quantum Efficiency Near-Infrared-II Emission Achieved by Cr3+ Clusters to Ni2+ Energy Transfer - Publication - Bridge of Knowledge

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Ultrahigh Quantum Efficiency Near-Infrared-II Emission Achieved by Cr3+ Clusters to Ni2+ Energy Transfer

Abstract

Increasing demand for near-infrared-II (NIR-II) light sources requires improved NIR-II phosphors. We present a series of phosphors codoped with Cr3+ and Ni2+ that possess NIRII emission with an unprecedented internal quantum efficiency (IQE) of 97.4%. Our study reveals an energy transfer mechanism involving clusters of Cr3+ where luminescent centers are closely matched in energy and where the Ni2+ emission intensity can be tuned through sintering temperature. The profound electron paramagnetic resonance (EPR) studies disclose the interaction between Cr3+ clusters and Cr3+−Ni2+ pairs, further proving the cause of such a high IQE and the significance of Cr3+ clusters. This work provides promising pathways for the development of NIR-II light-emitting diodes with outstanding efficiency by suggesting a new energy transfer source of Cr3+.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
CHEMISTRY OF MATERIALS no. 36, pages 3941 - 3948,
ISSN: 0897-4756
Language:
English
Publication year:
2024
Bibliographic description:
Chang C., Huang M., Chen K., Huang W., Kamiński M., Majewska N., Klimczuk T., Chen J., Cherng D., Lu K., Pang W. K., Peterson V. K., Mahlik S., Leniec G., Liu R.: Ultrahigh Quantum Efficiency Near-Infrared-II Emission Achieved by Cr3+ Clusters to Ni2+ Energy Transfer// CHEMISTRY OF MATERIALS -Vol. 36,iss. 8 (2024), s.3941-3948
DOI:
Digital Object Identifier (open in new tab) 10.1021/acs.chemmater.4c00438
Sources of funding:
  • Free publication
Verified by:
Gdańsk University of Technology

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