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

被引：15

作者：

Chang, Chih-Yu ^{[1
]}

Huang, Ming-Hsuan ^{[1
]}

Chen, Kuan-Chun ^{[1
]}

Huang, Wen-Tse ^{[1
]}

Kaminski, Mikolaj ^{[2
]}

Majewska, Natalia ^{[2
]}

Klimczuk, Tomasz ^{[3
]}

Chen, Jia-Hao ^{[4
]}

Cherng, Ding-Hua ^{[4
]}

Lu, Kuang-Mao ^{[4
]}

Pang, Wei Kong ^{[5
]}

Peterson, Vanessa K. ^{[5
,6
]}

Mahlik, Sebastian ^{[2
]}

Leniec, Grzegorz

Liu, Ru-Shi ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Univ Gdansk, Inst Expt Phys, Fac Math Phys & Informat, PL-80308 Gdansk, Poland

[3] Gdansk Univ Technol, Fac Appl Phys & Math & Adv Mat Ctr, PL-80233 Gdansk, Poland

[4] Everlight Elect Co Ltd, New Taipei 238, Taiwan

[5] Univ Wollongong, Inst Superconducting & Elect Mat, North Wollongong, NSW 2500, Australia

[6] Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Sydney, NSW, Australia

来源：

CHEMISTRY OF MATERIALS | 2024年 / 36卷 / 08期

关键词：

Electron spin resonance spectroscopy - Infrared devices - Light emission - Light sources - Paramagnetic resonance - Phosphors - Quantum efficiency - Sintering;

D O I：

10.1021/acs.chemmater.4c00438

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 NIR-II 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+.

引用

页码：3941 / 3948

页数：8

共 42 条

[1] NIR-II Responsive Inorganic 2D Nanomaterials for Cancer Photothermal Therapy: Recent Advances and Future Challenges [J].