@article{Ma2024, 
author = {Yuelong Ma and Xingcan Li and Lan Wu and Chenyang Shao and Boqiang Zhang and Tao Pang and Lili Lu and Hui Qiu and Ye Tian and Guilu Wang and Yanbo Hui and Qianwen Guo and Daqin Chen},
title = {Preparation of (Lu,Y)3(Al,Sc,Cr)2Al3O12 phosphor ceramics with high thermal stability for near-infrared LED/LD},
year = {2024},
journal = {Journal of Advanced Ceramics},
volume = {13},
number = {3},
pages = {354-363},
keywords = {thermal stability, electron phonon coupling effect, photoelectric efficiency, near-infrared phosphor ceramics (NIR-PCs), NIR light-emitting diode/laser diode (LED/LD) prototype},
url = {https://www.sciopen.com/article/10.26599/JAC.2024.9220860},
doi = {10.26599/JAC.2024.9220860},
abstract = {Near-infrared (NIR) phosphor-converted light-emitting diodes/laser diodes (LEDs/LDs) are prospective lighting sources for NIR spectroscopy. However, developing NIR phosphor materials with desired thermal robustness and high photoelectric efficiency is a crucial challenge for their applications. In this work, based on the cationic radius matching effect, a series of (Lu,Y)3(Al,Sc,Cr)2Al3O12 NIR phosphor ceramics (LuYScCr NIR-PCs) were fabricated by vacuum sintering. Excellent thermal stability (95%@150 ℃) was obtained in the prepared NIR-PCs, owing to their weak electron–phonon coupling effect (small Huang–Rhys factor). Being excited at 460 nm, NIR-PCs realized a broadband emission (650–850 nm) with internal quantum efficiency (IQE) of 60.68%. Combining NIR-PCs with LED/LD chips, the maximum output power of the encapsulated LED prototype was 447 mW@300 mA with photoelectric efficiency of as high as 18.6 %@180 mA, and the maximum output power of the LD prototype was 814 mW@2.5 A. The working temperatures of NIR-PCs were 70.8 ℃@300 mA (LED) and 102.8 ℃@3 A (LD). Finally, the prepared NIR-PCs applied in food detection were verified in this study, demonstrating their anticipated application prospects in the future.}
}