Wang Chengqian, Niu Yaping, Wang Yun, Wu Fugen, Zhang Qi, Teng Yun, Dong Huafeng, Mu Zhongfei
School of Materials and Energy, Guangdong University of Technology, Waihuan Xi Road, No.100, Guangzhou 510006, People's Republic of China.
The College of Information Engineering, Guangzhou Vocational University of Science and Technology, Guangcong Nine Road, Guangzhou 510550, China.
Inorg Chem. 2024 Aug 5;63(31):14383-14391. doi: 10.1021/acs.inorgchem.4c01011. Epub 2024 Jul 24.
Currently, near-infrared (NIR) light-emitting materials have been widely used in many fields, such as night vision, bioimaging, and nondestructive analysis. However, it is difficult to achieve multifunction in certain NIR light emitting phosphor. Herein, we propose a new near-infrared phosphor MgGaGeO:Cr,Ni that can be applied to at least three fields, i.e., identification of compounds, temperature sensing, anticounterfeiting, and other applications. The multifunctional material exhibited efficient broadband emission of 650-1650 nm under 420 nm excitation. The emission intensity of Ni in MgGaGeO:Cr,Ni is enhanced by two times compared with that of Ni in MgGaGeO:Ni due to the energy transfer process. Compared with phosphor single doped with Ni, MgGaGeO:Cr,Ni is more convincing in organic compound recognition because it is based on two emission bands: 600-1100 nm and 1100-1650 nm. As a temperature sensor, MgGaGeO:Cr,Ni is an ideal temperature-sensing material. This work not only provides a super broadband NIR emitting phosphor with multiple functions but also presents a practical approach for the development of high-efficiency and multifunctional NIR phosphors.
