Broadband Near-Infrared Luminescence in Garnet Y3Ga3MgSiO12: Cr3+ Phosphors

Lipeng Jiang; Xue Jiang; Liangliang Zhang; Quansheng Liu; Xiaoyun Mi; Zhan Yu; Guocai Lv; Yanjing Su

doi:10.1021/acs.inorgchem.2c04319

Broadband Near-Infrared Luminescence in Garnet Y₃Ga₃MgSiO₁₂: Cr³⁺ Phosphors

Inorg Chem. 2023 Mar 13;62(10):4220-4226. doi: 10.1021/acs.inorgchem.2c04319. Epub 2023 Mar 1.

Authors

Lipeng Jiang¹, Xue Jiang¹, Liangliang Zhang², Quansheng Liu³, Xiaoyun Mi³, Zhan Yu⁴, Guocai Lv⁵, Yanjing Su¹

Affiliations

¹ Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China.
² State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033, China.
³ School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China.
⁴ Zhongguancun Key Laboratory of Solid-State Lighting, Beijing 100083, China.
⁵ Basic Experimental Center of Natural Science, University of Science and Technology Beijing, Beijing 100083, China.

PMID: 36857406
DOI: 10.1021/acs.inorgchem.2c04319

Abstract

Broadband near-infrared (NIR) phosphors are the critical component of phosphor converted NIR light-emitting diode (LED) light sources. However, there are still a lack of NIR phosphors with excellent external quantum efficiency (EQE) and thermal stability. Here, we report a highly efficient broadband NIR phosphor Y₃Ga₃MgSiO₁₂: Cr³⁺. The optimized phosphor yields an internal quantum efficiency (IQE) and an EQE of 79.9 and 33.7%, respectively. The integrated emission intensity still remains at 84.4% of that at room temperature when heated to 423 K. A broadband NIR LED lamp was made by combining as-prepared phosphor and a blue InGaN LED chip, which shows an output power of 89.8 mW with a photoelectric conversion efficiency of 17.1% driven at 525 mW input power. Our research provides a promising NIR phosphor with high efficiency broadband for the NIR light source.