Constructing Broadband Near‐Infrared Garnet Emitters CaGd 2 Ga 4 SiO 12 :Cr 3+ with Unity Quantum Efficiency and High Thermal Stability for Versatile Applications
Guangdong University of Technology · Key Laboratory of Guangdong Province · +1 more institution
Abstract
Abstract The pursuit of broadband near‐infrared (NIR) phosphors for next‐generation smart NIR light sources has garnered extensive interest. However, developing phosphors efficiently excitable by blue light to produce thermally stable and highly efficient broadband NIR emission surpassing 830 nm remains a formidable challenge. Herein, a novel CaGd 2 Ga 4 SiO 12 garnet is reported, designed through a structure reconstruction approach to host Cr 3+ ions for developing a high‐performance broadband NIR phosphor. By strategically introducing Jahn–Teller distortion at the octahedral sites via chemical pressure, Cr 3+ is endowed with a super‐broadband NIR emission spanning 600–1300 nm centered at 837 nm. The…
Citation impact
- FWCI
- 23.32
- Percentile
- 100%
- References
- 79
Authors
5Topics & keywords
- Materials science
- Phosphor
- Optoelectronics
- Quantum efficiency
- Full width at half maximum
- Thermal stability
- Luminescence
- Light-emitting diode
- Affordable and clean energy