Arabian Journal of Chemistry · 2024 · 10 citations · 40 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsOptoelectronicsPhotonicsInfrared SpectroscopyLuminescent MaterialsNear-infrared SpectroscopyOptical SpectroscopyOptoelectronic MaterialsRare-earth-doped MaterialsInfrared Light-emitting DiodesInorganic PhosphorsNear-infrared EmissionOptical PropertiesPerovskite Luminescent MaterialsPhosphor MaterialsPhosphorsThermal Stability
The recent years have witnessed a great leap for near-infrared (NIR) spectroscopy technology in multifunctional application fields. In this study, a double-perovskite structured Cr3+-doped Cs2KScF6 fluoride NIR phosphor with peak location at 778 nm and full-width at half maximum (FWHM) of 95 nm was synthesized by a co-precipitation method. The integral emission intensity at 423 K retains 70 % of that at room temperature (RT), showing good luminescent thermal stability. Combining the obtained phosphor in an NIR phosphor converted light-emitting diode (NIR pc-LED) device, the output power and photoelectric conversion efficiency can reach 72.28 mW and 6.83 % at 320 mA. By virtue of the good optical performance, clear structural images of different fruits were visualized by using the NIR pc-LED as light source, suggesting the potential of Cs2KScF6:Cr3+ phosphor to be used in high-power LED devices.
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Dongjie� Liu, Guogang Li, Peipei Dang et al. · Angewandte Chemie International Edition · 2021 · 318 citations
Natural Sciences, Materials Engineering, Materials Science +17