Researchers develop novel near-ultraviolet LED-excitable near-infrared emitters

https://phys.org/news/2022-06-near-ultraviolet-led-excitable-near-infrared-emitters.html

"Te4+/Ln3+ (Ln=Er, Nd, and Yb) co-doping... NIR emission perovskite-derivative Cs2ZrCl6 microcrystals (MCs)... sensitization spin-orbital allowed 1S0 → 3P1 transition Te4+... intense and multi-wavelength NIR luminescence... 4f → 4f transitions Er3+, Nd3+, and Yb3+... air-, structure-, and photo-stability of Te4+/Ln3+ co-doped Cs2ZrCl6... potentials as vis/NIR dual-emitters... NUV-converted NIR-LEDs... efficient NIR emission lead-free metal halides ns2-metal and lanthanide ion co-doping"

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