Luminescence thermal stability and photoelectric properties of NIR pc-LED (IMAGE)
Caption
a, Temperature-dependent luminescence 3D color mapping of LaMgGa₁₁O₁₉:0.7Cr³⁺ sample. b, Luminescence intensities versus temperature monitoring at 760, 890, and 1200 nm. c, Scatters of peak positions versus temperature. It was observed with anomalous anti-thermal quenching behavior (432% @ 290 K). d, Comparison of IQE, EQE, and Abs values with some reported NIR-Ⅱ luminescent phosphors. The luminescence IQE and EQE are 27.2% and 18.9%. e, Electroluminescence spectra and photographs of the fabricated NIR pc-LED device by integrating LaMgGa₁₁O₁₉:0.7Cr³⁺ on a commercial 450 nm blue LED. f NIR output power and photoelectric conversion efficiency of the fabricated pc-LED with the tunable driven current.
Credit
by Shengqiang Liu, Jingxuan Du, Zhen Song, Chonggeng Ma, Quanlin Liu
Usage Restrictions
Credit must be given to the creator.
License
CC BY