Creating a blue-light-excitable, ultra-broadband and relatively long-wavelength near-infrared emission in Cr3+-activated garnet by controlling cationic disorder

Na x Ca 3−2 x Gd x In 2 Ge 3 O 12 :Cr 3+ (0 ≤ x ≤ 1.5) solid-solution materials were created by introducing cationic disorder, which exhibit a wide-range spectral tunability and an ultra-broadband spectral coverage, and simultaneously remain blue-light excitable.