Near-infrared luminescence and high thermal stability of Rb₂NaScF₆:Cr³⁺ phosphor for spectroscopy applications

Abstract

A comprehensive investigation of a chromium-doped near-infrared fluoride phosphor with desired anti-thermal quenching behavior.

Key Role of Metal-to-Metal Charge Transfer Transition between Mo6+ and Bi3+ for Enhancement in NIR Luminescence of Gd2MoO6:Bi,Yb Nanophosphor

“…In general, inorganic phosphors comprise luminescence centers and host materials. As NIR luminescence centers, many researchers chose Eu 2+ and Ce 3+ of lanthanide ions or Cr 3+ and Ni 2+ of transition metal ions; − however, their transition types (Eu 2+ , Ce 3+ : 4f–5d; and Cr 3+ , Ni 2+ : 3d–3d transitions) significantly affect their coordination environment. Consequently, an appropriate host matrix for them should be selected to show the NIR luminescence, which extremely limits the ranges of the host matrix selection.…”