Characterisation of Sm²⁺-doped CsYbBr₃, CsYbI₃ and YbCl₂ for near-infrared scintillator application

Fast energy transfer from Yb²⁺ to Sm²⁺ is a requirement when using Yb²⁺ as a sensitiser for Sm²⁺ emission for near-infrared scintillator applications. This cannot be achieved through dipole-dipole interactions due to the spin-forbidden nature of the involved Yb²⁺ transition, making the...