Understanding and tuning blue-to-near-infrared photon cutting by the Tm3+/Yb3+ couple

Lanthanide-based photon-cutting phosphors absorb high-energy photons and ‘cut’ them into multiple smaller excitation quanta. These quanta are subsequently emitted, resulting in photon-conversion efficiencies exceeding unity. The photon-cutting process relies on energy transfer between optically acti...

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