Broadband sensitization is an effective strategy to enhance the upconversion luminescence (UCL) of lanthanide ions. Herein, novel UC materials LiScSi₂O₆:Cr³⁺/Er³⁺ (LSS:Cr³⁺/Er³⁺) were synthesized by high-temperature solid state reaction and their luminescent properties were investigated. LSS:Cr³⁺/Er³⁺ has the broadband absorption in the spectral range of 600–800 nm, and meanwhile shows green UC emissions of Er³⁺ upon pumping Cr³⁺ by the 690 nm laser. The UCL of LSS:Cr³⁺/Er³⁺ belongs to the two-photon process and is attributed to the energy transfer upconversion mechanism. The effects of the Cr³⁺ and Er³⁺ concentration as well as the Yb³⁺ introduction were also studied. LSS:Cr³⁺/Yb³⁺/Er³⁺ exhibits the interesting dual-mode UCL, capable of generating the UCL of Cr³⁺ upon pumping Yb³⁺ ions and the UCL of Er³⁺ upon pumping Cr³⁺ ions. This research might promote the development of novel broadband Cr³⁺-sensitized UC materials.

宽带敏化是增强镧系离子上转换发光（UCL）的有效策略。在此，通过高温固相反应合成了新型UC材料LiScSi ₂ O ₆ :Cr ³⁺ /Er ³⁺ (LSS:Cr ³⁺ /Er ³⁺ )，并研究了其发光性能。LSS:Cr ³⁺ /Er ³⁺在600-800 nm 的光谱范围内具有宽带吸收，同时在690 nm 激光泵浦Cr ³⁺时显示出Er ^{3+ 的}绿色UC 发射。LSS的UCL：Cr ³⁺ /Er ³⁺属于双光子过程，归因于能量转移上转换机制。还研究了Cr ³⁺和Er ³⁺浓度以及Yb ³⁺引入的影响。LSS:Cr ³⁺ /Yb ³⁺ /Er ³⁺表现出有趣的双模式UCL，能够在泵送Yb ³⁺离子时产生Cr ³⁺的UCL，并且在泵送Cr ³⁺离子时产生Er ³⁺的UCL 。该研究可能会促进新型宽带Cr ³⁺敏化UC材料的开发。