Single crystal of CdF₂ codoped with the couple Ho³⁺/Yb³⁺ with good optical quality were grown by a Bridgman technique after purification of the starting materials. Emission spectra are recorded at room temperature under UV and NIR excitation. The kinetics of the green and red emissions arising from both (⁵F₄, ⁵S₂) and ⁵F₅ excited states of Ho³⁺ ions are analyzed in the frame of Ho³⁺→Ho³⁺ and Yb³⁺↔Ho³⁺ energy transfers. The luminescence decays are parametrized using Inokuti-Hirayama model considering dipole-dipole interaction, in the case of UV excitation and also NIR excitation for the green emission, leading to a R₀ critical transfer distance of 9–11 Å. The kinetics of the ⁵F₅→⁵I₈ red upconverted emission is analyzed and discussed using a rate equation model.

在起始材料纯化后，通过布里奇曼技术生长具有良好光学质量的与Ho ³⁺ /Yb ³⁺对共掺杂的CdF ₂单晶。发射光谱是在室温下在 UV 和 NIR 激发下记录的。在 Ho ³⁺ →Ho ³⁺和 Yb ³⁺ ↔Ho的框架内分析了由 Ho ³⁺离子的( ⁵ F ₄ , ⁵ S ₂ ) 和⁵ F ₅激发态产生的绿色和红色发射动力学³⁺能量转移。在紫外激发和绿色发射的 NIR 激发的情况下，使用 Inokuti-Hirayama 模型考虑偶极-偶极相互作用对发光衰减进行参数化，导致 R ₀临界传输距离为 9-11 Å。使用速率方程模型分析和讨论了⁵ F ₅ → ⁵ I ₈红色上转换发射的动力学。