多格位占据及其能量传递普遍存在于稀土发光材料的各个领域，且具有重要的科学及现实意义。Ce³⁺的4f?5d和Eu³⁺的4f?4f跃迁代表了稀土离子两种典型的电子跃迁类型。我们以Ce³⁺或Eu³⁺分别激活的E（δ）?Gd₂Si₂O₇（Pnma）、G?La₂Si₂O₇（P2₁/n）和F?Eu₂Si₂O₇（P1ˉ）为代表案例，讨论和思考稀土离子的多格位占据及其非辐射能量传递，重点阐述了晶体结构、样品相纯度、掺杂浓度、光谱测试、格位间能量传递和光谱分辨率等需关注的事项。在稀土离子激活的发光材料研究中，我们既需考量材料晶体结构与光谱的自洽，也要从光谱及发光衰减动力学对格位间能量传递（包括传出能量和接收能量）方面进行分析。希望这些内容在实验及表征上对刚涉足相关领域的读者有所启发。

The multi-site occupations and the energy transfers are ubiquitous in various fields of rare-earth ions activated luminescence materials and have important scientific and practical significance. The Ce³⁺ 4f-5d and the Eu³⁺ 4f-4f transitions represent two typical electronic transition types of rare-earth ions. We take Ce³⁺/Eu³⁺-activated E(δ)-Gd₂Si₂O₇(Pnma), G-La₂Si₂O₇(P2₁/n), and F-Eu₂Si₂O₇(P1ˉ) as the representative cases to discuss and revisit the multi-site occupations and the non-radiative energy transfers, focusing on the crystal structure, the phase purity of samples, the doping concentration, the spectral characterization, the energy transfer between lattice sites, and the spectral resolution. In the studies of luminescence materials activated by rare-earth ions, we must not only consider the self-consistency of the materials’ crystal structures and their spectra, but also analyze the energy transfers (including the outgoing energy and the receiving energy) between lattice sites from the spectra and the luminescence decay dynamics. We hope that these contributions could inspire experiments and characterization for readers who are new to the related fields.