Samples of the Ca₃Sc₂Si₃O₁₂ (CSS) host singly doped with Eu²⁺ or Yb³⁺, doubly doped with Eu²⁺ and Yb³⁺, and triply doped with Ce³⁺, Eu²⁺ and Yb³⁺ were synthesized by a sol–gel combustion process under reducing conditions. Unlike previous reports of Eu²⁺Yb³⁺ energy transfer in other systems, the energy transfer is resonant in the CSS host and the transfer efficiency reaches 100 % for lightly doped samples. The transfer mechanism is multipolar rather than electron transfer for the sample compositions employed herein. The emission intensity of Yb³⁺ is further enhanced by co-doping with Ce³⁺ in addition to Eu²⁺. The quantum efficiencies of the doped materials range between 9 % and 93 %.

中文翻译：

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（II）和Y（III）阳离子之间独特的光谱重叠和共振能量转移：无量子切割

Ca ₃ Sc ₂ Si ₃ O ₁₂（CSS）主体样品分别掺杂有Eu ²⁺或Yb ³⁺，双重掺杂Eu ²⁺和Yb ³⁺以及三次掺杂Ce ³⁺，Eu ²⁺和Yb在还原条件下，通过溶胶-凝胶燃烧过程合成了³⁺。不同于先前的Eu ²⁺ Yb ³⁺报告在其他系统中进行能量传输时，CSS主机中的能量传输是共振的，对于轻度掺杂的样品，传输效率达到100％。对于本文采用的样品组合物，转移机理是多极转移而不是电子转移。除了Eu ²⁺之外，还通过与Ce ³⁺共掺杂进一步提高了Yb ³⁺的发射强度。掺杂材料的量子效率在9％到93％之间。