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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Spectral Properties and Energy Transfer between Ce3+ and Yb3+ in the Ca3Sc2Si3O12 Host: Is It an Electron Transfer Mechanism?
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Spectral Properties and Energy Transfer between Ce3+ and Yb3+ in the Ca3Sc2Si3O12 Host: Is It an Electron Transfer Mechanism?

机译：Ca3Sc2Si3O12主体中Ce3 +和Yb3 +之间的光谱性质和能量转移：这是电子转移机制吗？

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摘要

The downshifting from Ce3+ blue emission to Yb3+ near-infrared emission has been studied in the garnet host Ca2.8-2xCe0.1YbxNa0.1+xSc2Si3O12 (x = 0-0.36). The downshifting does not involve quantum cutting, but one incident blue photon is transferred from Ce3+ to Yb3+ with an energy transfer efficiency up to 90% when x = 0.36 for the Yb3+ dopant ion. For x <= 0.15, a multiphonon-assisted electric dipole electric quadrupole mechanism of energy transfer dominates, while for the highest concentration of Yb3+ employed, the electron transfer mechanism is confirmed. A temperature-dependent increase of the Ce3+ -> Yb3+ energy transfer rate does not exclusively indicate the electron transfer mechanism. The application of the material to solar energy conversion is indicated.
机译：在石榴石基质Ca2.8-2xCe0.1YbxNa0.1 + xSc2Si3O12（x = 0-0.36）中研究了从Ce3 +蓝色发射到Yb3 +近红外发射的下降。降档不涉及量子切割，但是当Yb3 +掺杂离子的x = 0.36时，一个入射的蓝色光子从Ce3 +转移到Yb3 +，能量转移效率高达90％。对于x <= 0.15，能量转移的多声子辅助电偶极子电四极子机制占主导，而对于最高浓度的Yb3 +，则证实了电子转移机制。 Ce3 +-> Yb3 +能量转移速率随温度的升高并不完全表明电子转移机理。指出了该材料在太阳能转化中的应用。

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