Unique Spectral Overlap and Resonant Energy Transfer between Europium(II) and Ytterbium(III) Cations: No Quantum Cutting

Lei Zhou; Peter A Tanner; Weijie Zhou; Yeye Ai; Lixin Ning; Mingmei M Wu; Hongbin Liang

doi:10.1002/anie.201703331

Unique Spectral Overlap and Resonant Energy Transfer between Europium(II) and Ytterbium(III) Cations: No Quantum Cutting

Angew Chem Int Ed Engl. 2017 Aug 21;56(35):10357-10361. doi: 10.1002/anie.201703331. Epub 2017 Jul 19.

Authors

Lei Zhou¹, Peter A Tanner², Weijie Zhou¹, Yeye Ai¹, Lixin Ning³, Mingmei M Wu¹, Hongbin Liang¹

Affiliations

¹ MOE Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P.R.China.
² Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong S.A.R., P.R. China.
³ Anhui Province Key Laboratory of Optoelectric Materials Science and Technology, Department of Physics, Anhui Normal University, Wuhu, Anhui, 241000, P.R. China.

PMID: 28649746
DOI: 10.1002/anie.201703331

Abstract

Samples of the Ca₃ Sc₂ Si₃ O₁₂ (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 %.

Keywords: electron transfer; lanthanides; photochemistry; quantum cutting; silicates.

Publication types

Research Support, Non-U.S. Gov't