Journal of Materials Research
November 2005— Volume 20, Number 11

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Significant increment of photoluminescence quantum yield by efficiently prohibiting fluorescence quenching in erbium(III) organic complexes Yigang Li The State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China Hong Yang The Institute for Advanced Materials, Fudan University, Shanghai 200433, People's Republic of China Zian He, Liying Liu, and Wencheng Wang The State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China Fuyou Li The Institute for Advanced Materials, Fudan University, Shanghai 200433, People's Republic of China Lei Xu The State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China

A systematic investigation and comparison of the photoluminescence (PL) quantum yields of six erbium(III) organic complexes are reported. We demonstrated that the PL quantum yield could be significantly improved by getting rid of OH and CH groups in the complexes. Moreover, perfluooctanoic acid with neither OH nor CH groups was used as a ligand to form complex with Er³⁺. The quantum yield of the newly synthesized erbium(III) complex was found to be as high as 2%, 100 times higher than ever reported.

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