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Self‐Assembled NaY(WO 4 ) 2 Hierarchical Dumbbells: Microwave‐Assisted Hydrothermal Synthesis and Their Tunable Upconversion Luminescent Properties
Author(s) -
Zhang Jingchao,
Wang Wei,
Li Benxian,
Zhang Xinhao,
Zhao Xudong,
Liu Xiaoyang,
Zhao Ming
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201101168
Subject(s) - luminescence , hydrothermal circulation , chemistry , photon upconversion , trisodium citrate , ytterbium , doping , ion , activator (genetics) , luminescent measurements , hydrothermal synthesis , fluorescence , phosphor , hydrothermal reaction , excitation , photochemistry , nanotechnology , nuclear chemistry , chemical engineering , optoelectronics , materials science , optics , organic chemistry , physics , biochemistry , electrical engineering , gene , engineering
Abstract Micronano self‐assembled NaY(WO 4 ) 2 hierarchical dumbbells were synthesized by a microwave‐assisted hydrothermal approach, followed by a heat treatment. The growth mechanism of the precursor was investigated and it was found that the amount of trisodium citrate plays a crucial role in the assembly process of the precursor. Under 980 nm excitation, Yb 3+ /Er 3+ , Yb 3+ /Tm 3+ , and Yb 3+ /Ho 3+ codoped NaY(WO 4 ) 2 samples exhibit strong green, blue, and yellow emissions, respectively. The luminescence colors of Yb 3+ /Ho 3+ /Tm 3+ tridoped NaY(WO 4 ) 2 samples can be tuned from blue through white to yellow by simply adjusting the doping concentrations of the activator ions under 980 nm excitation. The tunable luminescence may be potentially applied in fields such as light display systems and multicolor biological labeling.