Synthesis and tunable photoresponse for core-shell structured NaGdF4:Yb, Er@SiO2@Eu(TTA)3Phen nanocomplexes. (15th July 2018)

• Record Type: Journal Article
• Authors: Li, Yao; Jiao, Jiqing; Yan, Peipei; Liu, Lihua; Wang, Jiuxing; Wang, Yao; Huang, Linjun; Liu, Jixian; Belfiore, Laurence A.; Tang, Jianguo
• Is Part Of: Scripta materialia. Number 152(2018)
• Page Start: 1
• Page End: 5
• Publication Date: 2018-07-15
• Subjects: Lanthanide ion -- Luminescence -- Core-shell -- Photoresponse -- Complexes; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.03.045
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Highly monodispersed core-shell structured NaGdF4 :Yb, Er@SiO2 @Eu(TTA)3 Phen(2-Thenoyltrifluoroacetone (TTA), 1, 10-Phenanthroline monohydrate (Phen)) nanospheres were synthesized via two-step process. These nanospheres with diameter of 13 nm were encapsulated in SiO2 shell via micro-emulsion preparation. The ligand-sensitized Eu complexes attached to the outer surface of SiO2 . The green (542 nm) and red (610 nm) light were excited by NIR and UV illumination, respectively. Thus, tunable photoresponse was possible in the core-shell structured hybrid nanocomposites. Under upconversion process, 5-fold increase at 542 nm and a 14-fold increase at 660 nm could be achieved under 980 nm laser, respectively. Graphical abstract: Unlabelled Image