Highly enhanced upconversion luminescence in lanthanide-doped active-core/luminescent-shell/active-shell nanoarchitectures. Issue 13 (9th March 2016)

• Record Type: Journal Article
• Authors: Ding, Mingye; Chen, Daqin; Ma, Danyang; Dai, Jianbin; Li, Yuting; Ji, Zhenguo
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 13(2016)
• Page Start: 2432
• Page End: 2437
• Publication Date: 2016-03-09
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc00163g
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Through active-core/luminescent-shell/active-shell engineering in lanthanide-doped fluoride nanocrystals, significant enhancement of UC emission intensity has been successfully realized under the synergistic action of double sensitization and suppression effects. Abstract : We reported a new strategy to remarkably improve upconversion luminescence of Ln 3+ -doped nanoparticles via an active-core/luminescent-shell/active-shell engineering technique. By optimization of the structure of a NaGdF4 :Yb@NaYF4 :Yb/Er@NaGdF4 :Yb sandwich-like nanoarchitecture, a significant enhancement of upconversion emission intensity was realized with the help of the synergistic actions of the suppression of Er-defect energy transfer and the efficient energy transfer from Yb 3+ in both active-core and active-shell to Er 3+ in the luminescent-shell layer.