Controlled synthesis and upconversion luminescence properties of LiYF4:Yb0.2Er0.02nanoparticles

2016 ◽  
Vol 3 (7) ◽  
pp. 075005 ◽  
Author(s):  
Dan Zhang ◽  
Gejihu De ◽  
Lu Zi ◽  
Yueshan Xu ◽  
Songtao Liu
Keyword(s):  
Upconversion Luminescence ◽  
Luminescence Properties ◽  
Controlled Synthesis

Controlled synthesis and upconversion luminescence properties of heterogeneous isomorphism Yb3+/Er3+ co-doped Na0.9Ca0.9Gd1.1F6 nanorods with multiple luminescence centers

CrystEngComm ◽  
2021 ◽  
Author(s):  
Ruijun Tang ◽  
Jianxun Wang ◽  
Yueshan Xu ◽  
Shasha Wang ◽  
Gejihu De
Keyword(s):  
Rare Earth ◽  
Upconversion Luminescence ◽  
Luminescence Properties ◽  
Controlled Synthesis ◽  
Luminescence Centers ◽  
Luminescence Efficiency ◽  
Co Doped ◽  
Biomedical Fields ◽  
Luminescent Nanocrystals

Rare-earth upconversion luminescent nanocrystals (UCLNCs) have limited their application in biomedical fields due to their low luminescence efficiency. Here, heterogeneous isomorphism Na0.9Ca0.9Gd1.1F6:Yb3+/Er3+ nanorods are successfully obtained using a mild solvothermal...

Upconversion Luminescence Properties of Ho3+, Tm3+, Yb3+ Co-Doped Nanocrystal NaYF4 Synthesized by Hydrothermal Method

2006 ◽  
Vol 24 (6) ◽  
pp. 757-760 ◽  
Author(s):  
Yang Kuisheng ◽  
Li Yan ◽  
Yu Chaoyi ◽  
Lu Liping ◽  
Ye Chanhua ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Luminescence Properties ◽  
Co Doped

Upconversion luminescence properties of Li+-doped ZnWO4:Yb,Er

2008 ◽  
Vol 23 (8) ◽  
pp. 2078-2083 ◽  
Author(s):  
Xi-xian Luo ◽  
Wang-he Cao
Keyword(s):  
Liquid Phase ◽  
Calcination Temperature ◽  
Crystal Field ◽  
Lower Energy ◽  
Upconversion Luminescence ◽  
Peak Position ◽  
Liquid Phase Sintering ◽  
Red Shift ◽  
Luminescence Properties ◽  
Sintering Process

Upconversion luminescence (UPL) characteristics and effects of Li+ ion on the UPL of ZnWO4:Yb,Er polycrystalline phosphors were investigated. It was shown that introduction of Li+ ions could reduce the calcination temperature by about 200 °C and increase the crystallinity of ZnWO4:Yb,Er by a liquid-phase sintering process via formation of Li2WO4 and other intermediates. UPL efficiency is remarkably promoted by Li+ ions. Moreover, the UPL spectrum of Li+-doped ZnWO4:Yb,Er presents a red shift, and the strongest peak position shifts from 553 to 559 nm. These can be attributed to a shift in the 4f level barycenter to lower energy, which results from lowering of the symmetry of the crystal field around Er3+.

Monodisperse YVO4:Eu3+ submicrocrystals: controlled synthesis and luminescence properties

CrystEngComm ◽  
2013 ◽  
Vol 15 (29) ◽  
pp. 5776 ◽  
Author(s):  
Baiqi Shao ◽  
Qi Zhao ◽  
Ning Guo ◽  
Yongchao Jia ◽  
Wenzhen Lv ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Controlled Synthesis
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