Highly Efficient Multicolor Up-Conversion Emissions and Their Mechanisms of Monodisperse NaYF 4 :Yb,Er Core and Core/Shell-Structured Nanocrystals
Beijing National Laboratory for Molecular Sciences · State Key Laboratory of Rare Earth Materials Chemistry and Application · +2 more institutions
Abstract
This paper comprehensively presents the highly efficient multicolor up-conversion (UC) emissions and related mechanisms of monodisperse NaYF4:Yb,Er core (α- and β-NaYF4:Yb,Er) and core/shell (α-NaYF4:Yb,Er@α-NaYF4 and β-NaYF4:Yb,Er@α-NaYF4) nanocrystals with controlled size (5−14 nm for α-phase nanocrystals and 20−300 nm for β-phase nanocrystals), chemical composition, and surface state. These nanoparticles were synthesized via a unique delayed nucleation pathway using trifluoroacetates as precursors in hot solutions of oleic acid/oleylamine/1-octadecene. With the naked eye and natural light the intense multicolor UC emissions (red, yellow, or green, without filters) can be observed in cyclohexane dispersions…
Citation impact
- FWCI
- 13.98
- Percentile
- 100%
- References
- 51
Authors
4- HMHaoxin MaiCorresponding
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Application, University of Hong Kong, Peking University
- YZYa‐Wen Zhang
State Key Laboratory of Rare Earth Materials Chemistry and Application, Beijing National Laboratory for Molecular Sciences, Peking University, University of Hong Kong
- LSLing‐Dong Sun
State Key Laboratory of Rare Earth Materials Chemistry and Application, Beijing National Laboratory for Molecular Sciences, Peking University, University of Hong Kong
- CYChun‐Hua Yan
Beijing National Laboratory for Molecular Sciences, University of Hong Kong, State Key Laboratory of Rare Earth Materials Chemistry and Application, Peking University
Topics & keywords
- Oleylamine
- Nanocrystal
- Materials science
- Nucleation
- Crystallite
- Excited state
- Dispersity
- Nanoparticle