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Luminescent NaYF 4 :Yb,Er upconversion nanocrystal colloids: Towards controlled synthesis and near‐infrared optical response
Author(s) -
Duong Hau V.,
Truong QuyTung,
Tran ThaiHoa,
Nguyen ThanhDinh,
Viet Long Nguyen
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22851
Subject(s) - photon upconversion , nanocrystal , photoluminescence , materials science , luminescence , nanotechnology , nanomaterials , infrared , quantum dot , lanthanide , ytterbium , doping , optoelectronics , chemistry , optics , ion , organic chemistry , physics
Lanthanide‐doped upconversion nanocrystals are an emerging class of near‐IR‐sensitive luminescent nanomaterials that have aroused widespread interest in the investigation of their unique optical properties for sensing, biomedical, and energy applications. In this work, we have hydrothermally prepared NaYF 4 :Yb,Er upconversion nanocrystals that can respond with brilliant photoluminescence to near‐infrared laser light. The structural phase of the NaYF 4 :Yb,Er upconversion nanocrystals can be controlled by extending the hydrothermal reaction to visibly tune their emission intensity. The highly photoluminescent NaYF 4 :Yb,Er colloidal nanocrystals are subsequently assembled in host matrices of hard substrates and polymethyl methacrylate plastics by colloidal solution solidification to fabricate optical display components that may be useful as a potential alternative for fingerprint identification and encryption.