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Colloidal Tm 3+ /Yb 3+ ‐Doped LiYF 4 Nanocrystals: Multiple Luminescence Spanning the UV to NIR Regions via Low‐Energy Excitation
Author(s) -
Mahalingam Venkataramanan,
Vetrone Fiorenzo,
Naccache Rafik,
Speghini Adolfo,
Capobianco John A.
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200901174
Subject(s) - materials science , nanocrystal , excitation , luminescence , dopant , doping , laser , thermal decomposition , scintillation , optoelectronics , nanotechnology , optics , physics , chemistry , organic chemistry , quantum mechanics , detector
Highly dispersible Tm 3+ /Yb 3+ ‐doped LiYF 4 nanocrystals were synthesized using a thermal decomposition method. Upon excitation with a NIR diode laser (980 nm), the dilute dispersion of the nanocrystals exhibits several strong emissions in regions spanning the deep‐UV to NIR, all originating from a single dopant/sensitizer (Tm 3+ /Yb 3+ ) combination. The material is envisioned to have potential interests in anti‐counterfeiting, biomedicine and solution‐based scintillation applications.