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Sub‐5 nm Ln 3+ ‐doped BaLuF 5 Nanocrystals: A Platform to Realize Upconversion via Interparticle Energy Transfer (IPET)
Author(s) -
Sarkar Shyam,
Meesaragandla Brahmaiah,
Hazra Chanchal,
Mahalingam Venkataramanan
Publication year - 2013
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.201203641
Subject(s) - photon upconversion , nanocrystal , materials science , doping , energy transfer , nanotechnology , engineering physics , optoelectronics , physics
The upconversion process is reported to occur via interparticle energy transfer (IPET) achieved with Ln 3+ ‐doped BaLuF 5 (Ln = Tm and Yb) nanocrystals in the size range of sub 5 nm. Both Yb 3+ and Tm 3+ ions are independently doped in BaLuF 5 nanocrystals. Colloidal mixtures containing the above two nanocrystals show strong upconversion emission in the blue, red, and near‐IR regions via IPET.