Journal
ADVANCED MATERIALS
Volume 25, Issue 6, Pages 856-860Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201203641
Keywords
upconversion; nanocrystals; lanthanides; energy transfer; white light
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Funding
- Department of Science and Technology (DST)
- Indian Institute of Science Education and Research (IISER)-Kolkata
- UGC
- IISER-Kolkata
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The upconversion process is reported to occur via interparticle energy transfer (IPET) achieved with Ln(3+)-doped BaLuF5 (Ln = Tm and Yb) nanocrystals in the size range of sub 5 nm. Both Yb3+ and Tm3+ 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.
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