19th seminar - Speaker: Dr. Ho Kim Dan - Ceramics and Biomaterials Research Group, AIMaS

Title: 
Energy transfer and upconversion emission of Tm3+/Tb3+/Yb3+ co-doped transparent glass-ceramics.

Abstract:
The energy transfer and upconversion emission of Tm3+/Tb3+/Yb3+ co-doped transparent glass-ceramics 50SiO2–10AlF3–30BaF2–5TiO2–4LaF3 (SABTL) containing Ba2LaF7 nanocrystals under the changing of heat treatment temperatures and changing concentrations of Tm3+/Tb3+/Yb3+ ions was investigated. The upconversion emission and energy transfer between Tm3+ ions and Tb3+ ions bands around 545 nm (5D4 -> 7F5), 586 nm (5D4 -> 7F4) of Tb3+ ions and bands around 476 nm (1G4 -> 3H6), 651 nm (1G4 -> 3F4), 700 nm (3F2 ->3H6), 804 nm (3F4 ->3H6) of Tm3+ ions were proposed and discussed.

Event image:

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Event Address
Room C302, Tan Phong Campus, 19 Nguyen Huu Tho Street, District 7.
Event Start
Event Time
2pm