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A series of Ce3+, Eu2+ and Ce3+-Eu2+ doped Ca9Al(PO4)7 phosphors are synthesized by a high temperature solid-state method. Under 291 nm excitation, Ca9Al(PO4)7:Ce3+ has one emission band at 356 nm, which is attributed to 4f05d1→4f1 transition of Ce3+. Under 305 nm excitation, Ca9Al(PO4)7:Eu2+ presents one emission band at 445 nm, which is assigned to 4f65d1→4f7 transition of Eu2+. Energy transfer...
A new rare earth complex Tb(p-CIBA)3phen was synthesized and introduced into organic light emitting devices (OLEDs) as emitting material. The Tb(p-CIBA)3phen was doped into PVK to improve the film-forming and hole-transporting property. Two kinds of devices were fabricated. The device structure is as the following. Single-layer device: ITO/PVK: Tb(p-CIBA)3phen/LiF/Al; double-layer device: ITO/PVK:...
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