Synthesis, characterization, and luminescent properties of a red-emitting Europium complex

Document Type

Conference Proceeding

Publication Date

6-4-2012

Abstract

a fluorine functionalized 1,10-phenanthroline ligand, 3-ethyl-2-(2- fluorophenyl) imidazo[4,5-f]1,10-phenanthroline(EFPIP) and the corresponding red-emitting Eu(III) complex Eu(DBM) 3(EFPIP) (DBM = dibenzoylmethanate) was synthesized and the photophysical properties and electroluminescent(EL) performances were researched. When Eu(DBM) 3(EFPIP) was used as emitting material in organic devices, the maximum efficiency and luminance of red emission achieved from the EL device with the configuration of ITO/m-MTDATA (30 nm)/NPB (20 nm)/x wt% Eu(DBM) 3(EFPIP) doped in CBP (30 nm)/Bphen (20 nm)/Alq 3 (20 nm)/LiF (0.8 nm)/Al were 3.6 cd/A and 563 cd/m 2, respectively. Compared with the previously reported devices based on methyl or chlorine substitute Eu(III) complexes, the EL performances of the device using Eu(DBM) 3(EFPIP) as an emitter was significantly enhanced due to the introduction of fluorine. © (2012) Trans Tech Publications, Switzerland.

Publication Source (Journal or Book title)

Advanced Materials Research

First Page

1771

Last Page

1775

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