Photo- and electroluminescent properties europium complexes using bistriazole ligands

• DOI: 10.1016/j.synthmet.2012.12.020
• Publication Date: 2013-01-22T09:47:55Z
• Authors: Alexey N. Gusev; Victor F. Shul’gin; Galina Nishimenko; Miki Hasegawa; Wolfgang Linert
• Keywords: Europium; Butane; Propane

Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L1) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L2) as ancillary ligands are described. The double-layer-type electroluminescent cells the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL1 (40 nm)/LiF (1 nm)/Al (100 nm) (2) nm)/Eu(DBM)2HL2 emit red light originating from europium complexes. device 2 gives maximum brightness 455 cd/m2 at 19.2 V.