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Photo- and electroluminescent properties europium complexes using bistriazole ligands.

Gusev AN, Shul'gin VF, Nishimenko G, Hasegawa M, Linert W - Synth Met (2013)

Bottom Line: Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described.The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes.The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

View Article: PubMed Central - PubMed

Affiliation: Taurida National V.I. Vernadsky University, Simferopol 95007, Ukraine.

ABSTRACT
Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described. The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes. The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

No MeSH data available.


Electroluminescence of complex 2 at 16 V.
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fig0030: Electroluminescence of complex 2 at 16 V.

Mentions: Considering the low electronic conductivity of coordination compounds of lanthanides emitting layer in the OLED is usually located between two additional layers with electron- and hole-conductivity respectively. Pyridyltriazole derivatives established themselves as excellent materials with electron transport properties [17]. The presence of pyridyltriazole fragment in the structure of the title complexes is expected to increase allows the electronic conductivity of the compounds and eliminates the need to use one of the additional layers in the OLED. We created two double-layer-type electroluminescent cell 1-ITO/NPB(40 nm)/Eu(DBM)2·HL1 (40 nm)/LiF (1 nm)/Al (100 nm) and 2 ITO/NPB(40 nm)/Eu(DBM)2·HL2 (40 nm)/LiF (1 nm)/Al (100 nm) with only hole-transporting additional layer. Fig. 5 shows the EL spectra of the resulting device 2 at 16 V.


Photo- and electroluminescent properties europium complexes using bistriazole ligands.

Gusev AN, Shul'gin VF, Nishimenko G, Hasegawa M, Linert W - Synth Met (2013)

Electroluminescence of complex 2 at 16 V.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3584924&req=5

fig0030: Electroluminescence of complex 2 at 16 V.
Mentions: Considering the low electronic conductivity of coordination compounds of lanthanides emitting layer in the OLED is usually located between two additional layers with electron- and hole-conductivity respectively. Pyridyltriazole derivatives established themselves as excellent materials with electron transport properties [17]. The presence of pyridyltriazole fragment in the structure of the title complexes is expected to increase allows the electronic conductivity of the compounds and eliminates the need to use one of the additional layers in the OLED. We created two double-layer-type electroluminescent cell 1-ITO/NPB(40 nm)/Eu(DBM)2·HL1 (40 nm)/LiF (1 nm)/Al (100 nm) and 2 ITO/NPB(40 nm)/Eu(DBM)2·HL2 (40 nm)/LiF (1 nm)/Al (100 nm) with only hole-transporting additional layer. Fig. 5 shows the EL spectra of the resulting device 2 at 16 V.

Bottom Line: Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described.The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes.The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

View Article: PubMed Central - PubMed

Affiliation: Taurida National V.I. Vernadsky University, Simferopol 95007, Ukraine.

ABSTRACT
Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described. The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes. The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

No MeSH data available.