Cyclometallated platinum(ii) complexes of 1,3-di(2-pyridyl)benzenes for solution-processable WOLEDs exploiting monomer and excimer phosphorescence
Articolo
Data di Pubblicazione:
2011
Citazione:
Cyclometallated platinum(ii) complexes of 1,3-di(2-pyridyl)benzenes for solution-processable WOLEDs exploiting monomer and excimer phosphorescence / W. Mroz, C. Botta, U. Giovanella, E. Rossi, A. Colombo, C. Dragonetti, D. Roberto, R. Ugo, A. Valore, J.A.G. Williams. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 21:24(2011), pp. 8653-8661.
Abstract:
Two cyclometallated platinum(ii) complexes, N^C^N-5-fluoro-1,3-di(2- pyridyl)benzene platinum(ii) chloride, FPtCl, and N^C^N-5-methyl-1,3-di(2- pyridyl)benzene platinum(ii) isothiocyanate, MePtNCS, have been synthesized and characterized. Both complexes are highly efficient phosphorescent green emitters which can also display excimer emission in the red region. They have been studied as triplet emitters in solution-processed, multilayer organic light-emitting diodes (OLEDs), together with the known complex of 5-methyl-1,3-di(2-pyridyl)benzene, MePtCl, for comparison. The trend in efficiencies of the OLEDs prepared correlates with the charge-trapping properties of the complexes. The most efficiently emitting complex, FPtCl, was used as the dopant in a solution-processed white OLED, employing monomer and excimer emission.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
light-emitting-diodes; electroluminescent devices; quantum efficiency; hole transport; emission; polymer; luminescence; photophysics; ligands; color
Elenco autori:
W. Mroz, C. Botta, U. Giovanella, E. Rossi, A. Colombo, C. Dragonetti, D. Roberto, R. Ugo, A. Valore, J.A.G. Williams
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