Highly efficient organic electroluminescent devices based on cyclometallated platinum complexes as new phosphorescent emitters

High efficiency electroluminescence (EL) in organic light emitting diodes (OLED) was achieved using cyclometallated platinum(II) complexes as new phosphorescent emitters. OLEDs containing bis[2-(2-thienyl)pyridine]platinum(II) [Pt(thpy)2] or bis[2-(5-trimethylsilanyl-2-thienyl)-pyridine]platinum(II)...

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Bibliographic Details
Published in:Synthetic metals 2004-12, Vol.147 (1-3), p.253-256
Main Authors: Cocchi, M., Virgili, D., Sabatini, C., Fattori, V., Marco, P. Di, Maestri, M., Kalinowski, J.
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Optoelectronic devices
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:High efficiency electroluminescence (EL) in organic light emitting diodes (OLED) was achieved using cyclometallated platinum(II) complexes as new phosphorescent emitters. OLEDs containing bis[2-(2-thienyl)pyridine]platinum(II) [Pt(thpy)2] or bis[2-(5-trimethylsilanyl-2-thienyl)-pyridine]platinum(II) [Pt(thpy-SiMe3)2] show a high external EL quantum yield reaching 5.4 and 11.5% photon/electron, respectively. Both electroluminescent spectra fall in the “amber” color region defined by the automotive lighting standards; specifically the CIE coordinates are (0.58; 0.42) for Pt(thpy)2 and (0.60; 0.39) for Pt(thpy-SiMe3)2.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2004.05.021