Details

Autor(en) / Beteiligte

• Cho, Woosum
• Sarada, Ganguri
• Lee, Hyungjin
• Song, Myungkwan
• Gal, Yeong-Soon
• Lee, Youngu
• Jin, Sung-Ho

Titel

Highly efficient, conventional and flexible deep-red phosphorescent OLEDs using ambipolar thiophene/selenophene-phenylquinoline ligand-based Ir(III) complexes

Ist Teil von

• Dyes and pigments, 2017-01, Vol.136, p.390-397

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Highly efficient conventional and flexible deep-red phosphorescent OLEDs (PhOLEDs) were developed by using glass (substrate)/indium tin oxide (ITO, transparent conducting electrode, TCE) and polyethylene naphthalate (PEN, substrate)/silver nanowire (AgNW, TCE). A thiophene-phenylquinoline (Th-PQ)-based Ir(III) complex, (Th-PQ)3Ir, which has already been confirmed as a promising emitter in solution-processed PhOLEDs, and a new selenophene-PQ (Se-PQ)-based Ir(III) complex, (Se-PQ)3Ir, were verified as emitters in conventional and flexible PhOLEDs. Both (Th-PQ)3Ir and (Se-PQ)3Ir exhibited bright red emission (601 nm and 614 nm) in chloroform at room temperature. (Th-PQ)3Ir showed excellent performance not only in solution-processed devices but also in the conventional and flexible PhOLEDs fabricated by vapor deposition. (Th-PQ)3Ir exhibited a maximum external quantum efficiency (EQE) of 19.83% and 21.33% in conventional and flexible PhOLEDs, respectively, with stable deep-red CIE coordinates (0.66, 0.34). [Display omitted] •Thiophene/selenophene-phenylquinoline based Ir(III) complexes were used as emitters.•Both the conventional (glass/ITO) and flexible (PEN/AgNW) PhOLEDs were fabricated.•PhOLED of selenophene complex shows saturated red coordinates (0.68, 0.32).•Thiophene based complex shows nearly 20% or more EQE in normal and flexible devices.