Red Phosphorescent Naphthalene-Based Iridium(III) Complex for Solution-Processed Single-Emissive-Layer White Organic Light-Emitting Diodes

다국어 초록 (Multilingual Abstract)

<P>We designed and synthesized a red phosphorescent iridium(III) complex, (BTMN)(2)Ir(acac), for solution-processed single-emissive-layer organic light-emitting diodes (OLEDs), which contains 2-(4-methoxynaphthalen-1-yl)benzo[d]thiazole (BTMN) as the main ligand and acetylacetone (acac) as the ancillary ligand. The photophysical, electrochemical, and electroluminescent (EL) properties of (BTMN) 2Ir(acac) were investigated. Solution-processed single-emissive-layer red and white OLEDs were fabricated using (BTMN) 2Ir(acac) doped in poly(9-vinylcarbazole) (PVK) as the emitting layer. The EL spectra of (BTMN) 2Ir(acac) exhibited a maximum emission peak at 598 nm with a full-width at half-maximum (FWHM) of 75 nm and Commission Internationale de L'Eclairage (CIE) coordinates of (0.59, 0.37) at 1000 cd.m(-2). In addition, white-light-emitting devices exhibited CIE coordinates of (0.32, 0.38) at 1000 cd.m(-)2, which are close to the standard white-light CIE coordinates of (0.33, 0.33).</P>