Study of the characteristics of phosphorescent red organic light emitting diode using new iridium(III) complex with thiophene as dopant material. (12th December 2017)

• Record Type: Journal Article
• Authors: Lee, Seo Yun; Lee, Song Eun; Oh, Ye Na; Shin, Dong Myung; Kim, Young Kwan; Kim, Hyun Kyung
• Is Part Of: Molecular crystals and liquid crystals. Volume 659(2017)
• Page Start: 108
• Page End: 114
• Publication Date: 2017-12-12
• Subjects: Iridium(III) complexes -- phosphorescent organic light-emitting diodes -- red dopant; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2018.1450946
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: New red phosphorescent iridium(III) complex, (TP-MQ)2 Ir(tmd) was synthesized for red emitter of the phosphorescent organic light-emitting diodes (phOLEDs). The ligands have sites of both the electron donor and acceptor in a molecule. The main ligands consisted of electron-donors Thiophene and electron-acceptor 4-methylquinoline were synthesized by Suzuki coupling reaction. The iridium(III) complexes based on main ligands and 2, 2, 6, 6-tetramethyl-3, 5-heptanedione(tmd) ancillary ligand were synthesized by Nonoyama reaction. Their luminescence property was investigated by UV-visible spectroscopy and photoluminescence (PL) spectroscopy. The manufactured OLED were characterized by investigation of electroluminescence spectrum, current density-voltage-luminance, power efficiency, external quantum efficiency and life time.