White OLED Devices

Introduction of a triphenylamine substituent on pyridyl rings as a springboard for a new appealing brightly luminescent 1,3-di-(2-pyridyl)benzene platinum(ii) complex family

“…32–34 For this reason, square planar platinum( ii ) complexes have become a centre of interest for the preparation of organic light-emitting diodes (OLEDs) which earned a pivotal position for solid-state lighting applications and full-color flat-panel display. 35,36 Due to their geometrical structure which favours the creation of aggregates or excimers by Pt–Pt or ligand–ligand intermolecular interactions, 20,37–42 they are a useful tool for the fabrication of deep-red to near infrared (NIR) OLEDs which have unique applications in optical communication, night-vision readable displays, and photodynamic therapy. 20,43–45 Moreover, platinum( ii ) aggregates, characterized by low-energy red to NIR emissions and by relatively long phosphorescence lifetimes, are especially attractive for application in biological imaging with the aim of improving the accuracy of medical diagnosis.…”

Highly Simplified Reddish Orange Phosphorescent Organic Light-Emitting Diodes Incorporating a Novel Carrier- and Exciton-Confining Spiro-Exciplex-Forming Host for Reduced Efficiency Roll-off

“…Nowadays, organic light emitting diodes (OLEDs) are exhibiting distinguished characteristics, for instance, extensive viewing angles, striking color rendering, physiologically friendly, easily fabricating large-area plane light source, and flexiblility. − The rapid progress of red light occupying the wavelength from 600 to 700 nm helps to solve environmental issues in artificial illumination of agricultural and medical treatment. , Meanwhile, red color is an important one of the three primary colors of OLEDs for flat-panel displays, and reddish orange OLEDs play an important role as complementary color devices in white solid-state lightings. Until today, an enormous effort has been made to demonstrate state-of-the-art red phosphorescent OLEDs (PhOLEDs) with both good stability and high power efficiency (PE).…”