2,7-Poly(9-fluorenone): A Trap-Free Electron-Injection Material with a High Charge Carrier Mobility for Use in Light-Emitting Diodes

• Published in: Advanced materials (Weinheim) Vol. 12; no. 12; pp. 905 - 908
• Main Authors: Uckert, F., Tak, Y.-H., Müllen, K., Bässler, H.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 01.06.2000; WILEY‐VCH Verlag GmbH
• Subjects: 2,7‐Poly(9‐fluorenone); 7-Poly(9-fluorenone); Electron-injection material; Light-emitting diodes; Light‐emitting diodes, organic; organic
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/1521-4095(200006)12:12<905::AID-ADMA905>3.0.CO;2-W

Electron‐transporting materials are necessary for organic light‐emitting diodes (OLEDs) if their efficiency is going to be increased sufficiently for commercial application. Evidence is presented that the novel, electron‐deficient polymer 2,7‐poly(9‐fluorenone), see Figure, has the qualities required of an electron‐injection material in multilayer LEDs.