Efficient hole injection in organic light-emitting diodes using polyvinylidenefluoride as an interlayer

• Published in: Journal of luminescence Vol. 130; no. 10; pp. 1708 - 1710
• Main Authors: Jeon, Soon Ok, Soo Yook, Kyoung, Lee, Jun Yeob
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2010; Elsevier
• Subjects: Applied sciences; Barriers; Current density; Devices; Electronics; Exact sciences and technology; High current density; High power efficiency; Interlayers; Light-emitting diodes; Luminescence; Optoelectronic devices; Polyvinylidene fluorides; Polyvinylidenefluoride; Power efficiency; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; High current density; High power efficiency; Polyvinylidenefluoride; Interfacial layer; Hole density; Charge carrier density; Vinylidene fluoride polymer; Polyvinylidenefiuoride; Quantum yield; Energy level; Energy barrier; Light emitting diode
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2010.03.036

The effect of the polyvinylidenefluoride (PVDF) interlayer on the hole injection and the device performances of the green phosphorescent organic light-emitting diodes (PHOLEDs) was investigated. The hole current density of the hole only device was improved and the power efficiency of the green PHOLEDs was enhanced from 10.5 to 12.5 lm/W by the PVDF interlayer. The reduction of the interfacial energy barrier was responsible for the high hole current density in the PVDF interlayer based green PHOLEDs.