title: Flexible white organic light-emitting devices with a porous red polymer layer and a blue small molecular layer utilizing a phase separation of blended polymer.
abstract: Flexible white organic light-emitting devices (WOLEDs) with an emitting layer consisting of a porous red poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV) polymer layer and a blue 4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl (DPVBi) small molecular layer were fabricated on polyethylene terephthalate substrates. The current density of the flexible WOLEDs fabricated with a blend layer formed with a higher spincoating speed was significantly higher than that of a device fabricated with a lower spincoating speed, due to the higher pore density. The ratio between the red and the blue color peak intensities of the electroluminescence spectra for the flexible WOLEDs with a porous red MEH-PPV polymer layer and a blue DPVBi small molecular layer was controlled by the spincoating speed of the blend layer.
authors: Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, Korea.
authors: Young Pyo
authors: YP
authors: Jeon
authors: Yo Sub
authors: YS
authors: Ko
authors: Dong Chul
authors: DC
authors: Choo
authors: Tae Whan
authors: TW
authors: Kim