chapter  15
18 Pages

Organic Light-Emitting Diodes and Photodetectors for Optical Communications

WithYutaka Ohmori

Solution Process ....................................................................................... 516 15.4 Discussions for OPDs Fabricated by Vacuum and

Solution Process ....................................................................................... 521 15.5 Summary ................................................................................................... 526 Acknowledgments .............................................................................................. 527 References ............................................................................................................. 527

Organic light-emitting diodes (OLEDs) utilizing fl uorescent dyes [1-3] or conducting polymers [4,5] have attracted great interest because of their advantages in thin-fi lm fl at-panel display or illumination use. An additional advantage is that they are simple for fabrication on various kinds of substrates, including polymeric substrates, and can be formed by solution process. Further, OLEDs have a high potential for use in the next generation of information technology system, in particular for signal processing and optical sensing systems with fl exible devices for mobile use [6]. Organic photodetectors (OPDs) utilizing organic materials are useful being light in weight and easy to handle in the fabrication process and due to the fact that the wavelength can be selected by choosing organic materials with suitable absorption wavelength. Prof. Forrest’s group demonstrated a high-speed response of multilayer OPDs under the irradiation of a red single-pulsed intense laser light [7].