Optical materials for organic light-emitting devices

The article provides a brief review of typical classes of optical materials for organic light-emitting-devices (LEDs) that includes fluorescent materials, phosphors, electron donor-acceptor and line-like emitting molecular systems. The emphasis is on low-molecular weight materials though the role of polymers is mentioned. A great deal of progress in improving efficiency and spectral properties of organic LEDs is demonstrated based on analyses of electronic processes in organic optical materials. (c) 2007 Elsevier B.V. All rights reserved.