Printed Flexible Organic Light-Emitting Diodes

Abstract

Printed flexible organic light-emitting diodes (OLEDs) hold great promise because of their self-emitting property, high luminous efficiency, wide viewing angle, full-color capability, high contrast, lower power consumption, light weight, and flexibility. They are revolutionizing next-generation flat-panel display technology. While OLED displays can be fabricated on large area and flexible substrates, a stream of new OLED products has reached the marketplace. Although this field is growing well, some grand challenges still remain. More multidisciplinary studies would be needed to address the critical issues, from fluorescent, phosphorescent and Thermally Activated Delayed Fluorescence (TADF) emitters for OLEDs, blue and white OLEDs as well as QOLEDs, to metal-containing nanomaterials in the optimization of OLED performance. Many aspects of the field use a number of materials design and device tactics. This chapter will address working principles and device structure, materials, and components used for general OLEDs, white lighting OLEDs, and flexible quantum dot OLEDs.KeywordsOrganic light-emitting diodeSelf-emittingLuminous efficiencyFull-color capabilityFlat-panel displayIncandescenceLuminescenceWhite lightElectron-transport layerHole transport layer