Organic Light-Emitting Devices with Tandem Structure

  • Takayuki Chiba
  • Yong-Jin Pu
  • Junji Kido
Part of the following topical collections:
  1. Photoluminescent Materials and Electroluminescent Devices


Tandem organic light-emitting devices (OLEDs) have attracted considerable attention for solid-state lighting and flat panel displays because their tandem architecture enables high efficiency and long operational lifetime simultaneously. In the tandem OLED structure, plural light-emitting units (LEUs) are stacked in series through a charge generation layer (CGL) and an electron injection layer (EIL). In this chapter, we focus on the key features of tandem OLEDs for high efficiency and long operational lifetimes. We also demonstrate the effect of the CGL comprising a Lewis acid, an n-type semiconductor metal oxide, and an organic electron-accepting material. We discuss the two types of EILs in tandem OLEDs: alkali metals containing n-type compounds and ultra-thin metals. Finally, we focus on the recent progress of the state-of-the-art solution-processed tandem OLEDs.


Tandem Charge generation layer p-n junction 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Organic Device Engineering, Research Center for Organic ElectronicsYamagata UniversityYonezawaJapan

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