Photon Generation and Dissipation in Organic Light-Emitting Diodes

By using phosphorescent and thermally activated delayed fluorescence emitters, the internal quantum efficiency of organic light-emitting diodes (OLEDs) can now reach 100%. However, a major fraction of generated photons is trapped inside the device, because of the intrinsic multi-layer device structure and the mismatch of refractive indices. This thesis comprises different approaches for the efficiency enhancement of planar OLEDs. In particular, outcoupling strategies to extract trapped photons to obtain highly efficient OLEDs are investigated.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Technische Universität Dresden

Year

2019

Author dc:creator

• Li, Yungui

Contributors dc:contributor

• Reineke, Sebastian
• Leo, Karl
• Tu, Gouli

• organic light-emitting diodes
• photon generation
• photon dissipation
• organische Leuchtdioden
• Photonenerzeugung
• Photonendissipation