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Updated: May 30, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
Published on: November 16, 2018
Increased and balanced light emission of transparent organic light-emitting diodes by enhanced microcavity effects
Jonghee Lee1, Simone Hofmann, Michael Thomschke
1Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany. jonghee.lee@iapp.de
Abstract:
We report on improved and controlled light outcoupling of transparent organic light-emitting diodes (TOLEDs) by inserting thin silver layers between the indium tin oxide anode and the hole transporting layer. The introduction of Ag layers influences both the bottom and top emission of the TOLEDs, and it results in dramatic changes in the electroluminescence spectra and angular distribution. We find that the overall external quantum efficiency can be increased up to 18.8%, and the ratio of bottom and top emission can be almost identical.
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