DataVXACS Applied Electronic MaterialsPaper
journal article·2020-07-28

Effect of Refractive Index Contrast on Out-Coupling Efficiency of Corrugated OLEDs using Low-Refractive-Index LiF Interlayer

Wooram Youn, Jae Woong Lee, Hyeonggeun Yu, Do Young Kim

ACS Applied Electronic Materials· Volume 2· Issue 7
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Source abstract

Abstract

In organic light-emitting diodes (OLEDs), the low out-coupling efficiency of 20–30% limits the external quantum efficiency (EQE). Corrugated structures for OLED light extraction can increase the out-coupling efficiency by extracting the thin-film-guided mode as well as the surface plasmon (SP) mode. To further enhance the out-coupling efficiency of a corrugated OLED, we increase the refractive index contrast by incorporating a low-index light out-coupling layer in the device and the resulting OLED has an external quantum efficiency of 67%. By fabricating these corrugated OLEDs with the emitting layer located at the first and second antinode positions, we confirm that the enhanced extraction comes from the enhanced extraction of thin-film-guided modes.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Organic Electronics and Photovoltaics · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States

Advanced Process and Materials R&BD Group, Korea Institute of Industrial Technology, Incheon 21999, Republic of Korea

Advanced Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea

School of Materials Science and Engineering, Oklahoma State University, Tulsa, Oklahoma 74106, United States

Funding

Basic Energy Sciences · Korea Institute of Science and Technology · Korea Institute of Industrial Technology

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