OLED light extraction with corrugated substrate and hemispherical lens (Conference Presentation)

Xiangyu Fu; Cheng Peng; Dong-Hun Shin; Monica Samal; Franky So

doi:10.1117/12.2275554

19 September 2017 OLED light extraction with corrugated substrate and hemispherical lens (Conference Presentation)

Xiangyu Fu, Cheng Peng, Dong-Hun Shin, Monica Samal, Franky So

Proceedings Volume 10362, Organic Light Emitting Materials and Devices XXI; 103620K (2017) https://doi.org/10.1117/12.2275554
Event: SPIE Organic Photonics + Electronics, 2017, San Diego, California, United States

Abstract

While the internal quantum efficiency of an OLED can reach 100%, its external quantum efficiency (EQE) is limited to 30% because of light trapped in waveguided mode, SPP mode and substrate mode. In this study, we achieve more than 2X enhancement in EQE by using a corrugated substrate and a hemispherical lens. Polarized angle-resolved electroluminescence spectroscopy is used to analyzed the EL data, and the results are compared with optical simulation. We find the efficiency enhancement mainly comes from the diffraction of the SPP mode towards air mode due to the corrugated substrate, and the hemispherical lens assists the light extraction by extending the air cone into the substrate mode.

Conference Presentation

Citation Download Citation

Xiangyu Fu, Cheng Peng, Dong-Hun Shin, Monica Samal, and Franky So "OLED light extraction with corrugated substrate and hemispherical lens (Conference Presentation)", Proc. SPIE 10362, Organic Light Emitting Materials and Devices XXI, 103620K (19 September 2017); https://doi.org/10.1117/12.2275554

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