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27‐4: Organic Light‐Emitting Diodes with Directional Polarized Light Emission
Author(s) -
Fu Xiangyu,
Zhu Liping,
Mehta Yash,
Chen Yi-An,
Lei Lei,
Barange Nilesh,
Dong Qi,
Yin Shichen,
Mendes Juliana,
He Siliang,
Gogusetti Renuka,
Chang Chih-Hao,
So Franky
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14687
Subject(s) - oled , materials science , optoelectronics , optics , polarization (electrochemistry) , diode , light emission , waveguide , light emitting diode , photonics , stack (abstract data type) , physics , layer (electronics) , nanotechnology , chemistry , computer science , programming language
Organic light emitting diodes (OLEDs) with directional and polarized light emission have many photonic applications, and beam shaping of these devices is fundamentally challenging because they are Lambertian light sources. In this work, using OLEDs for demonstrations, by selectively diffracting the TE waveguide mode while suppressing other optical modes in a nanostructured substrate, we demonstrated highly directional light emission from a full‐area OLED with a small divergence angle less than 3°, and a TE to TM polarization extinction ratio of 13. The highly selective diffraction of only the TE waveguide mode is possible due to the planarization of the device stack by thermal evaporation and solution processing.