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Journal Article
Extracting Internal Modes of Top Emission Organic Light Emitting Diodes by Using Internal Random Mesoscopic Wrinkles
- Authors
- Jong Chan Jeong, Kie Young Woo, Hyunsu Cho, Yong-Hoon Cho, Nam Sung Cho, Sung Yun Yang, Jaehyun Moon
- Issue Date
- 2021-04
- Citation
- Journal of Industrial and Engineering Chemistry, v.96, pp.163-168
- ISSN
- 1226-086X
- Publisher
- 한국공업화학회
- Language
- English
- Type
- Journal Article
- Abstract
- Angular electroluminescence spectra stabilized and efficiency enhanced top-emitting organic light-emitting devices (TOLEDs) were demonstrated using randomly distributed mesoscopic internal wrinkles. Compared to planar TOLEDs, wrinkled TOLEDs showed a faster exciton decay rate in the emissive layer and high rate of radiative recombination, which leads to enhanced efficiency. Our wrinkled TOLEDs showed angular spectral dependency (u?쾤??(罐)) of 0.0032, which is low enough to be imperceptible to the human eyes, and 38.7 % enhanced external quantum efficiency relative to the planar counterpart. The approach described here provides an effective scheme for improving TOLEDs and obviating the necessity of modifying the stack structure of the device.
- KSP Keywords
- Electroluminescence spectra, Enhanced efficiency, External Quantum Efficiency, High-rate, Organic light-emitting devices, Radiative recombination, Stack structure, Top emission, decay rate, emissive layer(EL), light emitting diodes(LED)
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
(CC BY NC ND)
