期刊
ORGANIC ELECTRONICS
卷 96, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.orgel.2021.106237
关键词
Indium zinc oxide (IZO); Light extraction; Blue phosphorescent light-emitting diodes
资金
- Ministry of Science and Technology (MOST) , Taiwan [1092622E155014, 1082221E155051MY3, 1082912I155504, 1082811E155504, 1072221E155058MY3, 1072221E002156MY3, 1072221E155027, 1073113E155001CC2, 1063113E155001CC2, 1062221E155036, 1062923E155002MY3, 1062923E002004MY3, 1052221E002130MY3]
- European Union [823720]
- Marie Curie Actions (MSCA) [823720] Funding Source: Marie Curie Actions (MSCA)
By using a corrugated indium zinc oxide thin film and attaching a hemispheric macrolens, the external quantum efficiency of a blue phosphorescent organic light-emitting device was significantly increased, resulting in a 1.83 times higher efficiency compared to a planar device.
A corrugated indium zinc oxide thin film was fabricated on a glass substrate at room temperature for use in a blue phosphorescent organic light-emitting device (OLED) to facilitate device efficiency in term of the external quantum efficiency (EQE) of the device, which increased from 28.77% to 34.33% after the fabrication of the aforementioned layer. Furthermore, a remarkably high EQE of 52.51% was achieved through external light extraction by attaching a hemispheric macrolens on the substrate of the device. Consequently, the efficiency of the developed blue phosphorescent OLED became 1.83 times higher than that of a planar counterpart. Moreover, this finding was verified through theoretical analyses, that indicated the underlying light extraction physics was attributed to the efficient extraction of trapped light from the surface plasmon polariton, waveguide, and substrate modes. (submitted to Organic Electronics).
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