Lin B.-YLin T.-CChiu T.-LLin J.-HChen C.-HLee J.-HWei M.-K.JIUN-HAW LEE2022-04-252022-04-25202115661199https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107769474&doi=10.1016%2fj.orgel.2021.106237&partnerID=40&md5=15bd69ac2ca33d9271e166976319035ehttps://scholars.lib.ntu.edu.tw/handle/123456789/607219A 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). ? 2021 Elsevier B.V.Blue phosphorescent light-emitting diodesIndium zinc oxide (IZO)Light extractionEfficiencyExtractionOrganic light emitting diodes (OLED)PhosphorescenceQuantum efficiencySubstratesSurface plasmon resonanceZinc oxideBlue phosphorescent light-emitting diodeBlue phosphorescent organic light-emitting diodesExternal quantum efficiencyHigher efficiencyIndium zinc oxideIndium zinc oxidesOrganic light-emitting devicesOxide anodeZinc oxide thin filmsII-VI semiconductors[SDGs]SDG7journal article10.1016/j.orgel.2021.1062372-s2.0-85107769474