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- W3111187153 abstract "We report the operation characteristics of green tris-(8-hydroxyquinoline)aluminium (Alq3) organic light emitting devices (OLEDs) with a N, N′-bis-(1-naphthyl)-N, N′-diphenyl-1, 1′-biphenyl-4, 4′-diamine (NPB) hole transport layer forming by either vacuum evaporation or solution processing. The maximum luminous yield of device having a vacuum-deposited NPB layer was 2.97 cdA-1 while that of device with solution-processed NPB layer was 2.56 cdA-1. To evaluate the operation characteristics of OLED devices, current densities with respect to bias voltages were investigated by using a modified Shockley equation. Similar behavior was obtained for ideality factors n in two types of devices suggesting the equivalent potential barriers and interface states for injection of holes from indium tin oxide anode to Alq3 emission layer. However, a lower parasitic series resistance (RS) and significant larger saturation current density (J0) were observed from the device with vacuum deposition method, which we attributed to a more dense and homogeneous NPB layer that is more favorable for hole current flow." @default.
- W3111187153 created "2020-12-21" @default.
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- W3111187153 date "2021-01-01" @default.
- W3111187153 modified "2023-10-11" @default.
- W3111187153 title "Characterization of vacuum-deposited and solution-processed N, N′-bis-(1-naphthyl)-N, N′-diphenyl-1, 1′-biphenyl-4, 4′-diamine hole transport layers based organic light emitting devices" @default.
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- W3111187153 doi "https://doi.org/10.1016/j.optmat.2020.110708" @default.
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