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Title: An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays
Authors: Liu, S. W.
Wang, J. X.
Divayana, Yoga
Dev, Kapil
Tan, Swee Tiam
Demir, Hilmi Volkan
Sun, Xiaowei
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2013
Source: Liu, S. W., Wang, J. X., Divayana, Y., Dev, K., Tan, S. T., Demir, H. V., et al. (2013). An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays. Applied physics letters, 102(5).
Series/Report no.: Applied physics letters
Abstract: We report phosphorescent organic light-emitting diodes with a substantially improved light outcoupling efficiency and a wider angular distribution through applying a layer of zinc oxide periodic nanopillar arrays by pattern replication in non-wetting templates technique. The devices exhibited the peak emission intensity at an emission angle of 40º compared to 0º for reference device using bare ITO-glass. The best device showed a peak luminance efficiency of 95.5±1.5 cd/A at 0º emission (external quantum efficiency—EQE of 38.5±0.1%, power efficiency of 127±1lm/W), compared to that of the reference device, which has a peak luminance efficiency of 68.0±1.4 cd/A (EQE of 22.0±0.1%, power efficiency of 72±1 lm/W).
ISSN: 00036951
DOI: 10.1063/1.4791786
Rights: © 2013 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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