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An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays

Year: 2013
Type: article
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 40° compared to 0° for reference device using bare ITO-glass. The best device showed a peak luminance efficiency of 95.5 ± 1.5 cd/A at 0° emission (external quantum efficiency—EQE of 38.5 ± 0.1%, power efficiency of 127 ± 1 lm/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).
DOI: 10.1063/1.4791786
Authors: S. W. Liu, J. X. Wang, Y. Divayana, K. Dev, S. T. Tan, H. V. Demir, X. W. Sun
Institutions: Nanyang Technological University, LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, Udayana University, Bilkent University, National Nanotechnology Research Center, Southern University of Science and Technology
Language: English
Open Access status: bronze
Awards: G1569229558, G1923744792, G2451336952, G2649583732, G269821124, G2719995234, G2953462872, G3202718425, G3652172050, G4506606928, G4513056784, G527816800, G6487635652, G6889492153, 全无机半导体量子点发光二极管及其光谱可控性研究, G951435793
OpenAlex ID: W1976206397
FWCI: 2.357
Cites: 22
Cited by: 20
Related to: 10