Emergence and control of photonic band structure in stacked OLED microcavities

David Allemeier, Benjamin Isenhart, Ekraj Dahal, Yuki Tsuda, Tsukasa Yoshida and Matthew S. White ()
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David Allemeier: University of Vermont
Benjamin Isenhart: University of Vermont
Ekraj Dahal: University of Vermont
Yuki Tsuda: Yamagata University
Tsukasa Yoshida: Yamagata University
Matthew S. White: University of Vermont

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract We demonstrate an electrically-driven metal-dielectric photonic crystal emitter by fabricating a series of organic light emitting diode microcavities in a vertical stack. The states of the individual microcavities are shown to split into bands of hybridized photonic energy states through interaction with adjacent cavities. The propagating photonic modes within the crystal depend sensitively on the unit cell geometry and the optical properties of the component materials. By systematically varying the metallic layer thicknesses, we show control over the density of states and band center. The emergence of a tunable photonic band gap due to an asymmetry-introduced Peierls distortion is demonstrated and correlated to the unit cell configuration. This work develops a class of one dimensional, planar, photonic crystal emitter architectures enabling either narrow linewidth, multi-mode, or broadband emission with a high degree of tunability.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26440-3

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DOI: 10.1038/s41467-021-26440-3

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