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Improving organic light-emitting diode performance with patterned structures

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Abstract

The influence nano- and micro- structures on light extraction and carrier injection characteristics in organic light-emitting diodes (OLEDs) is examined. The results demonstrate device enhancement from two distinctive patterning scales: embedded microstructure arrays for improved light extraction and imprinted nanostructures for carrier injection enhancement. Further, based on these results, a two-level imprinting stamp is designed which simultaneously produces a micron-sized pattern for facilitating light extraction and a nanometer-sized pattern to improve carrier injection. Additionally, this scalable patterning technology circumvents imprinting misalignment while preserving its compatibility with rollto- roll technology.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA, 94720, USA

    Michael Fina, Deang Liu, Li Ren & Samuel S. Mao

Authors
  1. Michael Fina
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  2. Deang Liu
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  3. Li Ren
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  4. Samuel S. Mao
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Correspondence to Samuel S. Mao.

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Fina, M., Liu, D., Ren, L. et al. Improving organic light-emitting diode performance with patterned structures. Appl. Phys. A 105, 323–327 (2011). https://doi.org/10.1007/s00339-011-6616-5

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  • DOI: https://doi.org/10.1007/s00339-011-6616-5

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