Transparent electrode of nanoscale metal film for optoelectronic devices

Illhwan Lee; Jong-Lam Lee

doi:10.1117/1.JPE.5.057609

13 May 2015 Transparent electrode of nanoscale metal film for optoelectronic devices

Illhwan Lee, Jong-Lam Lee

Author Affiliations +

Journal of Photonics for Energy, Vol. 5, Issue 1, 057609 (May 2015). https://doi.org/10.1117/1.JPE.5.057609

Abstract

This paper reviews the principles, impediments, and recent progress in the development of ultrathin flexible Ag electrodes for use in flexible optoelectronic devices. Thin Ag-based electrodes are promising candidates for next-generation flexible transparent electrodes. Thin Ag-based electrodes that have a microcavity structure show the best device performance, but have relatively low optical transmittance (OT) due to reflection and absorption of photons by the thin Ag; this trait causes problems such as spectral narrowing and change of emission color with viewing angle in white organic light-emitting diodes. Thinning the Ag electrode to <−10 nm thickness (ultrathin Ag) is an approach to overcome these problems. This ultrathin Ag electrode has a high OT, while providing comparable sheet resistance similar to indium tin oxide. As the OT of the electrode increases, the cavity is weakened, so the spectral width of the emission and the angular color stability are increased.

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Illhwan Lee and Jong-Lam Lee "Transparent electrode of nanoscale metal film for optoelectronic devices," Journal of Photonics for Energy 5(1), 057609 (13 May 2015). https://doi.org/10.1117/1.JPE.5.057609

Published: 13 May 2015

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