Abstract

Recent interest in indium-free transparent composite-electrodes (TCEs) has motivated theoretical and experimental efforts to better understand and enhance their electrical and optical properties. Various tools have been developed to calculate the optical transmittance of multilayer thin-film structures based on the transfer-matrix method. However, the factors that affect the accuracy of these calculations have not been investigated very much. In this study, two sets of TCEs, TiO2/Au/TiO2 and TiO2/Ag/TiO2, were fabricated to study the factors that affect the accuracy of transmittance predictions. We found that the predicted transmittance can deviate significantly from measured transmittance for TCEs that have ultra-thin plasmonic metal layers. The ultrathin metal layer in the TCE is typically discontinuous. When light interacts with the metallic islands in this discontinuous layer, localized surface plasmons are generated. This causes extra light absorption, which then leads to the actual transmittance being lower than the predicted transmittance.

Original languageEnglish (US)
Article number205304
JournalJournal of Applied Physics
Volume118
Issue number20
DOIs
StatePublished - Nov 28 2015

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transmittance
composite materials
electrodes
predictions
metals
electromagnetic absorption
plasmons
matrix methods
indium
surface layers
electrical properties
optical properties
causes
thin films

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Prediction of transmittance spectra for transparent composite electrodes with ultra-thin metal layers. / Zhao, Zhao; Khorasani, Arash Elhami; Theodore, N. D.; Dhar, A.; Alford, Terry.

In: Journal of Applied Physics, Vol. 118, No. 20, 205304, 28.11.2015.

Research output: Contribution to journalArticle

Zhao, Zhao ; Khorasani, Arash Elhami ; Theodore, N. D. ; Dhar, A. ; Alford, Terry. / Prediction of transmittance spectra for transparent composite electrodes with ultra-thin metal layers. In: Journal of Applied Physics. 2015 ; Vol. 118, No. 20.
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