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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 325–327

Widely transparent electrodes based on ultrathin metals

D. S. Ghosh, L. Martinez, S. Giurgola, P. Vergani, and V. Pruneri  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 325-327 (2009)
http://dx.doi.org/10.1364/OL.34.000325


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Abstract

Transparent electrodes made of single-component ultrathin ( < 10 nm ) metal films (UTMFs) are obtained by sputtering deposition. We show that the optical transparency of the deposited films (chromium and nickel) is comparable to that of indium tin oxide (ITO) in the visible and near-infrared range ( 0.4 2.5 μ m ) , while it can be significantly higher in the ultraviolet ( 175 400 nm ) and mid-infrared ( 2.5 25 μ m ) regions. Despite their very small thickness, the deposited UTMFs are also uniform and continuous over the 10 cm substrate, as it is confirmed by the measured low electrical resistivity. The excellent optical and electrical properties, stability, compatibility with active materials, process simplicity, and potential low cost make UTMFs high-quality transparent electrodes for the optoelectronics industry, seriously competing with widely used transparent conductive oxides, such as ITO.

© 2009 Optical Society of America

OCIS Codes
(310.1860) Thin films : Deposition and fabrication
(310.3840) Thin films : Materials and process characterization
(310.6188) Thin films : Spectral properties
(310.7005) Thin films : Transparent conductive coatings

ToC Category:
Thin Films

History
Original Manuscript: November 11, 2008
Manuscript Accepted: December 8, 2008
Published: January 27, 2009

Citation
D. S. Ghosh, L. Martinez, S. Giurgola, P. Vergani, and V. Pruneri, "Widely transparent electrodes based on ultrathin metals," Opt. Lett. 34, 325-327 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-325

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