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Laminated Photonic Band Structures with High Conductivity and High Transparency: Metals Under a New Light

The development of a new transparent conductor is based on one-dimensional metal-dielectric photonic band gap structures. Thin-film metal-dielectric filters containing at least 150 nm of silver have been fabricated, with transmittance greater than 50% over the 500-600 nm waveband, and sheet resistance of ~ 0.1 Ω/Square. Theoretical calculations predict 25% transparency levels for structures that contain ~ 1 μm of silver, and transparencies that approach 80% for structures that have in excess of 100 nm of silver. Some applications for transparent, conducting films include antennas embedded in windshields, electrodes on flat panel displays, electromagnetic shielding, and solar window panes, to name a few.

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