Double-resonator structure based on continuous silver thin films for transparent conductors
(English)Article in journal, Letter (Other academic) Submitted
A type of metal-dielectric multilayered structures is investigated theoretically and experimentally for achieving relatively wide-band transparency at visible frequencies with high electrical conductivity. The proposed structure comprises of two coupled metal-dielectric-metal planar optical resonators with metal layer thicknesses near to its skin depth. Simulations show that the maximum transmittance for visible light can easily reach 90% for silver-based structures. Experimentally we demonstrate such a sample that exhibits a transmission window with a bandwidth of 150nm and a maximum transmittance of 76% around 643nm wavelength at normal incidence. Its sheet resistance is measured to be less than 10Ω/☐, much smaller than that of common indium-tin-oxide films. Owing to their simple fabrication procedure as well as design flexibility, such a layered structure can serve as a compelling alternative as transparent conductors for optoelectronic devices, especially for liquid-crystal displays and light-emitting diodes.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-145021OAI: oai:DiVA.org:kth-145021DiVA: diva2:715767
QS 20142014-05-062014-05-062014-05-16Bibliographically approved