Fig. 2
Morphology and optoelectronic properties of the Au nanomesh electrodes. a Top-view SEM images showing two examples of the typical morphologies of gold nanomeshes prepared using Au-Cu ultra-thin films with 17 at.% of initial gold content and 5 nm initial thickness with different exposure time: (condition 1) 120 min acidic exposure and (condition 2) 15 min acidic exposure. Scale bar: 200 nm. b Example of two UV-Vis transmission spectra of Au nanomesh electrodes on PET with the different values of sheet resistance; the spectra show relatively flat curves for the entire visible wavelength range. c False-colors SEM image of four terminal electrical conductivity measurement of a single micro-domain and the corresponding I-V curve recorded at room temperature; the yellow and cyan colors represent the gold nanomesh and the platinum electrodes, respectively. d Optical transmission at 550 nm versus sheet resistance of Au nanomesh electrodes on PET prepared with 17 at.% initial gold content and 5 nm initial thickness with different exposure time: 15 min (solid square—condition 2) and 120 min (hollow square—condition 1). For the purpose of comparison, the optoelectronic performances of PEDOT:PSS, carbon nanotubes, graphene, silver nanowires, nanotroughs, copper nanowires, core/shell nanowires, nanofibers, oxide, and other nanomeshes are also included on the graph. – Inspired by reviews2,15 - The full list of references used in this figure is provided in Supporting Information. Note that the transmittance presented in the graph does not include the transmittance of the substrate
