Geometric model of crack-templated networks for transparent conductive films

Crack-templated networks, metallic frameworks fabricated from crack patterns in sacrificial thin films, can exhibit high optical transmittance, high electric conductivity, and a host of other properties attractive for applications. Despite advances in preparing, characterizing, and analyzing optoelectronic performance of cracked template networks, limited efforts have focused on predicting how their disordered structures help to determine their electrical and optical properties and explain their interrelationships. We introduce a geometric modeling approach for crack-templated networks and use simulation to compute their wavelength- and incident angle-dependent optical transmittance and sheet resistivity. We explore how these properties relate to one another and to those of metallic meshes with periodically ordered aperture arrays. We consider implications of the results for optoelectronic applications, compare figure-of-merit predictions to experimental data, and highlight an opportunity to extend the modeling approach using inverse methods. Published under an exclusive license by AIP Publishing.

Automated summary

This study investigates the electrical and optical properties of crack-templated networks and compares them with metallic meshes with periodically ordered aperture arrays. A geometric modeling approach is introduced, and simulation is used to compute their wavelength- and incident angle-dependent optical transmittance and sheet resistivity.