| AVS 61st International Symposium & Exhibition | |
| Electronic Materials and Processing | Friday Sessions |
| Session EM+NS+TF-FrM |
| Session: | Transparent Electronics |
| Presenter: | Xi Liu, Carnegie Mellon University |
| Authors: | X. Liu, Carnegie Mellon University L.M. Porter, Carnegie Mellon University M.F. Islam, Carnegie Mellon University |
| Correspondent: | Click to Email |
In this study we report on the fabrication and characterization of ultralight (>99% porosity) aerogels based on single-walled carbon nanotubes (SWCNTs) and poly(ethylene dioxythiophene) : poly(styrene sulfonate) (PEDOT:PSS), that are electrically conducting and highly stretchable. The aerogels were created by critical-point drying of aqueous elastic co-gels of individually dispersed SWCNTs mixed with PEDOT:PSS to yield either free-standing films or thin films supported on flexible (PET) or glass substrates; the nanotubes substantially reduce the percolation threshold of PEDOT:PSS. These transparent conductors with sheet resistance of 35 ohm/sq and 60% transparency (at 550 nm) also proved to be highly flexible – they can be repeatedly stretched to 20% with < 1% change in resistivity. The electrical, optical, mechanical, and microstructural properties of these materials will be presented, along with their application in devices.