Abstract
In this study, we demonstrated poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) as a composite with Ag nanowire (Ag NW) to enhance the stretchability of the Ag NW network electrode. The composite Ag NW/PEDOT:PSS hybrid ink (AP ink) was prepared at a ratio of 1 : 10, 1 : 20, and 1 : 30, respectively and bar coated on polyurethane substrate. The different ink ratios were studied and optimized with a sheet resistance of 14.93 Ω sq−1. and a transmittance of 88.6% showing a high performance in mechanical stress tests such as bending, folding, rolling, twisting, and stretching. It also showed a conductive bridge effect where the PEDOT:PSS acted as an anchor or support to Ag NW during mechanical strain and PEDOT:PSS also enhanced the electrical conductivity of the Ag NW. Therefore, to prove the real time performance of the electrode as a wearable device, we fabricated transparent electroluminescence devices and thin film heater devices which are highly flexible and demonstrated excellent performance proving that the AP electrode is more suitable candidate for future wearable transparent devices.
Highlights
With the advancement of transparent electrode technology, innovations based on wearable portable gadgets have gained popularity for their human convenience and light weight
We previously demonstrated that PEDOT:PSS composite with Ag nanowire (Ag NW) can enhance the stretchability of Ag NW electrode with brush painting method.[25]
The electrical property of PEDOT:PSS was weaker than that of Ag NW, Ag NW served as the primary current channel, and PEDOT:PSS served as an auxiliary electrode for stretchability
Summary
With the advancement of transparent electrode technology, innovations based on wearable portable gadgets have gained popularity for their human convenience and light weight. We previously demonstrated that PEDOT:PSS composite with Ag NW can enhance the stretchability of Ag NW electrode with brush painting method.[25] Though the brush painting method is both simple and cost effective, it is hard to control both the thickness and uniformity control for electrode. The performance of the TFH devices was not degraded in the bent or twisted states, it was slightly degraded in the stretched state. These results showed the high potential of the cost-effective and manufactured AP electrode
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