Abstract
Hybrid transparent electrodes with silver nanowires (AgNWs) and single-walled carbon nanotubes (SWCNTs) were fabricated on plastic films by a low-temperature solution process. The hybrid transparent electrodes exhibited a sheet resistance of 29.2 Ω/sq with a transparency of 80% when 6 wt.% of SWCNTs was mixed with AgNWs. This sheet resistance was less than one-fourth that of the AgNW transparent electrodes that were prepared using the same method. This reduction in sheet resistance is because the SWCNTs formed bridges between the AgNWs, thus, resulting in high conductivity of the hybrid transparent electrodes. The hybrid electrodes formed on plastic films exhibited high conductivity as well as excellent stability in sheet resistance when tested using a repeated bending test.PACS: 62.23.Hj; 61.48.De; 81.15.-z.
Highlights
Flexible transparent electrodes are critical components of flexible electronic devices such as touch screens, organic solar cells, and organic light-emitting diodes (OLEDs)
The AgNW electrodes exhibited a sheet resistance of 132 Ω/sq with a transparency of 80%. This sheet resistance was more than ten times higher than that of the AgNW electrodes heated at 200°C for 20 min (9.2 Ω/sq)
The single-walled carbon nanotubes (SWCNTs) electrodes exhibited a high sheet resistance owing to the semiconducting nanotubes and high contact resistance [4,6,8]
Summary
Flexible transparent electrodes are critical components of flexible electronic devices such as touch screens, organic solar cells, and organic light-emitting diodes (OLEDs). The sheet resistances of SWCNT and graphene transparent electrodes are 100 to 500 Ω/sq with a transparency of 80% to 95% [1,2,6,14]. This value is too high for use with organic solar cells and OLEDs, which require sheet resistances of approximately 10 to 50 Ω/sq [15]. A substantial improvement in the sheet resistance of SWCNT and graphene electrodes is a necessity.
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