SWCNT loading

Such a combination of semiconducting SWCNTs coated with an ordered P3HT layer is expected to enhance the charge separation and transport in the devices active layer, which is a key towards efficiency enhancement. Electrical characteristics (J and V ) of devices were found to strongly dependent on the SWCNT loading (Figure 5.14c), such that both the... 

The comparison of details NHj sensing properties of drop-coated and AC-DEP-assembled PEDOT/PSS-SWCNTs composite films are shown in Figure 12.21. For the drop-coated composite film, the sensitivity reached highest for 15 mg/mL SWCNT concentration in nanocomposite and then the response of the composite film dropped for 20 mg/mL SWCNT loading. 

Homogeneous CNT-polymer composites show dramatic improvements in electrical conductivity at low percolation threshold 0.005-0.1 wt% for SWCNTs loading. In all cases, the desired properties of host polymers such as lightweight, optical clarity, and low melt viscosities are retained. For example. Figure 10.8 shows the... 

Fig. 19 Influence of pH and SWCNT loadings on the electrical conductivity of thin films of SWCNT/polyaniline composite nanofibers (Reproduced with permission from [78])...

The impact of aspect ratio and alignment of the carbon nanotubes on the nanocomposite conductivity has been studied recently (both experimentally and computationally) by Winey and coworkers [165-167]. In particular, Du et td. [165] demonstrated that in a poly(methyl methacrylate) (PMMA)/single wall carbon nanotube (SWCNT) nanocomposite, conductivity increases as a function of the SWCNT loading as predicted by Eq. (7.10), with a power-law exponent of 2.3 and percolation threshold of 0.39 wt%. Interestingly, the rapid increase in conductivity was accompanied by a rapid increase in the storage modulus, G (Figure 7.17). In fact,... 

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