Effects of poly(ethylene glycol) on electrical conductivity of poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonic acid) film

Stretchable and Highly Conductive Polymer Films

“…RESULTS AND DISCUSSION 3.1 Electrical conductivity Fig.1 shows electrical conductivity of the PEDOT/PSS and PEDOT/PSS/Xyl films containing 20~70 wt% of xylitol heated at 50~200 °C in air for 1 h. It is found that the conductivity significantly increases by adding xylitol and subsequent heating, where the value of the PEDOT/PSS film (2.3 S/cm) increases by two orders of magnitude and attains 114 S/cm for the PEDOT/PSS/Xyl film containing 50 wt% of xylitol after heating at 140 °C. A similar effect has been observed for secondary dopants such as ethylene glycol [23,24], dimethyl sulfoxide [25], glycerol, polyethylene glycol [26], and sorbitol [27], which can be associated with the enhancement of inter particle transport of charge carriers by removal of the insulating PSS-rich layer from the surface of the colloidal particles [7,23,24]. A further increase of the xylitol content, however, lowers the conductivity of the film due to the decrease of relative PEDOT content.…”

Effective Approaches to Improve the Electrical Conductivity of PEDOT:PSS: A Review

“…[93][94][95][96][97][98] PEG is a watersoluble polymer and possesses excellent fi lm forming, emulsifying, and adhesive properties. Wang et al [ 93 ] systematically investigated the effect of PEG with different concentrations and molecular weights on the conductivity of PEDOT:PSS, and found that the conductivity of PEDOT:PSS/PEG hybrid fi lms was enhanced compared to the PEDOT:PSS pristine fi lm. Similar investigations have also been made by Mengistie and colleagues.…”

Transverse charge transport in inkjet printed poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)

“…At moderate fields, (eFL)/(k B T) < 1, the process becomes much more complicated where Nardes et al [11] approximated equation (3) with relation (2). If the nn-H model is applicable [11,16,17], the hopping length, L, is independent of temperature. -13 -Under these circumstances, using the best fit lines of experimental data according to relation (4) at different temperatures [11,36], the hopping distance, L ┴ , in transverse z-conduction was determined as a function of temperature and is presented in Figure 6 (normalized against L ┴ at 300 K).…”