Highly conductive and uniform graphene oxide modified PEDOT:PSS electrodes for ITO-Free organic light emitting diodes

Abstract

We have successfully obtained a highly transparent and conductive film by doping poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) with graphene oxide (GO) and sodium dodecyl benzene sulfonate (SDBS).

High Stable, Transparent and Conductive ZnO/Ag/ZnO Nanofilm Electrodes on Rigid/Flexible Substrates

“…The ZnO/Ag/ZnO films deposited on PET substrate has the same sheet resistance trend from 12.57 Ω¨sq´1 (f(O 2 ) = 0) to 8.11 Ω¨sq´1 (f(O 2 ) = 2.0%), then to 11.07 Ω¨sq´1 (f(O 2 ) = 4.0%). Importantly, we obtained a low sheet resistance 8.11 Ω¨sq´1 for ZnO/Ag/ZnO flexible electrodes, which is outstanding in the field of transparent flexible electrodes [25][26][27].…”

“…The ZnO/Ag/ZnO films deposited on PET substrate has the same sheet resistance trend from 12.57 Ω·sq −1 (f(O2) = 0) to 8.11 Ω·sq −1 (f(O2) = 2.0%), then to 11.07 Ω·sq −1 (f(O2) = 4.0%). Importantly, we obtained a low sheet resistance 8.11 Ω·sq −1 for ZnO/Ag/ZnO flexible electrodes, which is outstanding in the field of transparent flexible electrodes [25][26][27]. The figure of merit (Φ TC ) is an important parameter to evaluate the performance of transparent electrodes, which was defined by Haacke as follows [28]:…”

Sensor for volatile organic compounds using an interdigitated gold electrode modified with a nanocomposite made from poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) and ultra-large graphene oxide

“…As shown in Fig. 6, the bright and dark domains are observed in phase images, corresponding to PEDOT-rich grains and PSS-rich grains, respectively [23,27]. The shape of PEDOT-rich grains transforms from a short curved domain to a long stretched network with increasing the amount of UL-GO to 0.04 wt% [27].…”

“…The sensitivity changing behaviors may be attributed to the adsorption and desorption of methanol molecules of the sensing films. This improvement may be resulted in the separation of PEDOT and PSS chains, mainly because the coulombic attraction between PEDOT and PSS was weakened by oxygenated functional groups on UL-GO sheets [23,27]. These covalently bond between PEDOT chains and UL-GO sheets made the conductive network.…”

“…6, the bright and dark domains are observed in phase images, corresponding to PEDOT-rich grains and PSS-rich grains, respectively [23,27]. The shape of PEDOT-rich grains transforms from a short curved domain to a long stretched network with increasing the amount of UL-GO to 0.04 wt% [27]. It means that depletion of insulating PSS and generation of larger contact areas between oriented PEDOT-rich grains by moderate UL-GO can add more conductive pathways for carriers to improve sensitivity of PEDOT-PSS/UL-GO nanocomposite gas sensors.…”