A hybrid material of graphene and poly (3,4-ethyldioxythiophene) with high conductivity, flexibility, and transparency

Abstract

A novel hybrid material prepared from graphene and poly (3,4-ethyldioxythiophene) (PEDOT) shows excellent transparency, electrical conductivity, and good flexibility, together with high thermal stability and is easily processed in both water and organic solvents. Conductivities of the order of 0.2 S / cm and light transmittance of greater than 80% in the 400 1800 nm wavelength range were observed for fi lms with thickness of tens of nm. Practical applications in a variety of optoelectronic devices are thus expected for this transparent and fl exible conducting graphene-based hybrid material.

Graphene/polymer composites for energy applications

“…32 This conductivity is much higher than that of a commercial PEDOT:PSS product (Clevios TM P AI 4083, 10 À6 -10 À5 S cm À1 ). Moreover, when a PMMA sheet coated with this composite was bent inward, it still retained a high electrical conductivity (0.18 S cm À1 ).…”

“…151 The other strategy is bridging graphene sheets with other conducting additives, such as CNTs and CPs. 32,33,69,[152][153][154] A composite film of graphene and CNTs showed an enhanced performance of 636 X/& at T ¼ 92%, which is superior to both single-walled CNT and graphene-based TCEs. 152 Composites of graphene and CPs are also considered to have synergic effects.…”

“…152 Composites of graphene and CPs are also considered to have synergic effects. 32,33,69 CP themselves are also promising materials for developing new TCEs, especially for potential applications in the flexible electronic devices, because of their unique optical, electrical, and mechanical properties. The composite of PEDOT and PSS is the most widely explored CP material for this purpose because of its good processibility, high conductivity, and transparency.…”

“…To date, various graphene composites with insulating or conducting polymers (CPs) have been prepared through noncovalent 22 or covalent approaches. 24 They have also been applied as electrodes for supercapacitors and lithium ion batteries (LIBs), [25][26][27][28][29] counter electrodes of dye-sensitized solar cells (DSSCs), 15,30,31 and transparent conducting electrodes (TCEs) 32,33 or active layers of organic solar cells, 34 catalytic electrodes, and polymer electrolyte membranes of fuel cells. [35][36][37] This review focuses on summarizing the recent advances in the synthesis of graphene/polymer composites and their energy applications.…”

PEDOT: PSS/PEDOT composite film for high performance electrochemical electrode

“…The bonds at 1106 cm -1 and 1209 cm -1 are attributed to the C-O-C bond stretching in the ethylene dioxy group. And the C=C and C-C stretching vibrations of the quininoid structure of the thiophene ring are at 1350 cm -1 and 1627 cm -1 [8]. In curve PEDOT: PSS/PEDOT, in addition to the characteristic peaks of PEDOT, peaks at 1035 and 1185 cm -1 are attributed to PSS [9].…”