The PEDOT:PSS aqueous solution (Clevios™ P VP AI 4083, solid content 1.3–1.7%, PEDOT:PSS weight ratio = 1:6). PEDOT:PSS was dissolved in a mixture of solvents with a weight concentration of 89.82%. The solvent mixture contains 5.98 wt.% of dimethyl sulfoxide (DMSO), 3.99 wt.% of ethylene glycol (EG) and 0.199 wt.% of triton x-100.
To prepare graphene solution, 10 mg of chemically synthesized graphene powder was dispersed in 5 ml of DMSO.
Next, graphene solution was mixed with 40 ml of PEDOT:PSS
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