Patterned Organic and Inorganic Composites for Electronic Applications

Abstract

Carbon nanotube (CNT) and polymer composite materials were obtained using two manufacturing processes. The first method is dispersion of CNT in a solvent-doped poly(ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) solution. The composite retains high optical properties because of the polymeric system and shows improved electrical properties. The second method is in situ polymerization of ethylenedioxythiophene (EDOT) in the presence of CNT. This procedure assures a uniform CNT distribution in a highly conductive p-EDOT layer with reduced optical transmittance. The composites were analyzed for optical transmittance, surface energy, polarity, distribution, and resistivity, and then they were used as an anodic layer in organic light-emitting diode (OLED) manufacturing. The device performances were characterized and compared to that of conventional devices with an indium tin oxide anode. p-EDOT composite layers have shown conductivity and optical transmittance suitable to produce an OLED with a 10 cd/A efficiency.

The structure and electrochemical properties of poly(3,4-propylenedioxythiophene)/SnO2nanocomposites synthesized by mechanochemical route

“…According to the previous reports, the synthesized polymers are in partially doped state during the FeCl 3 oxidative polymerization of polythiophene, and the FeCl 4 − ion is the most probably the counter anion for the FeCl 3 doped polymer . Furthermore, all nanocomposites from both methods also displayed rather broad peak at 2θ = 24°, revealing small degree of crystallinity but amorphous structure of PProDOT, and it is similar to some other polythiophene derivatives .…”

Poly(3,4‐Propylenedioxythiophene) Capsulated Yolk–Shell Carbon Spheres for High‐Performance Electrochemical Capacitors

“…The XRD pattern of pure PProDOT displays two weak and broad diffraction peaks approximately at about 2h 5 248 and 2h 5 438. And the intensity of the peaks at 2h 5 248 is little higher than that of the peaks at 2h 5 438, indicates the lower crystallinity with amorphous structure, which similar to that of other polythiophene derivatives [49]. The diffraction peaks at 2h 5 248 result from the contribution of the intermolecular chain planar stacking [50].…”

Rheological behaviors and electrical conductivity of long-chain branched polypropylene/carbon black composites with different methods

“…Conductive polymer composites have aroused great interest in material development especially for applications as electronics [1][2][3], automotive engineering, sensors [4][5][6][7] and energy storage devices [8]. For that purpose, conductive particles such as carbon black is added into an insulating polymer matrix.…”