Characteristics and field emission of conducting poly (3,4-ethylenedioxythiophene) nanowires

Abstract

Conducting poly (3,4-ethylenedioxythiophene) nanowires were synthesized by using an electrochemical polymerization method with a nanoporous template. Scanning and transmission electron microscopy confirmed the formation of conducting polymer nanowires (CPNWs) with an open end. The formation and the electrical properties of the CPNWs formed were dependent on synthetic conditions, such as the doping level, the polymerization time, and the applied current. The measured electrical conductivity of a single strand of CPNW was ∼3.4×10−3 S/cm at room temperature. From the ultraviolet and visible absorbance spectra, we observed a π–π* transition at ∼2.1 eV for the de-doped systems. A field emission cell of CPNW nanotips was fabricated. The turn-on field of the CPNWs was 3.5∼4 V/μm at 10 μA/cm2, and the current density increased up to 100 μA/cm2 at ∼4.5 V/μm. The field enhancement factor of CPNW nanotips was ∼1200, which is comparable to those of carbon nanotubes.

Controllable synthesis of leaflet-like poly (3,4-ethylenedioxythiophene)/single-walled carbon nanotube composites with microwave absorbing property

“…http Conducting polymers combined with SWCNTs are quite promising for using as lightweight microwave absorbers. One of the most famous conducting polymers, poly (3,4-ethylenedioxythiophene) (PEDOT), is an appealing candidate to combine with SWCNT due to its high conductivity, low density and excellent electrochemical stability, which could be resistant to the corrosion as well as be favorable for the practical application in comparison to the metallic particles [11,[21][22][23][24]. Moreover, the easy processibility of PEDOT allows to be designed for various nanostructures of the composites via numerous strategies [25].…”

Metallocene-containing conjugated polymers

“…in electronic and optoelectronic devices, photovoltaic solar cells, nanocomposite and hybrid solar cells, energy storage and conversion devices (batteries, fuel cells and supercapacitors, rechargeable batteries, fuel cells), electrocatalysis, sensors, membranes, biomaterials [246,247], such systems may represent a source of nanostructured conjugated polymers, e.g. nanowires for field-emission cells [248].…”

Facile synthesis of cadmium sulphide-polyaniline (CdS-PANI) nanocomposite and its field emission investigations

“…The authors have observed threshold field of 5-6 V/μm corresponding to emission current density of 0.01 mA/cm 2 . Field emission studies on poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires, doped and de-doped polypyrrole, PANI and PEDOT nanotubes and nanowires have been reported by Kim and his group [11,12]. Li et al have reported field emission characteristics of aniline and pyrrole copolymer nanofibers [13].…”

“…Since the 1-D nanostructures, owing to their high aspect ratio, offer unique advantages for their practical application as field emitters, attempts have been made to synthesize conducting polymers in 1-D nanometric form and study their field emission (FE) characteristics. Followed by the first report on FE properties of poly(3-octythiophene) by Musa et al, various research groups have carried out FE investigations of different conducting polymers and nanocomposites [9][10][11][12][13][14][15][16][17][18][19][20]. Wang et al have synthesized polyaniline (PANI) nanofibril array using AAO template and reported FE behaviour [10].…”