Preparation and properties of plasma-polymerized thiophene (PPT) conducting films

Sadhir, R. K.; Schoch, K.F.

doi:10.1016/0040-6090(93)90741-7

Cited by 47 publications

(39 citation statements)

References 10 publications

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“…5 Although the excited plasma species are mainly high-energy electrons that are relatively indiscriminate in rupturing chemical bonds, the substrate can be kept at the ambient temperature. 12 Overall, plasma polymerization is an inexpensive processing route.…”

Section: Introductionmentioning

confidence: 99%

Pulsed‐plasma‐polymerized aniline thin films

Tamirisa

Liddell

Pedrow

et al. 2004

J of Applied Polymer Sci

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An inductively coupled pulsed-plasma reactor was used to synthesize polyaniline thin films on several substrates positioned at various distances from the center of the radio frequency (RF) coil. The samples were characterized with Fourier transform infrared (FTIR), cyclic voltammetry, and microscopic techniques. Impedance spectroscopy was used to determine the electrical characteristics of three-layer structures with polyaniline as the middle layer between top and bottom metal electrodes. FTIR results indicated that the chemical composition and structure of the films were very dependent on the substrate's position with respect to the RF coil, there being considerably less aromatic character closer to the coil. The electrochemical behavior of the films in acidic electrolytes was similar to that of smallmolecule aniline oxidation products; the number of peaks in the cyclic voltammograms varied with the substrate. Scanning electron microscopy indicated that as the films became thicker, they developed nodules atop a somewhat smoother underlayer. Results from transmission electron microscopy and optical birefringence suggested that the films were not completely homogeneous. The impedance measurements were consistent with relatively rough films possibly containing pinholes.

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Section: Introductionmentioning

confidence: 99%

Pulsed‐plasma‐polymerized aniline thin films

Tamirisa

Liddell

Pedrow

et al. 2004

J of Applied Polymer Sci

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“…It is a solvent-free, room temperature process that does not entail the use of chemical oxidants. Through plasma polymerization, ultra-thin films with controllable thicknesses in the nanometer range can easily be formed on surfaces of substrates (17,18). The mechanism of plasma polymerization is attributed to the collisions of the monomer molecules with the electrons generated by the electric discharges, and such reactions are a major source of free radicals and negative ions (19).…”

Section: Introductionmentioning

confidence: 99%

Plasma Polymerization of Aniline on Different Surface Functionalized Substrates

Wang

Neoh

Zhao

et al. 2002

Journal of Colloid and Interface Science

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“…3 Recently, plasma has been used for the preparation of PTh. 4 Plasma-polymerized thiophene conducting films have been prepared away from the high rf flux density region in the reactor. An inert gas (Ar) is passed through the plasma zone and its excited species is used for initiating polymerization.…”

Section: Introductionmentioning

confidence: 99%

“…An inert gas (Ar) is passed through the plasma zone and its excited species is used for initiating polymerization. 4 Semiconductive thin organic polymer films have been prepared by plasma polymerization of 1-benzothiophene. 5 Also, plasma-polymerized thiophene films have been evaluated as passivating layers on GaAs for metal insulator semiconductor (MIS) field-effect transistors.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of plasma-polymerized thiophene films

Bhat

Wavhal

1998

J. Appl. Polym. Sci.

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Plasma polymerization of thiophene was carried out in a tubular reactor using an rf source. Various substrates such as aluminum, glass, and NaCl crystal were used. The rate of deposition attained an equilibrium value of 0.35 g cm Ϫ2 s Ϫ1 . Infrared spectra revealed the formation of polythiophene. The films were found to be highly crosslinked. The electrical conductivity was found to be very low (10 Ϫ15 -10 Ϫ10 S/cm). The mode of electrical conduction was found to be space charge-limited current. SEM studies showed that the films consist of globules, the size of which varied from 1 to 10 depending on the time of deposition. X-ray diffraction studies revealed the films to be highly amorphous.

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Preparation and properties of plasma-polymerized thiophene (PPT) conducting films

Cited by 47 publications

References 10 publications

Pulsed‐plasma‐polymerized aniline thin films

Pulsed‐plasma‐polymerized aniline thin films

Plasma Polymerization of Aniline on Different Surface Functionalized Substrates

Preparation and characterization of plasma-polymerized thiophene films

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