Space charge limited conduction in plasma polymerized N,N,3,5 tetramethylaniline thin films

Akther, H.; Bhuiyan, A.H.

doi:10.1016/j.tsf.2005.04.110

Cited by 18 publications

(13 citation statements)

References 17 publications

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“…3 shows the plot of the Chot function as a function of the bias voltage at 293 K and 56%RH in nitrogen and methane (20 ppm, 10 min). As we can see from the figure, the decrease of the Chot function with increasing applied voltage indicates that the junction primarily controls the current-voltage characteris- tics of the diode [21,22]. Thus, the thermionic emission seems to be the dominant conduction process for the metal-polymer junctions used, as was assumed before.…”

Section: Resultssupporting

confidence: 53%

Influence of methane in the electrical properties of polypyrrole films doped with dodecylbenzene sulfonic acid

Campos

Simões

Pereira

2007

Sensors and Actuators B: Chemical

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Section: Resultssupporting

confidence: 53%

Influence of methane in the electrical properties of polypyrrole films doped with dodecylbenzene sulfonic acid

Campos

Simões

Pereira

2007

Sensors and Actuators B: Chemical

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“…In this case, we obtained the value E t Ϸ 69 meV, which is similar to that obtained previously. These relatively low values of E t and H t are thought to be the reason of the high mobility when compared with those of other amorphous materials, which have values of H t and E t above 10 17 cm −3 and 100 meV, respectively, thereby exhibiting a low FET mobility of less than 10 −6 cm 2 / V s. 19,20 Furthermore, the trap parameters of amorphous PTVTF are comparable to those of crystalline P3HT, which has H t and E t values of 1 -3 ϫ 10 16 cm −3 and 50-54 meV, 14,16 respectively. It has been reported that highly crystalline P3HT films show a low FET mobility-limited by the clearly defined grain boundaries-whereas less crystalline P3HT layers show a higher mobility, which is possibly induced by isotropic nodule structures.…”

Section: Origin Of High Mobility Within An Amorphous Polymeric Semicomentioning

confidence: 94%

Origin of high mobility within an amorphous polymeric semiconductor: Space-charge-limited current and trap distribution

Chung

Lee

Yang

et al. 2008

Applied Physics Letters

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To elucidate the origin of the high field-effect mobility (≈0.02cm2∕Vs) of amorphous poly[(1,2-bis-(2′-thienyl)vinyl-5′,5″-diyl)-alt-(9,9-dioctyldecylfluorene-2,7-diyl], we investigated the current density–voltage (J-V) and mobility–voltage (μ-V) relationships as a function of temperature. By using the power law model and the Gaussian hopping model, we determined a characteristic trap energy of 67meV, an energetic disorder parameter of 64meV, and a total trap density of 2.5×1016cm−3, comparable to that of poly(3-hexylthiophene). We conclude that the relatively low trap density, which originates from the grain-boundary-free amorphous nature of the semiconductor, enables this high field-effect mobility.

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“…It is to be noted that derivatives of aniline and pyrrole are well known organic materials. Different properties of plasma polymerized thin films of these organic materials have been reported by many investigators 2, 7. These two materials are chosen to prepare and to characterize the bilayer thin film because it is usually observed that the bilayer and composite thin films give rise to different properties than the thin films prepared from their component monomers.…”

Section: Introductionmentioning

confidence: 85%

“…Many reports on the investigation of direct current (DC) electrical properties of plasma polymerized thin films have been appeared in the literature. Akther and Bhuiyan2, 3 studied the current density‐voltage (J‐V) characteristics of plasma polymerized N,N, 3,5‐tetramethyaniline (PPTMA) thin films of different thicknesses at different temperatures with aluminum (Al) electrodes and reported that the films showed Ohmic behavior at the lower voltage region and SCLC dominated by exponential trap distribution at the higher voltage region. Kumar et al4 studied the optical and electrical properties of plasma polymerized polypyrrole (PPPy) and iodine‐doped PPPy.…”

Section: Introductionmentioning

confidence: 99%

Direct current electrical characterization of plasma polymerized pyrrole‐N,N,3,5 tetramethylaniline bilayer thin films

Kamal

Bhuiyan

2011

J of Applied Polymer Sci

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The direct current conduction mechanism in plasma polymerized pyrrole‐N,N,3,5 tetramethylaniline (PPPy‐PPTMA) bilayer thin films has been discussed in this article. A parallel plate capacitively coupled glow discharge reactor was used to deposit PPPy, PPTMA, and PPPy‐PPTMA thin films at room temperature onto glass substrates. The Fourier Transform Infrared analyses showed that the PPPy‐PPTMA bilayer thin films contained the structural characteristics of both the PPPy and PPTMA. The current density‐voltage characteristics of PPPy‐PPTMA bilayer thin films of different deposition time‐ratios indicated an increase in electrical conductivity as the proportion of PPTMA was increased in the bilayer films. It is also observed that the conductivity of the bilayer thin film is reduced compared with its component thin films. It is seen that in the low voltage region the current conduction obeys Ohm's law, while the charge transport phenomenon appears to be the space charge limited conduction in the higher voltage region. The mobility of the charges, the free charge carrier density, and the permittivity of the PPPy, PPTMA and PPPy‐PPTMA bilayer thin films have been calculated. The permittivity for PPPy, PPTMA and PPPy‐PPTMA bilayer thin films were found to be 1.07 × 10−10, 2.2 × 10−11, and 1.26 × 10−10 C2 N−1 m−2, respectively; the free charge carrier density were (3.56 ± 0.01) × 1022, 2 × 1021 and (5.19 ± 0.02) × 1022 m−3 respectively; and the mobility of the charges were found to be (4.4 ± 0.01) × 10−19, 1.3 × 10−13 and (2.1 ± 0.01) × 10−19 m2 V−1 s−1 respectively. PACS: 72.80.Le, 73.21.Ac, 73.40.Rw, 73.50.Gr, 73.61.Ph. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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Space charge limited conduction in plasma polymerized N,N,3,5 tetramethylaniline thin films

Cited by 18 publications

References 17 publications

Influence of methane in the electrical properties of polypyrrole films doped with dodecylbenzene sulfonic acid

Influence of methane in the electrical properties of polypyrrole films doped with dodecylbenzene sulfonic acid

Origin of high mobility within an amorphous polymeric semiconductor: Space-charge-limited current and trap distribution

Direct current electrical characterization of plasma polymerized pyrrole‐N,N,3,5 tetramethylaniline bilayer thin films

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