Electrical conductivity studies on carbazole thin films

Sreejith, K.; Menon, C. S.; Sudarsanakumar, C.

doi:10.1016/j.vacuum.2008.03.028

Cited by 13 publications

(11 citation statements)

References 23 publications

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“…The value of E derived from the slope of the log DC versus 1/T graph, respectively was determined and listed in Table 3. The obtained value of E is in agreement with that obtained by Pisharady Sreejith et al [30]. The temperature dependence of conductivity is originating from quasi one-, two-or three-dimensional variable range hopping (VRH) across the barriers [31,32] in a Coulomb gap [33].…”

Section: Electrical Characteristics Of Sccsupporting

confidence: 89%

“…Recently, Altındal et al [35] have shown the applicability of Mott's VRH model in 3-dimensions for spin coated phthalocyanine films. One-dimensional variable range hopping (VRH) was successful for the thermally evaporated carbazol [30], several polymers [36] and nanocrystalline oxazine films [37].…”

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

“…8(c) and listed in Table 3. The hopping energy W and the average hopping distance R are given by the following equations [30].…”

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

“…Taking the value of 0.5 nm for [30], the values of hopping energy and the average hopping distance are determined and collected in Table 3.…”

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

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Electrical conductivity, dielectric properties and optical absorption of organic based nanocrystalline sodium copper chlorophyllin for photodiode application

Farag

Mansour

Ammar

et al. 2012

Journal of Alloys and Compounds

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Section: Electrical Characteristics Of Sccsupporting

confidence: 89%

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

“…8(c) and listed in Table 3. The hopping energy W and the average hopping distance R are given by the following equations [30].…”

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

“…Taking the value of 0.5 nm for [30], the values of hopping energy and the average hopping distance are determined and collected in Table 3.…”

Section: Electrical Characteristics Of Sccmentioning

confidence: 99%

See 2 more Smart Citations

Electrical conductivity, dielectric properties and optical absorption of organic based nanocrystalline sodium copper chlorophyllin for photodiode application

Farag

Mansour

Ammar

et al. 2012

Journal of Alloys and Compounds

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“…Almost linear conductivity-frequency dependence in the case of PAZ and PAZ-Cu is an indication for hopping type conduction. [56] However, conductivity values so determined are situated at the bottom of the semiconductor field.…”

Section: Dielectric Measurementsmentioning

confidence: 99%

A silicon-containing polyazomethine and derived metal complexes: synthesis, characterization, and evaluation of the properties

Zaltariov¹,

Cazacu²,

Shova³

et al. 2014

Designed Monomers and Polymers

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A new dialdehyde-containing silicon was prepared by a reaction of Williamson-type and structurally characterized. By its subsequent condensation with 2,5-bis(p-aminophenyl)-1,3,4-oxadiazole, a multifunctional polyazomethine-containing imine, phenylene, oxadiazole, ether, and carbosilane groups within the chain was prepared. The complexes of this polymer with Co(II), Cu(II), and Zn(II) ions formed on the basis of electron-donor ability of the oxadiazole and azomethine groups were prepared in a one-step approach by mixing the two precursors of polyazomethine (dialdehyde and diamine) with corresponding metal salt. The ligand and metal complexes were characterized by spectral (Fourier transform infrared (FTIR), 1 H, and 13 C NMR) methods. The thermal, optical, electrochemical, and dielectric properties were studied and the effects of the metal insertion in dependence on its nature over these properties were evaluated. All compounds are soluble in common organic solvents and show low glass transitions due to the flexible ether and Si-C bonds, are fluorescent, mainly due to the oxadiazole ring, are redox active and have high dielectric constant due to the presence of oxadiazole, azomethine metal units.

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Insulating polyimide films containing n‐type perylenediimide moieties

Damaceanu¹,

Rusu²,

Musteata³

et al. 2012

Polymer International

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Oxadiazole‐containing polyperyleneimides were prepared by high‐temperature solution polycondensation reaction of an aromatic diamino‐oxadiazole with a mixture of two dianhydrides, one containing a perylene moiety and the other containing a hexafluoroisopropylidene unit. Flexible films having good mechanical properties were made therefrom. The structure of the polymer films was confirmed using X‐ray photoelectron spectroscopy. Some polymer films were subjected to measurements of electrical insulating properties. The variation of the real and imaginary parts of the dielectric permittivity with frequency and temperature was recorded. The values of the dielectric constant, dielectric loss and specific resistance were obtained at 25 °C and in the frequency domain from 1 Hz to 130 kHz. The dielectric spectroscopy data showed distinct γ and β subglass transitions for these polymers at low activation energies. Electronic conduction through a hopping mechanism in these polyimide films was determined from AC conductivity measurements. Copyright © 2012 Society of Chemical Industry

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Electrical conductivity studies on carbazole thin films

Cited by 13 publications

References 23 publications

Electrical conductivity, dielectric properties and optical absorption of organic based nanocrystalline sodium copper chlorophyllin for photodiode application

Electrical conductivity, dielectric properties and optical absorption of organic based nanocrystalline sodium copper chlorophyllin for photodiode application

A silicon-containing polyazomethine and derived metal complexes: synthesis, characterization, and evaluation of the properties

Insulating polyimide films containing n‐type perylenediimide moieties

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