Electronic properties of polyindole and polycarbazole Schottky diodes

Abthagir, P. Syed; Saraswathi, R.

doi:10.1016/j.orgel.2004.10.002

Cited by 74 publications

(38 citation statements)

References 45 publications

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“…20% EE was measured to be 7.5 Â 10 )3 S cm )1 , being one order of magnitude higher than values reported previously (5.0 Â 10 )4 S cm )1 [21,22] and 8.8 Â 10 )4 S cm )1 [24]). To the best of our knowledge, this is the highest conductivity value of PCZ films that has been reported.…”

Section: Conductivity and Morphologycontrasting

confidence: 56%

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Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether

Nie

Zhang

et al. 2006

J Appl Electrochem

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High-quality polycarbazole (PCZ) films were synthesized electrochemically by direct oxidation of carbazole in boron trifluoride diethyl etherate (BFEE) containing vol. 20% ethyl ether (EE). The oxidation potential of carbazole in this medium was measured to be only 0.90 V vs. SCE, which was lower than that determined in acetonitrile containing 0.1 mol l )1 Bu 4 NBF 4 (1.35 V vs. SCE). PCZ films obtained from this medium showed better electrochemical behavior, better thermal stability with conductivity of 7.5 Â 10 )3 S cm )1 being one order of magnitude higher than those reported previously, indicating that BFEE/EE was a better medium than acetonitrile for the electrosyntheses of PCZ films. As-formed PCZ films can be partly dissolved in acetone, acetonitrile and tetrahydrofuran. Spectral analysis provided evidence for the existence of the conjugated structure of the PCZ chain. Fluorescent spectra indicate that electrosynthesized PCZ is an ideal blue light emitter.

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Section: Conductivity and Morphologycontrasting

confidence: 56%

“…Many statements of the structure and polymerization mechanism of PCZ are translated from polypyrrole or polyindole studies. Therefore, extensive work has been devoted to the study of PCZ in the past several years [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether

Nie

Zhang

et al. 2006

J Appl Electrochem

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“…where A is the effective area of the diode, A* is the effective Richardson constant which depends on the effective mass of carriers (120 Acm -2 K -2 for free electron) [24,25], n is the idealite factor and U Bo is zero bias barrier height. For values of V greater than 3kT = q , the ideality factor can be determined from the slope of the linear region forward bias ln I-V plot by using following relation,…”

Section: Resultsmentioning

confidence: 99%

Electrical characterization of Al/PTF/PEDOT:PSS/ITO heterojunction structure

Çavuş

2015

J Mater Sci: Mater Electron

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We have investigated electrical properties of Al/PTF/PEDOT:PSS/ITO heterojunction structure at room temperature. Firstly, optical properties of the polymer [poly(pentachlorophenyl methacrylate)] were determined from ultraviolet-visible absorption spectra in the wavelength range of 200 to 700 nm. Optical band gap (E g ) of the polymer was found about 4.70 eV. Secondly, the PED-OT:PSS and polymer thin film (PTF) were prepared on the ITO substrate. The current transport mechanism and electrical parameters of Al/PTF/PEDOT:PSS/ITO heterojunction structure were investigated using current-voltage (I-V) characteristics.

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“…Namely, many devices using the polymeric [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] and nonpolymeric organic materials [17][18][19][20][21][22][23][24][25][26][27][28][29] have been fabricated including light emitting diodes and Schottky (Metal/Semiconductor = MS) type devices like an inorganic semiconductor/ organic semiconductor material or a metal/organic semiconductor material, and their electrical and photoelectrical properties have been investigated for more than three decades.…”

Section: Introductionmentioning

confidence: 99%