Structural effect on the resistive switching behavior of triphenylamine-based poly(azomethine)s

Zhang, Wenbing; Wang, Cheng; Liu, Gang; Wang, Jun; Chen, Yu; Li, Run-Wei

doi:10.1039/c4cc05233a

Cited by 55 publications

(38 citation statements)

References 34 publications

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“…[1][2][3][4][5][6][7][8][9][10] The electrical switching behaviors (i.e. resistance changes) are mainly controlled by the organic active materials in the two-terminated memory cell.…”

Section: Solution Processable Star-shaped Donor-acceptor (D-a) Conjugmentioning

confidence: 99%

Well-defined star-shaped donor–acceptor conjugated molecules for organic resistive memory devices

Zhang

et al. 2015

Chem. Commun.

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Solution processable star-shaped donor-acceptor (D-A) conjugated molecules (TPA-T-NI and TPA-3T-NI) with an electron-donating triphenylamine (TPA) core, three thienylene or terthienylene spacers, and three 1.8-naphthalimide (NI) electron-withdrawing end-groups are explored for the first time as charge storage materials for resistor-type memory devices owing to the efficient electric charge transfer and trapping.

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“…[1][2][3][4][5][6][7][8][9][10] The electrical switching behaviors (i.e. resistance changes) are mainly controlled by the organic active materials in the two-terminated memory cell.…”

Section: Solution Processable Star-shaped Donor-acceptor (D-a) Conjugmentioning

confidence: 99%

Well-defined star-shaped donor–acceptor conjugated molecules for organic resistive memory devices

Zhang

et al. 2015

Chem. Commun.

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“…[11] Polyazomethines are known to be π-conjugated polymeric materials, exhibiting good mechanical properties, high chemical resistance, high thermal stability, attractive fluorescence properties and either thermotropic or lyotropic LC behaviour. [12][13][14] They have been investigated by different methods, [12][13][14][15][16][17][18][19][20][21][22] also for their potential application in optoelectronics and non-linear optics [12][13][14][15][16][17][18][19][20] and as fluorimetric sensors. [21,22] Surprisingly, we found only two reports [7,9] on dielectric properties and two reports [16,23] on the dielectric current (DC) conductivity of polyazomethines.…”

Section: Introductionmentioning

confidence: 99%

Polyazomethine with m-tolylazo side groups: thermal, dielectric and conductive behaviour

et al. 2015

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2015): Polyazomethine with mtolylazo side groups: thermal, dielectric and conductive behaviour, Liquid Crystals, Using solution polycondensation, a new polyazomethine with m-tolylazo side groups (PAz) exhibiting thermotropic liquid crystalline phase was synthesised and its chemical structure was characterised with generally accepted methods. Its phase transition temperatures were detected with both polarising optical microscopy and differential scanning calorimetry. Using dielectric spectroscopy method, both real and imaginary parts of the permittivity were investigated in wide regions of temperature (from −100°C to 170°C) and frequency (from 1 Hz to 1 MHz). Analysis of frequency dependent permittivity allowed finding three relaxations (α, β 1 and β 2 ) in PAz. β-relaxations were described with the Arrhenius equation, whereas α-relaxation was described with the Vogel-Fulcher-Tammann equation. The alternating current conductivity (ACC) of PAz was studied in the same regions of temperature and frequency. The frequency dependent ACC was described with an exponent power equation. Presentation of ACC as a function of inverse temperature allowed us to describe ACC with the Arrhenius equation.

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“…Additionally, the slight reflectance band near 500 nm for the AST series is another indicator of plasmonic absorption. The highest efficiency reaching 7.8% was obtained at 100 mW/cm 2 for the AST2 cell, which is among the highest values observed for the N719-based ssDSSCs [28][29][30][38][39][40][41][42][43][44][45] and is 1.8-fold greater than that of the commercially-available TiO 2 . 4b.…”

Section: Resultsmentioning

confidence: 99%

A triple-layered, hierarchical 1D core–shell nanostructure with a plasmonic Ag octahedral core for use in solid-state dye-sensitized solar cells

et al. 2015

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A triple-layered, core-shell nanostructure is prepared with a Ag octahedra, SnO2 nanotube (SNT), and TiO2 nanosheet (TNS) via a combined process of electrospinning and solvothermal reaction. In particular, a facile one-step synthesis process for Ag octahera nanocrystals is suggested. The Ag@SNT@TNS hetero-nanostructure is uniformly distributed in organized TiO2 film derived with poly(vinyl chloride)graft-poly(oxyethylene methacrylate) (PVC-g-POEM) graft copolymer and hydrophilically-pretreated TiO2 nanocrystals. The efficiency of the solid-state dye-sensitized solar cells (ssDSSCs) fabricated with this hetero-nanostructure reaches 7.8% at 100 mW cm -2 , which is much greater than that of cells without a hetero-nanostructure (5.2%) or that prepared with commercially-available Dyesol paste (4.4%). This higher efficiency is attributed to the one-dimensional (1D) tubular structure, the improved surface area, and the plasmonic effect of Ag octahedra nanocrystals, resulting in enhanced short-circuit current density (Jsc), as confirmed by the incident photon-to-current efficiency (IPCE), electrochemical impedance spectroscopy (EIS), and intensity modulated photocurrent/voltage spectroscopy (IMPS/IMVS).

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Structural effect on the resistive switching behavior of triphenylamine-based poly(azomethine)s

Cited by 55 publications

References 34 publications

Well-defined star-shaped donor–acceptor conjugated molecules for organic resistive memory devices

Well-defined star-shaped donor–acceptor conjugated molecules for organic resistive memory devices

Polyazomethine with m-tolylazo side groups: thermal, dielectric and conductive behaviour

A triple-layered, hierarchical 1D core–shell nanostructure with a plasmonic Ag octahedral core for use in solid-state dye-sensitized solar cells

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