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  • 1
    Electronic Resource
    Electronic Resource
    HEATS OF FORMATION OF THE DOUBLE LAYERS AT THE GRAPHON-HEXANOIC ACID SOLUTION INTERFACE (1963)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 67 (1963), S. 2112-2113 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100804a034
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  • 2
    Electronic Resource
    Electronic Resource
    Three-dimensional ordering, spin excitations, and dilution effects in the quasi-1D ferromagnetic (DMeFc)(TCNE) : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5953-5955 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The linear chain S =1/2 molecular ferromagnet decamethylferrocenium tetracyanoethanide [(DMeFc)(TCNE)] has been studied by frequency-dependent ac susceptibility experiments. χ'(T) and χ‘(T) exhibit maxima in the temperature range of 4.8–4.9 K, which corresponds to the transition temperature to the three-dimensional (3D) ferromagnetic ground state. The 3D ordering is due to the presence of a finite interchain ferromagnetic interaction, as determined earlier by dc magnetic susceptibility and specific heat experiments. The results of ac susceptibility measurements below Tc are analyzed in terms of a Debye-like model to investigate the presence of gaps in the spin excitation spectrum of the system. Considerable changes are observed in the critical temperature on introducing spinless sites into the system. The transition temperature of the dilution series (DMeFc)x(DMeCo)1−x(TCNE), where (DMeCo)+=(decamethylcobaltocenium+) has spin S=0, decreases with increasing (1−x).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347827
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  • 3
    Electronic Resource
    Electronic Resource
    Electronic defect studies of ladder-type polymers (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 3021-3027 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electrically active defects have a profound impact on the semiconducting properties of conjugated polymer systems. Defect-induced thermally stimulated current (TSC) in poly (benzimadazobenzophenanthroline), a ladder-type, high-temperature conjugated polymer, is studied in detail. The TSC results identify the nature and the energetics of the trap levels in the polymer. Variations in the results as a function of the initial trap-filling parameters and the thermal history were also observed. The long-lived component in the photoinduced current decay, an indicator of defect states, is also studied within this context. The barrier limiting processes of the photocurrent are correlated with the results obtained from TSC measurements and we speculate on the origin of these defects. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1445279
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  • 4
    Electronic Resource
    Electronic Resource
    Steady-state photoconductivity in poly(2,5-dimethoxy-p-phenylene vinylene) (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 1935-1938 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a study of the steady-state photoconducting properties in the conjugated polymer poly(2,5-dimethoxy-p-phenylene vinylene) using the sandwich and surface cell configurations. The photocurrent spectral response in both the configurations is nearly identical with the onset of the photocurrent around the band edge. The rise in the photocurrent is more gradual than the increase in absorption with respect to the photon energy and the peaks in the photocurrent responses are separated from the absorption maxima by nearly 1 eV. The chopper frequency, electric field, and the intensity dependence of the photocurrent are remarkably different for the two configurations. We speculate on the mechanisms leading to such differences. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361083
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  • 5
    Electronic Resource
    Electronic Resource
    Photoconducting properties of a ladder polymer (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 3938-3941 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The electronic properties of the ladder polymer BBL are investigated using steady state and transient photoconductivity techniques. The photocurrent response of the polymer film in the surface cell and sandwich cell configurations are compared along with the absorption spectra and the results correlated with the surface and bulk morphology. The steady state photocurrent shows a nonlinear response with respect to the electric field, and the photocurrent spectral response is accompanied by a significant tailing in the infrared region. The photocurrent is also studied as a function of photon intensity and chopper frequency. A long lived transient photocurrent ((approximately-greater-than)100 ms) is present on exposure to nanosecond laser pulses revealing the presence of deep traps. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358574
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  • 6
    Electronic Resource
    Electronic Resource
    Sizable photocurrent and emission from solid state devices based on CdS nanoparticles (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1335-1337 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: CdS nanoparticles exhibit size dependent optical and electrical properties. We report here the photocurrent and I–V characteristic studies of CdS nanoparticle devices. A sizable short circuit photocurrent was observed in the detection range governed by the size of the clusters. We speculate on the mechanisms leading to the photocurrent and emission in these nanometer scale systems. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.120986
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  • 7
    Electronic Resource
    Electronic Resource
    Dual function hybrid polymer-nanoparticle devices (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 871-873 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Dual properties of photoconduction and electroluminescence (EL) in hybrid devices consisting of a nanocluster semiconductor layer and a polymer are reported. It is observed that the photocurrent spectral response and efficiency in these multilayer devices are similar to that of the semiconductor component, while the EL spectral responses are closer to that of the polymer layer. The results are confirmed using the nanoparticle semiconductor, cadmium sulphide CdS, of different particle sizes and polymers representing a wide spectral range. A general feature of efficient photocurrent spectral response corresponding to nanoparticle and an appreciable EL response corresponding more to the active polymer are observed in all devices and results in wide, separated spectral windows. Current–voltage responses also indicate possibilities of added tunability in these devices. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123394
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  • 8
    Electronic Resource
    Electronic Resource
    Nanocrystalline titanium dioxide-dispersed semiconducting polymer photodetectors (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 3456-3458 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Photodetection properties of nanocrystalline titanium dioxide, TiO2, dispersed in poly-2-methoxy-5-(2′-ethyl-hexoxy)-1,4 paraphenylenevinylene MEHPPV are studied. Responsivity as high as 50 mA/W is observed in the single-layered composite device. The spectral response is sensitive to the magnitude of the bias in the low-voltage range and the crossover from a symbatic to antibatic response is closely followed. At higher reverse bias, the response is relatively uniform throughout the entire spectral range. Differences in the switching response in the forward bias and reverse bias are observed with a pronounced effect of the persistence photocurrent in the forward bias. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124126
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  • 9
    Electronic Resource
    Electronic Resource
    Photocurrent studies of an active polymer layer in a resonant microcavity (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 1213-1215 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A microcavity enhanced photodiode, consisting of an active semiconducting-polymer layer is studied in detail. The photodiode spectral response indicates features which specifically arise from the cavity geometry factors, as expected from the simulation of the optical-field pattern within the cavity. The results indicate the tuning of photodetection energy range far below the band gap of semiconducting polymer along with sizable gain and speed. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1448171
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  • 10
    Electronic Resource
    Electronic Resource
    Light responsive polymer field-effect transistor (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 1891-1893 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the effect of light incident on a polymer-based field-effect transistor and demonstrate the utility of light as an additional controlling parameter of the transistor state. The transistor exhibits large photosensitivity indicated by the sizable changes in the drain–source current at low levels of light. The response here is considerably higher than that from existing organic/polymeric planar, two-terminal photodetectors due to an additional process contributing to the enhancement. The light-responsive polymer transistor opens up a device-architecture concept for polymer-based electronics. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1404131
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