Novel organic materials that permanently increase conductivity upon thermal or photo treatment

    Authors

    R. H. Tian; Z. Shi;Y. Liao

    Comments

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    Abbreviated Journal Title

    Org. Electron.

    Keywords

    Organic conducting material; Thermo-responsive; Photo-responsive; Permanent conductivity increase; THIN-FILM TRANSISTORS; PENTACENE PRECURSOR; POLYACETYLENE; DERIVATIVES; POLYMERS; PATTERNS; Materials Science, Multidisciplinary; Physics, Applied

    Abstract

    In this work. we tested an approach towards novel organic materials that can permanently increase conductivity upon thermal or photo treatment, and potentially, change from insulator to conductor or semiconductor. Using dichlorodicyanoquinone (DDQ) doped thermo and photo responsive pentacene precursors as model systems, we found that conductivity of the thermal responsive material increased over 2 orders of magnitude to 10(-3)-10(-2) S/cm after thermal treatment, while that of a photo responsive material did not significantly increase after photo irradiation even though the composites are same. Based on the results of conductivity measurement, SEM, XRD, UV-Vis, and Fr-IR, the phenomena are attributed to that the crystalline morphology of thermally generated pentacene/DDQ thin films favored charge transfer while the amorphous morphology of the photo generated material favored solid-state Diels-Alder reaction. The result implies that the mechanism of solid-state reaction can be altered by controlling morphology. (C) 2008 Elsevier B.V. All rights reserved..

    Journal Title

    Organic Electronics

    Volume

    10

    Issue/Number

    2

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    368

    Last Page

    371

    WOS Identifier

    WOS:000264269600023

    ISSN

    1566-1199

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