Mobility of holes and polarons in polyaniline films assessed by frequency-dependent impedance and charge extraction by linearly increasing voltage

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00481326" target="_blank" >RIV/61389013:_____/17:00481326 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10366738
Result on the web
<a href="http://dx.doi.org/10.1016/j.synthmet.2017.10.015" target="_blank" >http://dx.doi.org/10.1016/j.synthmet.2017.10.015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.synthmet.2017.10.015" target="_blank" >10.1016/j.synthmet.2017.10.015</a>

Result language
angličtina
Original language name
Mobility of holes and polarons in polyaniline films assessed by frequency-dependent impedance and charge extraction by linearly increasing voltage
Original language description
Thin films of semiconducting polyaniline hydrochloride were deposited on glass or silicon substrates. Frequency spectra of impedance measured at several voltages display regions of holes and polarons contributions and enable to evaluate their mobility 2.7 × 10-5 cm2 V-1 s-1 at the electric field of 1 × 105 V cm-1. Good agreement of the average value 2.4 × 10-5 cm2 V-1 s-1 of holes mobility was obtained by another method-charge extraction by linearly increasing voltage (CELIV). A Poole-Frenkel type of electric field dependence of mobility assessed by frequency- dependent impedance points to trapping of the charge carriers. From the value of the work function measured by the Kelvin probe and from the position of HOMO level, the hole concentration 2.9 × 1018 cm-3 was obtained. Using this concentration together with the mobility measured by the impedance spectroscopy and the CELIV method, the conductivity 1.2 × 10-5 S cm-1 carried by holes was estimated. Our results widen the work dealing with the mixed electron and proton conductivity of polyaniline films in aqueous solution of acids published in the literature.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science

Project
<a href="/en/project/GA16-02787S" target="_blank" >GA16-02787S: Conducting polymer cryogels</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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