Explanation of the high conductivity of HCl protonated polyaniline films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10436035" target="_blank" >RIV/00216208:11320/21:10436035 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=d_mnlcT_el" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=d_mnlcT_el</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2020.124153" target="_blank" >10.1016/j.matchemphys.2020.124153</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Explanation of the high conductivity of HCl protonated polyaniline films

Popis výsledku v původním jazyce

A very high conductivity of polyaniline (PANI) salts can be achieved but different authors provide different explanations of the conduction mechanism. To clarify the problem, we studied the contribution of each type of charge to the total conductivity. The conductivity (1.9-3.5) S cm(-1) was found using ohmic gold contacts on a PANI sample applied to glass. In contrast, the conductivity of 8.0 x 10(-7) S cm(-1) was determined from the voltampere characteristic measured on the Au/PANI/Si/In structure in a sandwich configuration. The impedance spectra show that in this structure only polarons and holes participate in the charge transfer while ions only cause sample polarization. Conductivity of 3 x 10-7 S cm(-1) caused by ions was determined from the dielectric spectra. Since the sum of all contributions is very low compared to the measured total conductivity, a new mechanism of conductivity is proposed that explains the importance of hydrogen and chlorine molecules for charge transfer.

Název v anglickém jazyce

Explanation of the high conductivity of HCl protonated polyaniline films

Popis výsledku anglicky

A very high conductivity of polyaniline (PANI) salts can be achieved but different authors provide different explanations of the conduction mechanism. To clarify the problem, we studied the contribution of each type of charge to the total conductivity. The conductivity (1.9-3.5) S cm(-1) was found using ohmic gold contacts on a PANI sample applied to glass. In contrast, the conductivity of 8.0 x 10(-7) S cm(-1) was determined from the voltampere characteristic measured on the Au/PANI/Si/In structure in a sandwich configuration. The impedance spectra show that in this structure only polarons and holes participate in the charge transfer while ions only cause sample polarization. Conductivity of 3 x 10-7 S cm(-1) caused by ions was determined from the dielectric spectra. Since the sum of all contributions is very low compared to the measured total conductivity, a new mechanism of conductivity is proposed that explains the importance of hydrogen and chlorine molecules for charge transfer.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

260

Číslo periodika v rámci svazku

Únor

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

124153

Kód UT WoS článku

000620391600006

EID výsledku v databázi Scopus

2-s2.0-85097651574