Study of the Nanostructure Effect on Polyalkylthiophene Derivatives Films Using Impedance Spectroscopy
| Title: | Study of the Nanostructure Effect on Polyalkylthiophene Derivatives Films Using Impedance Spectroscopy |
|---|---|
| Authors: | Lucas Vinicius de Lima Citolino, Maria Luisa Braunger, Vinícius Jessé Rodrigues Oliveira, Clarissa A. Olivati |
| Source: | Materials Research, Vol 20, Iss 4, Pp 874-881 (2017) |
| Publisher Information: | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2017. |
| Publication Year: | 2017 |
| Collection: | LCC:Materials of engineering and construction. Mechanics of materials |
| Subject Terms: | polythiophene, nanostructured film, impedance spectroscopy, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| More Details: | In this paper, devices fabricated with a diode-like structure (electrode/polymer/electrode) from spin-coated and nanostructured (Langmuir-Schaefer) films of polythiophene derivatives were characterized by impedance spectroscopy and studied by theoretical fitting to reach a better understanding of the physical processes in the devices. The materials used for this research were the polyalkylthiophene (P3AT) derivatives poly(3-butylthiophene) (P3BT), poly(3-hexylthiophene) (P3HT), poly(3-octylthiophene) (P3OT) and poly(3-decylthiophene) (P3DT). Electrical measurements were performed from 1 Hz to 1 MHz (100 mV ac) while increasing the dc bias in the range from 0 to 2.5 V. The fittings of the experimental results were performed using equivalent circuits. By plotting the theoretical and experimental spectra on a single graph, it was possible to obtain information related to the film morphology, interfacial effects, resistance, capacitance and conductivity of the polymer, thereby enhancing the understanding of this particular type of device. Among the P3AT films, those grown by the Langmuir-Schaefer technique showed higher electrical conductivity, with the only exception being that of P3BT. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1516-1439 1980-5373 |
| Relation: | http://www.scielo.br/pdf/mr/v20n4/1516-1439-mr-1980-5373-MR-2016-0670.pdf; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000400874&tlng=en; https://doaj.org/toc/1516-1439 |
| DOI: | 10.1590/1980-5373-mr-2016-0670 |
| Access URL: | https://doaj.org/article/8767dfa6fb124177bb576a8e9e200967 |
| Accession Number: | edsdoj.8767dfa6fb124177bb576a8e9e200967 |
| Database: | Directory of Open Access Journals |
| ISSN: | 15161439 19805373 |
|---|---|
| DOI: | 10.1590/1980-5373-mr-2016-0670 |
| Published in: | Materials Research |
| Language: | English |