Cargando…

Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives

Spin-coating has been used extensively in the fabrication of electronic devices; however, the effects of the processing parameters have not been fully explored. Here, we systematically characterize the effects of the spin-coating time on the microstructure evolution during semiconducting polymer sol...

Descripción completa

Detalles Bibliográficos
Autores principales: Na, Jin Yeong, Kang, Boseok, Sin, Dong Hun, Cho, Kilwon, Park, Yeong Don
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4547395/
https://www.ncbi.nlm.nih.gov/pubmed/26299676
http://dx.doi.org/10.1038/srep13288
_version_ 1782387064366432256
author Na, Jin Yeong
Kang, Boseok
Sin, Dong Hun
Cho, Kilwon
Park, Yeong Don
author_facet Na, Jin Yeong
Kang, Boseok
Sin, Dong Hun
Cho, Kilwon
Park, Yeong Don
author_sort Na, Jin Yeong
collection PubMed
description Spin-coating has been used extensively in the fabrication of electronic devices; however, the effects of the processing parameters have not been fully explored. Here, we systematically characterize the effects of the spin-coating time on the microstructure evolution during semiconducting polymer solidification in an effort to establish the relationship between this parameter and the performances of the resulting polymer field-effect transistors (FETs). We found that a short spin-coating time of a few seconds dramatically improve the morphology and molecular order in a conjugated polymer thin film because the π-π stacking structures formed by the polymer molecules grow slowly and with a greater degree of order due to the residual solvent present in the wet film. The improved ordering is correlated with improved charge carrier transport in the FETs prepared from these films. We also demonstrated the effects of various processing additives on the resulting FET characteristics as well as on the film drying behavior during spin-coating. The physical properties of the additives are found to affect the film drying process and the resulting device performance.
format Online
Article
Text
id pubmed-4547395
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-45473952015-08-26 Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives Na, Jin Yeong Kang, Boseok Sin, Dong Hun Cho, Kilwon Park, Yeong Don Sci Rep Article Spin-coating has been used extensively in the fabrication of electronic devices; however, the effects of the processing parameters have not been fully explored. Here, we systematically characterize the effects of the spin-coating time on the microstructure evolution during semiconducting polymer solidification in an effort to establish the relationship between this parameter and the performances of the resulting polymer field-effect transistors (FETs). We found that a short spin-coating time of a few seconds dramatically improve the morphology and molecular order in a conjugated polymer thin film because the π-π stacking structures formed by the polymer molecules grow slowly and with a greater degree of order due to the residual solvent present in the wet film. The improved ordering is correlated with improved charge carrier transport in the FETs prepared from these films. We also demonstrated the effects of various processing additives on the resulting FET characteristics as well as on the film drying behavior during spin-coating. The physical properties of the additives are found to affect the film drying process and the resulting device performance. Nature Publishing Group 2015-08-24 /pmc/articles/PMC4547395/ /pubmed/26299676 http://dx.doi.org/10.1038/srep13288 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Na, Jin Yeong
Kang, Boseok
Sin, Dong Hun
Cho, Kilwon
Park, Yeong Don
Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title_full Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title_fullStr Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title_full_unstemmed Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title_short Understanding Solidification of Polythiophene Thin Films during Spin-Coating: Effects of Spin-Coating Time and Processing Additives
title_sort understanding solidification of polythiophene thin films during spin-coating: effects of spin-coating time and processing additives
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4547395/
https://www.ncbi.nlm.nih.gov/pubmed/26299676
http://dx.doi.org/10.1038/srep13288
work_keys_str_mv AT najinyeong understandingsolidificationofpolythiophenethinfilmsduringspincoatingeffectsofspincoatingtimeandprocessingadditives
AT kangboseok understandingsolidificationofpolythiophenethinfilmsduringspincoatingeffectsofspincoatingtimeandprocessingadditives
AT sindonghun understandingsolidificationofpolythiophenethinfilmsduringspincoatingeffectsofspincoatingtimeandprocessingadditives
AT chokilwon understandingsolidificationofpolythiophenethinfilmsduringspincoatingeffectsofspincoatingtimeandprocessingadditives
AT parkyeongdon understandingsolidificationofpolythiophenethinfilmsduringspincoatingeffectsofspincoatingtimeandprocessingadditives