Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport
Conductive polymer PEDOT:PSS is widely used in flexible electronics; however, the structural and electronic impacts of secondary doping remain poorly understood at the molecular level. In this study, we employ a dual-spectroscopy strategy—x-ray Photoelectron Spectroscopy (XPS) and Electron Paramagne...
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| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/adec3f |
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| author | B Ş Akdemir S Kol N Kizildağ A Y Oral |
| author_facet | B Ş Akdemir S Kol N Kizildağ A Y Oral |
| author_sort | B Ş Akdemir |
| collection | DOAJ |
| description | Conductive polymer PEDOT:PSS is widely used in flexible electronics; however, the structural and electronic impacts of secondary doping remain poorly understood at the molecular level. In this study, we employ a dual-spectroscopy strategy—x-ray Photoelectron Spectroscopy (XPS) and Electron Paramagnetic Resonance (EPR)—to elucidate how ethylene glycol (EG) and dimethyl sulfoxide (DMSO) modulate the structure and charge transport properties of PEDOT:PSS films. While DMSO facilitates benzoid-to-quinoid transitions and supports polaron organization, EG promotes partial PSS removal and film morphology refinement. Spectroscopic analysis revealed a direct correlation between secondary doping-induced structural reordering and electronic structure characteristics, resulting in conductivity enhancements exceeding 400-fold relative to pristine PEDOT:PSS. By directly linking spectroscopic signatures with electrical performance, this work provides a molecular-level perspective on secondary doping effects, offering a rational basis for designing next-generation conductive polymer systems. |
| format | Article |
| id | doaj-art-0b31ae26a8564e78bcb89bf9ecbb7984 |
| institution | DOAJ |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-0b31ae26a8564e78bcb89bf9ecbb79842025-08-20T03:17:57ZengIOP PublishingMaterials Research Express2053-15912025-01-0112707530310.1088/2053-1591/adec3fSpectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transportB Ş Akdemir0https://orcid.org/0000-0001-7478-6753S Kol1https://orcid.org/0000-0003-2545-7077N Kizildağ2https://orcid.org/0000-0002-1059-7360A Y Oral3https://orcid.org/0000-0003-3211-5366Institute of Nanotechnology, Gebze Technical University , Kocaeli, TurkeyDepartment of Material Science and Engineering, Gebze Technical University , Kocaeli, TurkeyInstitute of Nanotechnology, Gebze Technical University , Kocaeli, TurkeyDepartment of Material Science and Engineering, Gebze Technical University , Kocaeli, TurkeyConductive polymer PEDOT:PSS is widely used in flexible electronics; however, the structural and electronic impacts of secondary doping remain poorly understood at the molecular level. In this study, we employ a dual-spectroscopy strategy—x-ray Photoelectron Spectroscopy (XPS) and Electron Paramagnetic Resonance (EPR)—to elucidate how ethylene glycol (EG) and dimethyl sulfoxide (DMSO) modulate the structure and charge transport properties of PEDOT:PSS films. While DMSO facilitates benzoid-to-quinoid transitions and supports polaron organization, EG promotes partial PSS removal and film morphology refinement. Spectroscopic analysis revealed a direct correlation between secondary doping-induced structural reordering and electronic structure characteristics, resulting in conductivity enhancements exceeding 400-fold relative to pristine PEDOT:PSS. By directly linking spectroscopic signatures with electrical performance, this work provides a molecular-level perspective on secondary doping effects, offering a rational basis for designing next-generation conductive polymer systems.https://doi.org/10.1088/2053-1591/adec3fPEDOT:PSSDMSOEGx-ray photoelectron spectroscopyelectron paramagnetic resonance |
| spellingShingle | B Ş Akdemir S Kol N Kizildağ A Y Oral Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport Materials Research Express PEDOT:PSS DMSO EG x-ray photoelectron spectroscopy electron paramagnetic resonance |
| title | Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport |
| title_full | Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport |
| title_fullStr | Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport |
| title_full_unstemmed | Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport |
| title_short | Spectroscopic decoding of solvent treatments in PEDOT:PSS via XPS and EPR analysis of charge transport |
| title_sort | spectroscopic decoding of solvent treatments in pedot pss via xps and epr analysis of charge transport |
| topic | PEDOT:PSS DMSO EG x-ray photoelectron spectroscopy electron paramagnetic resonance |
| url | https://doi.org/10.1088/2053-1591/adec3f |
| work_keys_str_mv | AT bsakdemir spectroscopicdecodingofsolventtreatmentsinpedotpssviaxpsandepranalysisofchargetransport AT skol spectroscopicdecodingofsolventtreatmentsinpedotpssviaxpsandepranalysisofchargetransport AT nkizildag spectroscopicdecodingofsolventtreatmentsinpedotpssviaxpsandepranalysisofchargetransport AT ayoral spectroscopicdecodingofsolventtreatmentsinpedotpssviaxpsandepranalysisofchargetransport |