Variable-Temperature Resonance Raman Studies to Probe Interchain Ordering for Semiconducting Conjugated Polymers with Different Chain Curvature
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sutton, Joshua J. | - |
dc.contributor.author | Thanh Luan Nguyen | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Gordon, Keith C. | - |
dc.date.accessioned | 2021-09-01T16:07:58Z | - |
dc.date.available | 2021-09-01T16:07:58Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2019-04-15 | - |
dc.identifier.issn | 1861-4728 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/66013 | - |
dc.description.abstract | The morphology and crystallinity of the polymers used to fabricate bulk heterojuction (BHJ) solar cells significantly influences the efficiency of the cells. We have used variable-temperature (VT) spectroscopy techniques, namely VT emission and VT resonance Raman spectroscopy (VT-RRS), to examine how the backbone linearity of a conducting polymer affects its electronic response to temperature and variations in solution behavior. We have studied two types of donor-acceptor polymers used in BHJ cells with differing backbone structures; they are poly-{5,6-bis(tetradecyloxy)-4-(thiophen-2-yl)benzo[c]-1,2,5-thiadiazole} (PTBT) which has a curved backbone and poly-{5,6-bis(tetradecyloxy)-4-(thieno[3,2-b]-thiophen-2-yl)benzo[c]-1,2,5-thiadiazole} (PTTBT) which has a linear chain structure. Time-dependent density functional theory (TD-DFT) calculations and resonance Raman spectra (RRS) of PTTBT revealed the presence of three electronic transitions, with character that varies between to *, mixed to */charge transfer and pure charge transfer in nature. Emission spectra of PTTBT showed spectral changes at 650 and 710nm with varied temperature (-10 to 60 degrees C). Variable-temperature RRS was measured in resonance with the lowest and highest energy electronic transitions. The changes were interpreted using two-dimensional correlation spectroscopy (2DCOS) analysis. PTTBT showed gradual shifts to lower wavenumbers of modes at around 1425, 1450 and 1500cm(-1). For PTBT larger and more rapid spectral changes are observed at 1440 and 1460cm(-1) consistent with greater variation in the electronic nature upon heating. Further study into the influence of polymer linearity on crystallinity and long range order was carried out using low-frequency Raman (LFR) to examine drop cast films under a variety of different conditions. LFR spectra showed that PTTBT has a band at 73cm(-1). This is observed under a variety of film-forming conditions. PTBT does not show distinct low frequency modes, consistent with its low crystallinity. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | SOLAR-CELLS | - |
dc.subject | ELECTRON-MICROSCOPY | - |
dc.subject | PHOTOVOLTAIC CELLS | - |
dc.subject | MOLECULAR ORDER | - |
dc.subject | SPECTROSCOPY | - |
dc.subject | MORPHOLOGY | - |
dc.subject | PERFORMANCE | - |
dc.subject | CRYSTALLINITY | - |
dc.subject | AGGREGATION | - |
dc.subject | ORIENTATION | - |
dc.title | Variable-Temperature Resonance Raman Studies to Probe Interchain Ordering for Semiconducting Conjugated Polymers with Different Chain Curvature | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1002/asia.201801667 | - |
dc.identifier.scopusid | 2-s2.0-85059834709 | - |
dc.identifier.wosid | 000469387100014 | - |
dc.identifier.bibliographicCitation | CHEMISTRY-AN ASIAN JOURNAL, v.14, no.8, pp.1175 - 1183 | - |
dc.relation.isPartOf | CHEMISTRY-AN ASIAN JOURNAL | - |
dc.citation.title | CHEMISTRY-AN ASIAN JOURNAL | - |
dc.citation.volume | 14 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 1175 | - |
dc.citation.endPage | 1183 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | ELECTRON-MICROSCOPY | - |
dc.subject.keywordPlus | PHOTOVOLTAIC CELLS | - |
dc.subject.keywordPlus | MOLECULAR ORDER | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CRYSTALLINITY | - |
dc.subject.keywordPlus | AGGREGATION | - |
dc.subject.keywordPlus | ORIENTATION | - |
dc.subject.keywordAuthor | conducting polymers | - |
dc.subject.keywordAuthor | long range order | - |
dc.subject.keywordAuthor | low-frequency Raman | - |
dc.subject.keywordAuthor | resonance Raman spectroscopy | - |
dc.subject.keywordAuthor | variable temperature | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.