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DC Field | Value | Language |
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dc.citation.endPage | 2972 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 2966 | - |
dc.citation.title | ANALYTICAL CHEMISTRY | - |
dc.citation.volume | 94 | - |
dc.contributor.author | Botteon, Alessandra | - |
dc.contributor.author | Kim, Wang-Hyo | - |
dc.contributor.author | Colombo, Chiara | - |
dc.contributor.author | Realini, Marco | - |
dc.contributor.author | Castiglioni, Chiara | - |
dc.contributor.author | Matousek, Pavel | - |
dc.contributor.author | Kim, Byung-Man | - |
dc.contributor.author | Kwon, Tae-Hyuk | - |
dc.contributor.author | Conti, Claudia | - |
dc.date.accessioned | 2023-12-21T14:38:36Z | - |
dc.date.available | 2023-12-21T14:38:36Z | - |
dc.date.created | 2022-02-17 | - |
dc.date.issued | 2022-02 | - |
dc.description.abstract | The dye distribution within a photo-electrode is a key parameter in determining the performances of dye-sensitized photon-to-electron conversion devices, such as dye-sensitized solar cells (DSSCs). A traditional, depth profiling investigation by destructive means including cross-sectional sampling is unsuitable for large quality control applications in manufacturing processes. Therefore, a non-destructive monitoring of the dye depth profile is required, which is the first step toward a non-destructive evaluation of the internal degradation of the device in the field. Here, we present a conceptual demonstration of the ability to monitor the dye depth profile within the light active layer of DSSCs by non-destructive means with high chemical specificity using a recently developed non-destructive/non-invasive Raman method, micro-spatially offset Raman spectroscopy (micro-SORS). Micro-SORS is able to probe through turbid materials, providing the molecular identification of compounds located under the surface, without the need of resorting to a cross-sectional analysis. The study was performed on the photo-electrode of DSSCs. This represents the first demonstration of the micro-SORS concept in the solar cell area as well as, more generally, the application of micro-SORS to the thinnest layer to date. A sample set has been prepared with varying concentrations of the dye and the thickness of the matrix consisting of a titanium dioxide layer. The results showed that micro-SORS can unequivocally discriminate between the homogeneous and inhomogeneous dye depth profiles. Moreover, micro-SORS outcomes have been compared with the results obtained with destructive time-of-flight secondary ion mass spectrometry measurements. The results of the two techniques are in good agreement, confirming the reliability of micro-SORS analysis. Therefore, this study is expected to pave the way for establishing a wider and more effective monitoring capability in this important field. | - |
dc.identifier.bibliographicCitation | ANALYTICAL CHEMISTRY, v.94, no.6, pp.2966 - 2972 | - |
dc.identifier.doi | 10.1021/acs.analchem.1c05011 | - |
dc.identifier.issn | 0003-2700 | - |
dc.identifier.scopusid | 2-s2.0-85124273849 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/57249 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acs.analchem.1c05011 | - |
dc.identifier.wosid | 000758097600001 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Non-destructive Monitoring of Dye Depth Profile in Mesoporous TiO2 Electrodes of Solar Cells with Micro-SORS | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
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