Tailor-Made Hole-Conducting Coadsorbents for Highly Efficient Organic Dye-Sensitized Solar Cells
DC Field | Value | Language |
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dc.contributor.author | Choi, In Taek | - |
dc.contributor.author | Ju, Myung Jong | - |
dc.contributor.author | Song, Sang Hyun | - |
dc.contributor.author | Kim, Sang Gyun | - |
dc.contributor.author | Cho, Dae Won | - |
dc.contributor.author | Im, Chan | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.date.accessioned | 2021-09-05T19:11:32Z | - |
dc.date.available | 2021-09-05T19:11:32Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2013-11-11 | - |
dc.identifier.issn | 0947-6539 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101618 | - |
dc.description.abstract | The Y-shaped, low molecular mass, hole-conductor (HC), acidic coadsorbents 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}benzoic acid (PTZ1) and 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}biphenyl-4-carboxylic acid (PTZ2) were developed. Owing to their tuned and negative-shifted HOMO levels (vs. NHE), they were used as HC coadsorbents in dye-sensitized solar cells (DSSCs) to improve cell performance through desired cascade-type hole-transfer processes. Their detailed functions as HC coadsorbents in DSSCs were investigated to obtain evidence for the desired cascade-type hole-transfer processes. They have multiple functions, such as preventing - stacking of dye molecules, harvesting light of shorter wavelengths, and faster dye regeneration. By using PTZ2 as the tailor-made HC coadsorbent on the TiO2 surface with the organic dye NKX2677, an extremely high conversion efficiency of 8.95% was achieved under 100mWcm(-2) AM 1.5G simulated light (short-circuit current J(SC)=16.56mAcm(-2), open-circuit voltage V-OC=740mV, and fill factor of 73%). Moreover, J(SC) was increased by 13%, V-OC by 27% and power-conversion efficiency by 49% in comparison to an NKX2677-based DSSC without an HC coadsorbent. This is due to the HC coadsorbent having a HOMO energy level well matched to that of the NKX-2677 dye to induce the desired cascade-type hole-transfer processes, which are associated with a slower charge recombination, fast dye regeneration, effective screening of liquid electrolytes, and an induced negative shift of the quasi-Fermi level of the electrode. Thus, this new class of Y-shaped, low molecular weight, organic, HC coadsorbents based on phenothiazine carboxylic acid derivatives hold promise for highly efficient organic DSSCs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | NANOCRYSTALLINE TIO2 FILMS | - |
dc.subject | COUMARIN DYES | - |
dc.subject | TRANSFER DYNAMICS | - |
dc.subject | IR SENSITIZATION | - |
dc.subject | CHARGE-TRANSFER | - |
dc.subject | RECOMBINATION | - |
dc.subject | TRANSPORT | - |
dc.subject | PERFORMANCE | - |
dc.subject | IMPEDANCE | - |
dc.subject | ELECTROLYTE | - |
dc.title | Tailor-Made Hole-Conducting Coadsorbents for Highly Efficient Organic Dye-Sensitized Solar Cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Cho, Dae Won | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1002/chem.201301658 | - |
dc.identifier.scopusid | 2-s2.0-84887021798 | - |
dc.identifier.wosid | 000326311400020 | - |
dc.identifier.bibliographicCitation | CHEMISTRY-A EUROPEAN JOURNAL, v.19, no.46, pp.15545 - 15555 | - |
dc.relation.isPartOf | CHEMISTRY-A EUROPEAN JOURNAL | - |
dc.citation.title | CHEMISTRY-A EUROPEAN JOURNAL | - |
dc.citation.volume | 19 | - |
dc.citation.number | 46 | - |
dc.citation.startPage | 15545 | - |
dc.citation.endPage | 15555 | - |
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 | NANOCRYSTALLINE TIO2 FILMS | - |
dc.subject.keywordPlus | COUMARIN DYES | - |
dc.subject.keywordPlus | TRANSFER DYNAMICS | - |
dc.subject.keywordPlus | IR SENSITIZATION | - |
dc.subject.keywordPlus | CHARGE-TRANSFER | - |
dc.subject.keywordPlus | RECOMBINATION | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | IMPEDANCE | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordAuthor | charge transfer | - |
dc.subject.keywordAuthor | dyes | - |
dc.subject.keywordAuthor | pigments | - |
dc.subject.keywordAuthor | electrochemistry | - |
dc.subject.keywordAuthor | photophysics | - |
dc.subject.keywordAuthor | solar cells | - |
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