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Jang, Ji-Wook
JW Energy Lab.
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dc.citation.endPage 267 -
dc.citation.number 2 -
dc.citation.startPage 261 -
dc.citation.title CHEMSUSCHEM -
dc.citation.volume 6 -
dc.contributor.author Youn, Duck Hyun -
dc.contributor.author Seol, Minsu -
dc.contributor.author Kim, Jae Young -
dc.contributor.author Jang, Ji-Wook -
dc.contributor.author Choi, Youngwoo -
dc.contributor.author Yong, Kijung -
dc.contributor.author Lee, Jae Sung -
dc.date.accessioned 2023-12-22T04:12:13Z -
dc.date.available 2023-12-22T04:12:13Z -
dc.date.created 2015-07-27 -
dc.date.issued 2013-02 -
dc.description.abstract The development of an efficient noble-metal-free counter electrode is crucial for possible applications of quantum-dot-sensitized solar cells (QDSSCs). Herein, we present TiN nanoparticles on a carbon nanotube (CNT)-graphene hybrid support as a noble-metal-free counter electrode for QDSSCs employing a polysulfide electrolyte. The resulting TiN/CNT-graphene possesses an extremely high surface roughness, a good metal-support interaction, and less aggregation relative to unsupported TiN; it also has superior solar power conversion efficiency (4.13%) when applying a metal mask, which is much higher than that of the state-of-the-art Au electrode (3.35%). Based on electrochemical impedance spectroscopy measurements, the enhancement is ascribed to a synergistic effect between TiN nanoparticles and the CNT-graphene hybrid, the roles of which are to provide active sites for the reduction of polysulfide ions and electron pathways to TiN nanoparticles, respectively. The combination of graphene and CNTs leads to a favorable morphology that prevents stacking of graphene or bundling of CNTs, which maximizes the contact of the support with TiN nanoparticles and improves electron-transfer capability relative to either carbon material alone -
dc.identifier.bibliographicCitation CHEMSUSCHEM, v.6, no.2, pp.261 - 267 -
dc.identifier.doi 10.1002/cssc.201200775 -
dc.identifier.issn 1864-5631 -
dc.identifier.scopusid 2-s2.0-84874368282 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/12804 -
dc.identifier.url http://onlinelibrary.wiley.com/doi/10.1002/cssc.201200775/abstract -
dc.identifier.wosid 000314659100006 -
dc.language 영어 -
dc.publisher WILEY-V C H VERLAG GMBH -
dc.title.alternative TiN Nanoparticles on CNT-Graphene Hybrid Support as Noble-Metal-Free Counter Electrode for Quantum-Dot-Sensitized Solar Cells -
dc.title TiN Nanoparticles on CNT-Graphene Hybrid Support as Noble-Metal-Free Counter Electrode for Quantum-Dot-Sensitized Solar Cells -
dc.type Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor electron microscopy -
dc.subject.keywordAuthor nanoparticles -
dc.subject.keywordAuthor nanotubes -
dc.subject.keywordAuthor quantum dots -
dc.subject.keywordAuthor titanium nitride -
dc.subject.keywordPlus HIGHLY EFFICIENT -
dc.subject.keywordPlus TITANIUM NITRIDE -
dc.subject.keywordPlus CARBON -
dc.subject.keywordPlus FILMS -
dc.subject.keywordPlus OXIDE -
dc.subject.keywordPlus CDS -
dc.subject.keywordPlus NANOCRYSTALS -
dc.subject.keywordPlus REDUCTION -
dc.subject.keywordPlus PBS -

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