N-Doped Graphene Nanoplatelets as Superior Metal-Free Counter Electrodes for Organic Dye-Sensitized Solar Cells
DC Field | Value | Language |
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dc.contributor.author | Ju, Myung Jong | - |
dc.contributor.author | Kim, Jae Cheon | - |
dc.contributor.author | Choi, Hyun-Jung | - |
dc.contributor.author | Choi, In Taek | - |
dc.contributor.author | Kim, Sang Gyun | - |
dc.contributor.author | Lim, Kimin | - |
dc.contributor.author | Ko, Jaejung | - |
dc.contributor.author | Lee, Jae-Joon | - |
dc.contributor.author | Jeon, In-Yup | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.date.accessioned | 2021-09-06T01:14:39Z | - |
dc.date.available | 2021-09-06T01:14:39Z | - |
dc.date.created | 2021-06-14 | - |
dc.date.issued | 2013-06 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/103153 | - |
dc.description.abstract | Highly efficient counter electrodes (CEs) for dye-sensitized solar cells (DSScs) were developed using thin films of scalable and high-quality, nitrogen-doped graphene nanoplatelets (NGnP), which was synthesized by a simple two-step reaction sequence. The resultant NGnP was deposited on fluorine-doped SnO2 (FTO)/glass substrates by using electrospray (e-spray) coating, and their electrocatalytic activities were systematically evaluated for Co(bpy)(3)(3+/2+) redox couple in DSSCs with an organic sensitizer. The e-sprayed NGnP thin films exhibited outstanding performances as CEs for DSSCs. The optimized NGnP electrode showed better electrochemical stability under prolonged cycling potential, and its R-ct at the interface of the CE/electrolyte decreased down to 1.73 Omega cm(2), a value much lower than that of the Pt electrode (3.15 Omega cm(2)). The DSSC with the optimized NGnP-CE had a higher fill factor (FF, 74.2%) and a cell efficiency (9.05%), whereas those of the DSSC using Pt-CE were only 70.6% and 8.43%, respectively. To the best of our knowledge, the extraordinarily better current voltage characteristics of the DSSC-NGnP outperforming the DSSC-Pt for the Co(bpy)(3)(3+/2+) redox couple (in paticular, FF and short circuit current, J(sc)) is highlighted for the first time. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | FUNCTIONALIZED GRAPHENE | - |
dc.subject | FILMS | - |
dc.subject | PERFORMANCE | - |
dc.subject | ELECTROCATALYST | - |
dc.subject | TRANSPARENT | - |
dc.subject | MORPHOLOGY | - |
dc.subject | NANOSHEETS | - |
dc.subject | COMPOSITE | - |
dc.subject | GRAPHITE | - |
dc.subject | PLATINUM | - |
dc.title | N-Doped Graphene Nanoplatelets as Superior Metal-Free Counter Electrodes for Organic Dye-Sensitized Solar Cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1021/nn4009774 | - |
dc.identifier.scopusid | 2-s2.0-84879671069 | - |
dc.identifier.wosid | 000321093800060 | - |
dc.identifier.bibliographicCitation | ACS NANO, v.7, no.6, pp.5243 - 5250 | - |
dc.relation.isPartOf | ACS NANO | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 7 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 5243 | - |
dc.citation.endPage | 5250 | - |
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.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | FUNCTIONALIZED GRAPHENE | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ELECTROCATALYST | - |
dc.subject.keywordPlus | TRANSPARENT | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordAuthor | N-doped graphene nanoplatelets | - |
dc.subject.keywordAuthor | charge-transfer resistance | - |
dc.subject.keywordAuthor | organic dye-sensitized solar cells | - |
dc.subject.keywordAuthor | electrocatalytic activity | - |
dc.subject.keywordAuthor | Co(bpy)(3)(3+/2+) redox couple | - |
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