Edge-carboxylated graphene nanoplatelets as oxygen-rich metal-free cathodes for organic dye-sensitized solar cells
DC Field | Value | Language |
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dc.contributor.author | Ju, Myung Jong | - |
dc.contributor.author | Jeon, In-Yup | - |
dc.contributor.author | Lim, Kimin | - |
dc.contributor.author | Kim, Jae Cheon | - |
dc.contributor.author | Choi, Hyun-Jung | - |
dc.contributor.author | Choi, In Taek | - |
dc.contributor.author | Eom, Yu Kyung | - |
dc.contributor.author | Kwon, Young Jin | - |
dc.contributor.author | Ko, Jaejung | - |
dc.contributor.author | Lee, Jae-Joon | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.date.accessioned | 2021-09-05T10:48:04Z | - |
dc.date.available | 2021-09-05T10:48:04Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-03 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/99082 | - |
dc.description.abstract | Edge-carboxylated graphene nanoplatelets (ECGnPs) were synthesized by the simple, efficient and eco-friendly ball-milling of graphite in the presence of dry ice and used as oxygen-rich metal-free counter electrodes (CEs) in organic dye-sensitized solar cells (DSSCs), for the first time. The resultant ECGnPs are soluble in many polar solvents including 2-propanol due to the polar nature of numerous carboxylic acids at edges, allowing an electrostatic spray (e-spray) to be deposited on fluorine-doped SnO2 (FTO)/glass substrates. The ECGnP-CE exhibited profound improvements in the electrochemical stability for the Co(bpy)(3)(2+/3+) redox couple compared to the platinum (Pt)-CE. The charge transfer resistance (R-CT), related to the interface between an electrolyte and a CE, was significantly reduced to 0.87 Omega cm(2), much lower than those of (Pt)-CE (2.19 Omega cm(2)), PEDOT: PSS-CE (2.63 Omega cm(2)) and reduced graphene oxide (rGO)-CE (1.21 Omega cm(2)). The DSSC based on the JK-303-sensitizer and ECGnP-CE displayed a higher photovoltaic performance ( FF, J(sc), and eta, 74.4%, 14.07 mA cm(-2) and 9.31%) than those with the Pt-CE (71.6%, 13.69 mA cm(-2) and 8.67%), PEDOT: PSS ( 68.7%, 13.68 mA cm(-2) and 8.25%) and rGO-CE (72.9%, 13.88 mA cm(-2) and 8.94%). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | COUNTER ELECTRODES | - |
dc.subject | LOW-COST | - |
dc.subject | REDOX ELECTROLYTE | - |
dc.subject | EFFICIENT | - |
dc.subject | COBALT | - |
dc.subject | CARBON | - |
dc.subject | TRANSPARENT | - |
dc.subject | FILMS | - |
dc.subject | PERFORMANCE | - |
dc.subject | COMPOSITES | - |
dc.title | Edge-carboxylated graphene nanoplatelets as oxygen-rich metal-free cathodes for organic dye-sensitized solar cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ko, Jaejung | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1039/c3ee43732a | - |
dc.identifier.scopusid | 2-s2.0-84897622774 | - |
dc.identifier.wosid | 000333203900022 | - |
dc.identifier.bibliographicCitation | ENERGY & ENVIRONMENTAL SCIENCE, v.7, no.3, pp.1044 - 1052 | - |
dc.relation.isPartOf | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.title | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.volume | 7 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 1044 | - |
dc.citation.endPage | 1052 | - |
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 | Energy & Fuels | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | COUNTER ELECTRODES | - |
dc.subject.keywordPlus | LOW-COST | - |
dc.subject.keywordPlus | REDOX ELECTROLYTE | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | COBALT | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | TRANSPARENT | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | COMPOSITES | - |
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