Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 방진호 | - |
dc.date.accessioned | 2018-03-24T05:44:18Z | - |
dc.date.available | 2018-03-24T05:44:18Z | - |
dc.date.issued | 2013-02 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, 2013, 5(3), P.479-484 | en_US |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://pubs.acs.org/doi/ipdf/10.1021/am302522c | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/51824 | - |
dc.description.abstract | Traditional Pt counter electrode in quantum-dot-sensitized solar cells suffers from a low electrocatalytic activity and instability due to irreversible surface adsorption of sulfur species incurred while regenerating polysulfide (S-n(2-)/S2-) electrolytes. To overcome such constraints, chemically synthesized Cu2ZnSn(S1-xSex)(4) nanocrystals were evaluated as an alternative to Pt. The resulting chalcogenides exhibited remarkable electrocatalytic activities for reduction of polysulfide (S-n(2-)) to sulfide (S2-), which were dictated by the ratios of S/Se. In this study, a quantum dot sensitized solar cell constructed with Cu2ZnSn(S0.5Se0.5)(4) as a counter electrode showed the highest energy conversion efficiency of 3.01%, which was even higher than that using Pt (1.24%). The compositional variations in between Cu2ZnSnS4 (x = 0) and Cu2ZnSnSe4 (x = 1) revealed that the solar cell performances were closely related to a difference in electrocatalytic activities for polysulfide reduction governed by the S/Se ratios. | en_US |
dc.description.sponsorship | This work was supported by the Pioneer Research Center Program through the National Research Foundation of Korea (NRF, 2011-0001646) and by an NRF grant (2011-0028604) funded by the Ministry of Education, Science, and Technology (MEST). This work was also supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Knowledge Economy, Republic of Korea (20124030200130). | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | quantum-dot-sensitized solar cells | en_US |
dc.subject | copper zinc tin sulfur (selenium) | en_US |
dc.subject | counter electrodes | en_US |
dc.subject | electrocatalytic activity | en_US |
dc.subject | NANOCRYSTALS | en_US |
dc.subject | CONVERSION | en_US |
dc.subject | CARBON | en_US |
dc.title | Highly Electrocatalytic Cu2ZnSn(S1-xSex)(4) Counter Electrodes for Quantum-Dot-Sensitized Solar Cells | en_US |
dc.type | Article | en_US |
dc.relation.no | 3 | - |
dc.relation.volume | 5 | - |
dc.identifier.doi | 10.1021/am302522c | - |
dc.relation.page | 479-484 | - |
dc.relation.journal | ACS APPLIED MATERIALS & INTERFACES | - |
dc.contributor.googleauthor | Cao, Yuebin | - |
dc.contributor.googleauthor | Xiao, Yanjun | - |
dc.contributor.googleauthor | Jung, Jin-Young | - |
dc.contributor.googleauthor | Um, Han-Don | - |
dc.contributor.googleauthor | Jee, Sang-Won | - |
dc.contributor.googleauthor | Choi, Hye Mi | - |
dc.contributor.googleauthor | Bang, Jin Ho | - |
dc.contributor.googleauthor | Lee, Jung-Ho | - |
dc.relation.code | 2013008623 | - |
dc.sector.campus | S | - |
dc.sector.daehak | GRADUATE SCHOOL[S] | - |
dc.sector.department | DEPARTMENT OF BIONANOTECHNOLOGY | - |
dc.identifier.pid | jbang | - |
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