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Triumphing over Charge Transfer Limitations of PEDOT Nanofiber Reduction Catalyst by 1,2-Ethanedithiol Doping for Quantum Dot Solar Cells
dc.contributor.author | Kim, Tea-Yon | |
dc.contributor.author | Lee, Tae Kyung | |
dc.contributor.author | Kim, Byung Su | |
dc.contributor.author | Park, Seul Chan | |
dc.contributor.author | Lee, Sungjin | |
dc.contributor.author | Im, Seung Soon | |
dc.contributor.author | Bisquert, Juan | |
dc.contributor.author | Kang, Yong Soo | |
dc.date.accessioned | 2017-11-13T11:02:46Z | |
dc.date.available | 2017-11-13T11:02:46Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 1944-8244 | |
dc.identifier.issn | 1944-8252 | |
dc.identifier.uri | http://hdl.handle.net/10234/170009 | |
dc.description.abstract | Charge transfer between a conducting polymer-based counter electrode (CE) and a polysulfide (S2–/Sn2–) electrolyte mediator is a key limitation to improvements of solar energy conversion efficiency (ECE) in quantum-dot-sensitized solar cells (QDSCs). In this paper, 1,2-ethanedithiol (EDT) was doped into nanofibrous poly(3,4-ethylenedioxythiophene) (PEDOT NF) to overcome the charge transfer limitation between PEDOT NF and S2–/Sn2–. EDT not only helps to reduce the aggregation and thus enhance the linearization of the PEDOT chains but also changes the molecular conformation of the PEDOT chains from a benzoid to a quinoid structure. EDT-doped PEDOT NF-based CEs showed almost 3.7 times higher conductivity, better electrocatalytic activity, and improved compatibility with S2–/Sn2– in an aqueous electrolyte. As a result, the charge transfer resistance between the polymer-based CE and the S2–/Sn2– electrolyte was significantly reduced, resulting in over 3% ECE in QDSCs, more than double that of a bare PEDOT NF-based CE. | ca_CA |
dc.format.extent | 8 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | ACS applied materials & interfaces, 2017, vol. 9, no 2, p. 1877-1884. | ca_CA |
dc.rights | © American Chemical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | charge transfer limitation | ca_CA |
dc.subject | doping | ca_CA |
dc.subject | flexible device | ca_CA |
dc.subject | metal-free reduction catalyst | ca_CA |
dc.subject | PEDOT | ca_CA |
dc.subject | quantum dot solar cells | ca_CA |
dc.title | Triumphing over Charge Transfer Limitations of PEDOT Nanofiber Reduction Catalyst by 1,2-Ethanedithiol Doping for Quantum Dot Solar Cells | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/acsami.6b12536 | |
dc.relation.projectID | Korea Center for Artificial Photosynthesis (KCAP) / Number 2009-0093883 | ca_CA |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://pubs.acs.org/doi/abs/10.1021/acsami.6b12536 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
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