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Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation
dc.contributor.author | Kim, Tea-Yon | |
dc.contributor.author | Kim, Byung Su | |
dc.contributor.author | Oh, Jong Gyu | |
dc.contributor.author | Park, Seul Chan | |
dc.contributor.author | Jang, Jaeyoung | |
dc.contributor.author | Hamann, Thomas | |
dc.contributor.author | Kang, Young Soo | |
dc.contributor.author | Bang, Jin Ho | |
dc.contributor.author | Gimenez, Sixto | |
dc.contributor.author | Kang, Yong Soo | |
dc.date.accessioned | 2021-11-16T12:38:07Z | |
dc.date.available | 2021-11-16T12:38:07Z | |
dc.date.issued | 2021-02-01 | |
dc.identifier.citation | Kim, T. Y.; Kim, B. S.; Oh, J. G.; Park, S. C.; Jang, J.; Hamann, T. W.; Kang, Y. S.; Bang, J. H.;Gimenez, S.; Kang, Y. S. Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation. ACS Appl. Mater. Interfaces 2021, 13, 5, 6208-6218., DOI: 10.1021/acsami.0c19352 | ca_CA |
dc.identifier.issn | 1944-8244 | |
dc.identifier.issn | 1944-8252 | |
dc.identifier.uri | http://hdl.handle.net/10234/195521 | |
dc.description.abstract | Metal oxide semiconductor/chalcogenide quantum dot (QD) heterostructured photoanodes show photocurrent densities >30 mA/cm2 with ZnO, approaching the theoretical limits in photovoltaic (PV) cells. However, comparative performance has not been achieved with TiO2. Here, we applied a TiO2(B) surface passivation layer (SPL) on TiO2/QD (PbS and CdS) and achieved a photocurrent density of 34.59 mA/cm2 under AM 1.5G illumination for PV cells, the highest recorded to date. The SPL improves electron conductivity by increasing the density of surface states, facilitating multiple trapping/detrapping transport, and increasing the coordination number of TiO2 nanoparticles. This, along with impeded electron recombination, led to enhanced collection efficiency, which is a major factor for performance. Furthermore, SPL-treated TiO2/QD photoanodes were successfully exploited in photoelectrochemical water splitting cells, showing an excellent photocurrent density of 14.43 mA/cm2 at 0.82 V versus the Reversible Hydrogen Electrode (RHE). These results suggest a new promising strategy for the development of high-performance photoelectrochemical devices. | ca_CA |
dc.description.sponsorShip | Funding for open access charge: CRUE-Universitat Jaume I | |
dc.format.extent | 11 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 and Interfaces, 2021, vol. 13, no 5 | ca_CA |
dc.rights.uri | http://creativecommons.org/licenses/by-sa/4.0/ | ca_CA |
dc.subject | TiO2/QD | ca_CA |
dc.subject | photoanode | ca_CA |
dc.subject | photoelectrochemical cells | ca_CA |
dc.subject | surface passivation layer | ca_CA |
dc.subject | surface state | ca_CA |
dc.subject | charge collection | ca_CA |
dc.subject | photocurrent density | ca_CA |
dc.title | Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1021/acsami.0c19352 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://pubs.acs.org/doi/abs/10.1021/acsami.0c19352 | ca_CA |
dc.description.sponsorship | This work was supported by the Korea Center for Artificial Photosynthesis (KCAP) of Sogang University, funded by the Ministry of Science, ICT, and Future Planning (MSIP) through a National Research Foundation of Korea (Grant no. 2009-0093883). This work also was supported by a grant from the Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT (NRF-2019R1A2C1003429) and by the Ministry of Education (NRF-2018R1A6A1A03024231). Also, this work was supported by the Ministerio de Ciencia, Innovacio′n y Universidades of Spain through the project ENE2017–85087-C3-1-R. Therefore, the authors acknowledge and thank the Korean and Spanish governments for technical and financial support. S. D. G. | |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
project.funder.name | Korea Center for Artificial Photosynthesis (KCAP) of Sogang University - Ministry of Science, ICT, and Future Planning (MSIP) through a National Research Foundation of Korea | ca_CA |
project.funder.name | Basic Science Research Program through the National Research Foundation (NRF) of Korea - Ministry of Science and ICT | ca_CA |
project.funder.name | Ministry of Education | ca_CA |
project.funder.name | Ministerio de Ciencia, Innovación y Universidades | ca_CA |
oaire.awardNumber | 2009-0093883 | ca_CA |
oaire.awardNumber | NRF-2019R1A2C1003429 | ca_CA |
oaire.awardNumber | NRF-2018R1A6A1A03024231 | ca_CA |
oaire.awardNumber | ENE2017–85087-C3-1-R | ca_CA |
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