Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation
Impacto
Scholar |
Otros documentos de la autoría: Kim, Tea-Yon; Kim, Byung Su; Oh, Jong Gyu; Park, Seul Chan; Jang, Jaeyoung; Hamann, Thomas; Kang, Young Soo; Bang, Jin Ho; Gimenez, Sixto; Kang, Yong Soo
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadatos
Título
Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent GenerationAutoría
Fecha de publicación
2021-02-01Editor
American Chemical SocietyISSN
1944-8244; 1944-8252Cita bibliográfica
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.0c19352Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/abs/10.1021/acsami.0c19352Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
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 ... [+]
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. [-]
Publicado en
ACS Applied Materials and Interfaces, 2021, vol. 13, no 5Entidad financiadora
Korea Center for Artificial Photosynthesis (KCAP) of Sogang University - Ministry of Science, ICT, and Future Planning (MSIP) through a National Research Foundation of Korea | Basic Science Research Program through the National Research Foundation (NRF) of Korea - Ministry of Science and ICT | Ministry of Education | Ministerio de Ciencia, Innovación y Universidades
Código del proyecto o subvención
2009-0093883 | NRF-2019R1A2C1003429 | NRF-2018R1A6A1A03024231 | ENE2017–85087-C3-1-R
Derechos de acceso
info:eu-repo/semantics/openAccess
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