Mostrar el registro sencillo del ítem
Overcoming Charge Collection Limitation at Solid/Liquid Interface by a Controllable Crystal Deficient Overlayer
dc.contributor.author | Zhang, Kan | |
dc.contributor.author | Ravishankar, Sandheep | |
dc.contributor.author | Ma, Ming | |
dc.contributor.author | Veerappan, Ganapathy | |
dc.contributor.author | Bisquert, Juan | |
dc.contributor.author | Fabregat-Santiago, Francisco | |
dc.contributor.author | Park, Jong Hyeok | |
dc.date.accessioned | 2018-03-07T07:55:42Z | |
dc.date.available | 2018-03-07T07:55:42Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | ZHANG, Kan, et al. Overcoming charge collection limitation at solid/liquid interface by a controllable crystal deficient overlayer. Advanced Energy Materials, 2017, vol. 7, no 3. | ca_CA |
dc.identifier.issn | 1614-6832 | |
dc.identifier.issn | 1614-6840 | |
dc.identifier.uri | http://hdl.handle.net/10234/173209 | |
dc.description.abstract | Bulk and surface charge recombination of photoelectrode are two key processes that significantly hinder solar-to-fuel conversion of photoelectrochemical cell (PEC). In this study, the function of a “crystal-deficient” overlayer is unveiled, which outperforms a traditionally used amorphous or crystalline overlayer in PEC water splitting by exhibiting a high conductivity and large electron diffusion length to enable unlimited electron collection. The optimized ≈2.5 nm thickness of the “crystal-deficient” shell results in a depletion layer with a width of 3 nm, which overcomes the flat band limitation of the photovoltage and increases the light absorptivity in the wavelength range from 300 to 420 nm. In addition, a 50-fold increase in the conductivity yields a one-order-of-magnitude increase in the diffusion length of an electron (Ln)(≈20 μm), allowing for unlimited electron collection in the 1.9 μm TiO2 nanowire array with the “crystal-deficient” shell. The controllable “crystal-deficient” overlayer in rutile TiO2 nanowires photoanode achieves a photocurrent density greater than 2.0 mA cm−2 at 1.23 V versus reversible hydrogen electrode (RHE), a 1.18% applied bias photon-to-current efficiency at 0.49 V versus RHE, a faradaic efficiency greater than 93.5% at 0.6 V versus Pt under air mass 1.5G simulated solar light illumination (100 mW cm−2). | ca_CA |
dc.format.extent | 8 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Wiley | ca_CA |
dc.relation.isPartOf | Advanced Energy Materials, 2017, vol. 7, no 3. | ca_CA |
dc.rights | Copyright © John Wiley & Sons, Inc. All Rights Reserved | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | charge carrier separation | ca_CA |
dc.subject | crystal deficient overlayer | ca_CA |
dc.subject | solar water splitting | ca_CA |
dc.subject | solid | ca_CA |
dc.subject | liquid interface | ca_CA |
dc.title | Overcoming Charge Collection Limitation at Solid/Liquid Interface by a Controllable Crystal Deficient Overlayer | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1002/aenm.201600923 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://onlinelibrary.wiley.com/doi/10.1002/aenm.201600923/full | ca_CA |
dc.contributor.funder | NRF of Korea Grant - Ministry of Science, ICT, and Future Planning / NRF-2013R1A2A1A09014038; 2015M1A2A2074663; 2016M3D3A1A01913254; Yonsei University Future-leading Research Initiative / 2015-22-0067; Santiago Grisolia program from Generalitat Valenciana / 2014/034; Generalitat Valenciana / PROMETEOII/2014/020 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
Ficheros en el ítem
Ficheros | Tamaño | Formato | Ver |
---|---|---|---|
No hay ficheros asociados a este ítem. |
Este ítem aparece en la(s) siguiente(s) colección(ones)
-
INAM_Articles [531]