UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

New Insights into Defect-Mediated Heterostructures for Photoelectrochemical Water Splitting

An, X; Li, T; Wen, B; Tang, J; Hu, Z; Liu, L-M; Qu, J; ... Liu, H; + view all (2016) New Insights into Defect-Mediated Heterostructures for Photoelectrochemical Water Splitting. Advanced Energy Materials , 6 (8) , Article 1502268. 10.1002/aenm.201502268.

[thumbnail of aenm201502268.pdf] Text
aenm201502268.pdf - Published version
Access restricted to UCL open access staff

Download (2MB)

Abstract

Understanding the interfacial electronic structures of heterojunctions, a chal-lenging undertaking, is extremely important to the design of photoelectrodes for effi cient water splitting. The heterostructured interfaces in terms of crystal defects at the atomic-level exemplifi ed by TiO 2/BiVO4 are studied. Results from both experimental observations and theoretical calculations clearly con-fi rm the spontaneous formation of defective interfaces in the heterostructures. TiO 2/BiVO4 junction with engineered interfacial defects can effi ciently increase the carrier density and extend the lifetime of electrons. The inherent phenom-enon of defective electronic structures in different heterostructures creates a signifi cant impact on their photoelectrochemical performance. The synergetic effect between defect-mediated mechanism and organic quantum dots sensiti-zation yields signifi cantly increased photoconversion effi ciency, which is even superior to that of common metal sulfi de sensitized ones. This result demon-strates an approach worthy for the design and fabrication of defect-mediated heterostructures for water splitting, without utilizing harmful metal sulfi des. Moreover, new insights into the infl uence of intrinsic defects on the interfacial charge transfer process between two different semiconductors for energy-related applications have also been provided.

Type: Article
Title: New Insights into Defect-Mediated Heterostructures for Photoelectrochemical Water Splitting
DOI: 10.1002/aenm.201502268
Publisher version: http://dx.doi.org/10.1002/aenm.201502268
Language: English
Additional information: This is the peer reviewed version of the following article: An, X; Li, T; Wen, B; Tang, J; Hu, Z; Liu, L-M; Qu, J; (2016) New Insights into Defect-Mediated Heterostructures for Photoelectrochemical Water Splitting. Advanced Energy Materials , 6 (8) , Article 1502268., which has been published in final form at http://dx.doi.org/10.1002/aenm.201502268. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Access may initially be restricted by the publisher.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1478319
Downloads since deposit
1Download
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item