Show simple item record

dc.contributor.authorCheng, WH
dc.contributor.authorRichter, MH
dc.contributor.authorMay, Matthias
dc.contributor.authorOhlmann, J
dc.contributor.authorLackner, D
dc.contributor.authorDimroth, F
dc.contributor.authorHannappel, T
dc.contributor.authorAtwater, HA
dc.contributor.authorLewerenz, HJ
dc.date.accessioned2018-11-16T00:30:31Z
dc.date.available2018-11-16T00:30:31Z
dc.date.issued2018-08
dc.identifier.issn2380-8195
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/285122
dc.description.abstractRecent rapid progress in efficiencies for solar water splitting by photoelectrochemical devices has enhanced its prospects to enable storable renewable energy. Efficient solar fuel generators all use tandem photoelectrode structures, and advanced integrated devices incorporate corrosion protection layers as well as heterogeneous catalysts. Realization of near thermodynamic limiting performance requires tailoring the energy band structure of the photoelectrode and also the optical and electronic properties of the surface layers exposed to the electrolyte. Here, we report a monolithic device architecture that exhibits reduced surface reflectivity in conjunction with metallic Rh nanoparticle catalyst layers that minimize parasitic light absorption. Additionally, the anatase TiO2 protection layer on the photocathode creates a favorable internal band alignment for hydrogen evolution. An initial solar-to-hydrogen efficiency of 19.3 % is obtained in acidic electrolyte and an efficiency of 18.5 % is achieved at neutral pH condition (under simulated sunlight).
dc.publisherAmerican Chemical Society (ACS)
dc.titleMonolithic Photoelectrochemical Device for Direct Water Splitting with 19% Efficiency
dc.typeArticle
prism.endingPage1800
prism.issueIdentifier8
prism.publicationDate2018
prism.publicationNameACS Energy Letters
prism.startingPage1795
prism.volume3
dc.identifier.doi10.17863/CAM.32493
rioxxterms.versionofrecord10.1021/acsenergylett.8b00920
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-08-10
dc.contributor.orcidMay, Matthias [0000-0002-1252-806X]
dc.contributor.orcidAtwater, HA [0000-0001-9435-0201]
dc.identifier.eissn2380-8195
dc.publisher.urlhttp://dx.doi.org/10.1021/acsenergylett.8b00920
rioxxterms.typeJournal Article/Review
cam.issuedOnline2018-06-25
rioxxterms.freetoread.startdate2019-08-10


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record