Show simple item record

dc.contributor.author
Lai, L.-H.
dc.contributor.author
Gomulya, W.
dc.contributor.author
Protesescu, L.
dc.contributor.author
Kovalenko, Maksym V.
dc.contributor.author
Loi, M.A
dc.date.accessioned
2023-07-13T10:32:08Z
dc.date.available
2017-06-11T06:22:46Z
dc.date.available
2023-07-13T10:32:08Z
dc.date.issued
2014-04-28
dc.identifier.issn
1463-9084
dc.identifier.issn
1463-9076
dc.identifier.other
10.1039/c4cp00632a
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/81896
dc.identifier.doi
10.3929/ethz-b-000081896
dc.description.abstract
We report on the fabrication of CdSe quantum dot (QD) sensitized electrodes by direct adsorption of colloidal QDs on mesoporous TiO2 followed by 3-mercaptopropionic acid (MPA) ligand exchange. High efficiency photoelectrochemical hydrogen generation is demonstrated by means of these electrodes. The deposition of ZnS on TiO2/CdSe further improves the external quantum efficiency from 63% to 85% at 440 nm under −0.5 V vs. SCE. Using the same photoelectrodes, solar cells with the internal quantum efficiency approaching 100% are fabricated. The ZnS deposition increases the photocurrent and chemical stability of the electrodes. Investigation of the carrier dynamics of the solar cells shows that ZnS enhances the exciton separation rate in CdSe nanocrystals, which we ascribe to the formation of a type II heterojunction between ZnS and CdSe QDs. This finding is confirmed by the dynamics of the CdSe photoluminescence, which in the presence of ZnS becomes noticeably faster.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
High performance photoelectrochemical hydrogen generation and solar cells with a double type II heterojunction
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2014-02-21
ethz.journal.title
Physical Chemistry Chemical Physics
ethz.journal.volume
16
en_US
ethz.journal.issue
16
en_US
ethz.journal.abbreviated
Phys. Chem. Chem. Phys.
ethz.pages.start
7531
en_US
ethz.pages.end
7537
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
002005974
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
ethz.date.deposited
2017-06-11T06:27:14Z
ethz.source
ECIT
ethz.identifier.importid
imp593651bcea7c447201
ethz.ecitpid
pub:129109
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-12T23:20:05Z
ethz.rosetta.lastUpdated
2024-02-03T01:40:01Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=High%20performance%20photoelectrochemical%20hydrogen%20generation%20and%20solar%20cells%20with%20a%20double%20type%20II%20heterojunction&rft.jtitle=Physical%20Chemistry%20Chemical%20Physics&rft.date=2014-04-28&rft.volume=16&rft.issue=16&rft.spage=7531&rft.epage=7537&rft.issn=1463-9084&1463-9076&rft.au=Lai,%20L.-H.&Gomulya,%20W.&Protesescu,%20L.&Kovalenko,%20Maksym%20V.&Loi,%20M.A&rft.genre=article&rft_id=info:doi/10.1039/c4cp00632a&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record