Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy.
Identifieur interne : 000474 ( Main/Exploration ); précédent : 000473; suivant : 000475Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy.
Auteurs : RBID : pubmed:23799779English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Gallium, Indium, Water.
- chemistry : Nanowires.
- Electrochemical Techniques, Mass Spectrometry, Particle Size, Photochemical Processes, Surface Properties.
Abstract
We investigated the photoelectrochemical properties of both n- and p-type (In,Ga)N nanowires (NWs) for water splitting by in situ electrochemical mass spectroscopy (EMS). All NWs were prepared by plasma-assisted molecular beam epitaxy. Under illumination, the n-(In,Ga)N NWs exhibited an anodic photocurrent, however, no O2 but only N2 evolution was detected by EMS, indicating that the photocurrent was related to photocorrosion rather than water oxidation. In contrast, the p-(In,Ga)N NWs showed a cathodic photocurrent under illumination which was correlated with the evolution of H2. After photodeposition of Pt on such NWs, the photocurrent density was significantly enhanced to 5 mA/cm(2) at a potential of -0.5 V/NHE under visible light irradiation of ∼40 mW/cm(2). Also, incident photon-to-current conversion efficiencies of around 40% were obtained at -0.45 V/NHE across the entire visible spectral region. The stability of the NW photocathodes for at least 60 min was verified by EMS. These results suggest that p-(In,Ga)N NWs are a promising basis for solar hydrogen production.
DOI: 10.1021/ja404043k
PubMed: 23799779
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy.</title><author><name sortKey="Kamimura, Jumpei" uniqKey="Kamimura J">Jumpei Kamimura</name><affiliation wicri:level="3"><nlm:affiliation>Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany. kamimura@pdi-berlin.de</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin</wicri:regionArea><placeName><region type="land" nuts="3">Berlin</region><settlement type="city">Berlin</settlement></placeName></affiliation></author><author><name sortKey="Bogdanoff, Peter" uniqKey="Bogdanoff P">Peter Bogdanoff</name></author><author><name sortKey="L Hnemann, Jonas" uniqKey="L Hnemann J">Jonas Lähnemann</name></author><author><name sortKey="Hauswald, Christian" uniqKey="Hauswald C">Christian Hauswald</name></author><author><name sortKey="Geelhaar, Lutz" uniqKey="Geelhaar L">Lutz Geelhaar</name></author><author><name sortKey="Fiechter, Sebastian" uniqKey="Fiechter S">Sebastian Fiechter</name></author><author><name sortKey="Riechert, Henning" uniqKey="Riechert H">Henning Riechert</name></author></titleStmt><publicationStmt><date when="2013">2013</date><idno type="doi">10.1021/ja404043k</idno><idno type="RBID">pubmed:23799779</idno><idno type="pmid">23799779</idno><idno type="wicri:Area/Main/Corpus">000557</idno><idno type="wicri:Area/Main/Curation">000557</idno><idno type="wicri:Area/Main/Exploration">000474</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Electrochemical Techniques</term><term>Gallium (chemistry)</term><term>Indium (chemistry)</term><term>Mass Spectrometry</term><term>Nanowires (chemistry)</term><term>Particle Size</term><term>Photochemical Processes</term><term>Surface Properties</term><term>Water (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Gallium</term><term>Indium</term><term>Water</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanowires</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrochemical Techniques</term><term>Mass Spectrometry</term><term>Particle Size</term><term>Photochemical Processes</term><term>Surface Properties</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We investigated the photoelectrochemical properties of both n- and p-type (In,Ga)N nanowires (NWs) for water splitting by in situ electrochemical mass spectroscopy (EMS). All NWs were prepared by plasma-assisted molecular beam epitaxy. Under illumination, the n-(In,Ga)N NWs exhibited an anodic photocurrent, however, no O2 but only N2 evolution was detected by EMS, indicating that the photocurrent was related to photocorrosion rather than water oxidation. In contrast, the p-(In,Ga)N NWs showed a cathodic photocurrent under illumination which was correlated with the evolution of H2. After photodeposition of Pt on such NWs, the photocurrent density was significantly enhanced to 5 mA/cm(2) at a potential of -0.5 V/NHE under visible light irradiation of ∼40 mW/cm(2). Also, incident photon-to-current conversion efficiencies of around 40% were obtained at -0.45 V/NHE across the entire visible spectral region. The stability of the NW photocathodes for at least 60 min was verified by EMS. These results suggest that p-(In,Ga)N NWs are a promising basis for solar hydrogen production.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">23799779</PMID><DateCreated><Year>2013</Year><Month>07</Month><Day>18</Day></DateCreated><DateCompleted><Year>2014</Year><Month>02</Month><Day>13</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-5126</ISSN><JournalIssue CitedMedium="Internet"><Volume>135</Volume><Issue>28</Issue><PubDate><Year>2013</Year><Month>Jul</Month><Day>17</Day></PubDate></JournalIssue><Title>Journal of the American Chemical Society</Title><ISOAbbreviation>J. Am. Chem. Soc.</ISOAbbreviation></Journal><ArticleTitle>Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy.</ArticleTitle><Pagination><MedlinePgn>10242-5</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/ja404043k</ELocationID><Abstract><AbstractText>We investigated the photoelectrochemical properties of both n- and p-type (In,Ga)N nanowires (NWs) for water splitting by in situ electrochemical mass spectroscopy (EMS). All NWs were prepared by plasma-assisted molecular beam epitaxy. Under illumination, the n-(In,Ga)N NWs exhibited an anodic photocurrent, however, no O2 but only N2 evolution was detected by EMS, indicating that the photocurrent was related to photocorrosion rather than water oxidation. In contrast, the p-(In,Ga)N NWs showed a cathodic photocurrent under illumination which was correlated with the evolution of H2. After photodeposition of Pt on such NWs, the photocurrent density was significantly enhanced to 5 mA/cm(2) at a potential of -0.5 V/NHE under visible light irradiation of ∼40 mW/cm(2). Also, incident photon-to-current conversion efficiencies of around 40% were obtained at -0.45 V/NHE across the entire visible spectral region. The stability of the NW photocathodes for at least 60 min was verified by EMS. These results suggest that p-(In,Ga)N NWs are a promising basis for solar hydrogen production.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kamimura</LastName><ForeName>Jumpei</ForeName><Initials>J</Initials><Affiliation>Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany. kamimura@pdi-berlin.de</Affiliation></Author><Author ValidYN="Y"><LastName>Bogdanoff</LastName><ForeName>Peter</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Lähnemann</LastName><ForeName>Jonas</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Hauswald</LastName><ForeName>Christian</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Geelhaar</LastName><ForeName>Lutz</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Fiechter</LastName><ForeName>Sebastian</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Riechert</LastName><ForeName>Henning</ForeName><Initials>H</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2013</Year><Month>07</Month><Day>01</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Am Chem Soc</MedlineTA><NlmUniqueID>7503056</NlmUniqueID><ISSNLinking>0002-7863</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>gallium nitride</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>indium nitride</NameOfSubstance></Chemical><Chemical><RegistryNumber>045A6V3VFX</RegistryNumber><NameOfSubstance>Indium</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance>Water</NameOfSubstance></Chemical><Chemical><RegistryNumber>CH46OC8YV4</RegistryNumber><NameOfSubstance>Gallium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Electrochemical Techniques</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Gallium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Indium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Mass Spectrometry</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Nanowires</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Particle Size</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Photochemical Processes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Surface Properties</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Water</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2013</Year><Month>7</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>6</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>6</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>2</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/ja404043k</ArticleId><ArticleId IdType="pubmed">23799779</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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