A Photoelectrochemical Device with Dynamic Interface Energetics: Understanding of Structural and Physical Specificities and Improvement of Performance and Stability
DC Field | Value | Language |
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dc.contributor.author | Jung, Jin-Young | - |
dc.contributor.author | Yu, Jin-Young | - |
dc.contributor.author | Yoon, Sanghwa | - |
dc.contributor.author | Yoo, Bongyoung | - |
dc.contributor.author | Lee, Jung-Ho | - |
dc.date.accessioned | 2021-06-22T11:21:09Z | - |
dc.date.available | 2021-06-22T11:21:09Z | - |
dc.date.created | 2021-01-21 | - |
dc.date.issued | 2018-12 | - |
dc.identifier.issn | 2366-7486 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/5071 | - |
dc.description.abstract | The basic configuration of a photoelectrochemical (PEC) water splitting device contains a semiconductor junction, which separates charge carriers by developing interface energetics. Recently, porous metal oxide/semiconductor junctions have shown that flat-band potentials (V-fb), representing interface energetics, could be dynamically changed with PEC reactions. However, it remains unclear as to what structural and physical specificities of the porous metal oxide induce the dynamic V-fb. Herein, it is demonstrated that the electrolyte permeability and nanocrystal structure of porous NiOx are crucial for the dynamic V-fb in porous NiOx integrated Si photocathodes. A comparison of the dense and porous NiOx with electrolyte impermeable and permeable features, respectively, shows that V-fb changes only in the porous NiOx. The porous NiOx also exhibits a nanocrystal structure and increased V-fb values with a decrease in nanocrystal size. As a result of the increased V-fb, the porous NiOx achieves much higher PEC performance compared to that of the dense NiOx. However, electrolyte permeability causes electrochemical decomposition of the Si component. Thus, a cointegration of the porous and dense NiOx bilayers, which ensures stable PEC operation for 10 h while achieving high potentials of 0.2 V versus reversible hydrogen electrode at a photocurrent of 10 mA cm(-2), is proposed. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | A Photoelectrochemical Device with Dynamic Interface Energetics: Understanding of Structural and Physical Specificities and Improvement of Performance and Stability | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yoo, Bongyoung | - |
dc.contributor.affiliatedAuthor | Lee, Jung-Ho | - |
dc.identifier.doi | 10.1002/adsu.201800083 | - |
dc.identifier.scopusid | 2-s2.0-85069666165 | - |
dc.identifier.wosid | 000452462200001 | - |
dc.identifier.bibliographicCitation | Advanced Sustainable Systems, v.2, no.12, pp.1 - 6 | - |
dc.relation.isPartOf | Advanced Sustainable Systems | - |
dc.citation.title | Advanced Sustainable Systems | - |
dc.citation.volume | 2 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 6 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Green & Sustainable Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | HYDROGEN EVOLUTION | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordAuthor | electrocatalysts | - |
dc.subject.keywordAuthor | hydrogen evolution reaction | - |
dc.subject.keywordAuthor | interface energetics | - |
dc.subject.keywordAuthor | photoelectrochemical cells | - |
dc.subject.keywordAuthor | Si photocathodes | - |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/10.1002/adsu.201800083 | - |
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