Realization of electrolyte interface effect on Bi2Te3 implanted flake-like ZnO thin films for understanding the highly stable PEC water splitting under simulated solar light and visible light
DC Field | Value | Language |
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dc.contributor.author | Sreedhar, Adem | - |
dc.contributor.author | Noh, Jin-Seo | - |
dc.date.available | 2021-01-27T01:40:25Z | - |
dc.date.created | 2021-01-27 | - |
dc.date.issued | 2021-01 | - |
dc.identifier.issn | 2053-1591 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/79826 | - |
dc.description.abstract | This study aimed to rationally design the novel Bi2Te3 implanted ZnO (Bi2Te3@ZnO) thin films using simultaneous RF and DC magnetron sputtering technique. Herein, we explored the electrolyte interface effect (0.1 M of KOH, KCl, Na2SO3 and Na2SO4) on ZnO and Bi2Te3@ZnO towards highly stable PEC water splitting activity for the first time. Specifically, morphological evolution and electrolyte ion diffusion properties play a crucial role in realizing the prolonged charge carrier lifetime. Moreover, Bi2Te3@ZnO is highlighted with unique nanocone-shaped morphology compared to flake-like ZnO. Also, constructive interfacial interaction was observed between Bi2Te3 and ZnO. As a result, Bi2Te3@ZnO demonstrated superior and highly stable photocurrents in the KOH electrolyte compared to KCl, Na2SO3 and Na2SO4 electrolytes. Precisely, Bi2Te3@ZnO triumphed highly stable photocurrents about 7.93 x 10(-4) A cm(-2) compared to ZnO (6.02 x 10(-4)) at +0.4 V under solar light in KOH electrolyte. Accordingly, Bi2Te3@ZnO achieved remarkable photoconversion efficiency (eta) about 0.65 %, which is enabled by the strengthened intimate interaction between Bi2Te3 and ZnO. Furthermore, we compared the PEC activity under visible light (UV cut-off solar light). These results highlighted that the photoconversion efficiency difference between Bi2Te3@ZnO and ZnO (about 4 times) under visible light is relatively higher than solar light (1.3 times) in KOH. Thus, we proposed different charge carrier generation mechanisms of Bi2Te3@ZnO under solar and visible light. Therefore, intimate interfacial interaction, surface modification, ion diffusion and photoelectrode-electrolyte interaction are key parameters to enhance the PEC activity. Overall, rational design of the transition metal oxide/thermoelectric material interface using Bi2Te3@ZnO composite paves a new path towards highly stable photoanode during PEC water splitting activity in the KOH electrolyte environment. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.relation.isPartOf | MATERIALS RESEARCH EXPRESS | - |
dc.title | Realization of electrolyte interface effect on Bi2Te3 implanted flake-like ZnO thin films for understanding the highly stable PEC water splitting under simulated solar light and visible light | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000607466600001 | - |
dc.identifier.doi | 10.1088/2053-1591/abd787 | - |
dc.identifier.bibliographicCitation | MATERIALS RESEARCH EXPRESS, v.8, no.1 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85100147541 | - |
dc.citation.title | MATERIALS RESEARCH EXPRESS | - |
dc.citation.volume | 8 | - |
dc.citation.number | 1 | - |
dc.contributor.affiliatedAuthor | Sreedhar, Adem | - |
dc.contributor.affiliatedAuthor | Noh, Jin-Seo | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | thin films | - |
dc.subject.keywordAuthor | Intimate interface interaction | - |
dc.subject.keywordAuthor | Ionic conductivity | - |
dc.subject.keywordAuthor | ZnO | - |
dc.subject.keywordAuthor | Bi2Te3 | - |
dc.subject.keywordAuthor | PEC activity | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | IMPROVE | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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