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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 2904 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 2897 | - |
dc.citation.title | ACS MATERIALS LETTERS | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Chaule, Sourav | - |
dc.contributor.author | Kang, Jihun | - |
dc.contributor.author | Ghule, Balaji G. | - |
dc.contributor.author | Kim, Hyunmin | - |
dc.contributor.author | Jang, Ji-Hyun | - |
dc.date.accessioned | 2024-07-05T10:05:08Z | - |
dc.date.available | 2024-07-05T10:05:08Z | - |
dc.date.created | 2024-07-04 | - |
dc.date.issued | 2024-07 | - |
dc.description.abstract | We achieved improved photoelectrochemical (PEC) efficiency by inducing strain through substitutional Al3+ doping in hematite, followed by codoping with Ti4+. The substitution of Al3+ for Fe3+ induces local strain within the lattice, reducing interionic distances and thereby enhancing the charge carrier transport properties. However, theoretical findings revealed initially unfavorable formation energy when Al3+ is doped into hematite, leading to significant lattice distortion due to size mismatch and thus limiting PEC activity. Co-doping Al3+ with Ti4+ in Fe2O3 restored the lattice symmetry by alleviating strain, resulting in a favorable formation energy. Additionally, Ti4+ contributes excess electrons, further increasing the electrical conductivity. By leveraging formation energy control through Ti doping, our optimized Al:Ti-Fe2O3 with a cocatalyst exhibited a photocurrent density of 4.00 mA cm(-2) at 1.23 V-RHE, representing a 6.5-fold improvement over Fe2O3 alone. Our study proposes an approach for utilizing Al3+ as a codopant in Fe2O3, which can potentially be extended to other codoped systems. | - |
dc.identifier.bibliographicCitation | ACS MATERIALS LETTERS, v.6, no.7, pp.2897 - 2904 | - |
dc.identifier.doi | 10.1021/acsmaterialslett.4c00700 | - |
dc.identifier.issn | 2639-4979 | - |
dc.identifier.scopusid | 2-s2.0-85196047232 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83033 | - |
dc.identifier.wosid | 001243943700001 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | An Approach to Enhance PEC Water Splitting Performance through Al:Ti Codoping in Hematite (α-Fe2O3) Photoanode: The Effect of Al3+as a Codopant | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELECTRON-TRANSPORT | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | TI | - |
dc.subject.keywordPlus | MECHANISM | - |
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