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DC Field | Value | Language |
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dc.contributor.author | Patel, Malkeshkumar | - |
dc.contributor.author | Nguyen, Thanh Tai | - |
dc.contributor.author | Kim, Jina | - |
dc.contributor.author | Kim, Joondong | - |
dc.contributor.author | Kim, Yu Kwon | - |
dc.date.issued | 2022-05-01 | - |
dc.identifier.issn | 2452-2627 | - |
dc.identifier.uri | https://aurora.ajou.ac.kr/handle/2018.oak/32625 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85127333297&origin=inward | - |
dc.description.abstract | Earth-abundant two-dimensional (2D) materials-based photocathodes for solar hydrogen production may replace conventional noble metal-based ones when they can be grown with a proper orientation and dimension for efficient charge transfer and catalytic reactions. Here, we show that WS2 films can be grown as wafer-scale films with unique vertically aligned 2H-WS2 nanoplatelets using a single-step vacuum deposition process directly on substrates such as Si wafer and F-doped tin oxide (FTO)/glass. The as-grown WS2/p-Si shows enhanced photocathode performances that are attributed to the unique vertical WS2 nanoplatelet structure, which endows excellent antireflection properties (reflectance as low as ∼ 4%) for enhanced absorption, high photocurrent density (ca. 37 mA cm−2) at low overpotential optimized by controlled vertical length, and catalytically active WS2 edge-sites exposed to the surface for excellent catalytic hydrogen evolution reaction (HER). The results suggest that the nanostructured WS2/p-Si heterostructures are promising multi-functional photocathodes for solar hydrogen production with excellent stability for long-term operation in ambient condition. | - |
dc.description.sponsorship | This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF- 2020R1A2C1009480 , NRF- 2020R1I1A1A01068573 , NRF- 2020H1D3A2A02085884 , NRF- 2020R1A2C1007227 and NRF- 2021R1A6A1A10044950 ). | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.title | WS2/p-Si-based photocathodes with high activity originated from the unique vertical geometry of the 2D WS2 nanoplatelets | - |
dc.type | Article | - |
dc.citation.title | FlatChem | - |
dc.citation.volume | 33 | - |
dc.identifier.bibliographicCitation | FlatChem, Vol.33 | - |
dc.identifier.doi | 10.1016/j.flatc.2022.100361 | - |
dc.identifier.scopusid | 2-s2.0-85127333297 | - |
dc.identifier.url | https://www.journals.elsevier.com/flatchem | - |
dc.subject.keyword | Edge exposed electrocatalyst | - |
dc.subject.keyword | Solar hydrogen generation | - |
dc.subject.keyword | Water splitting | - |
dc.subject.keyword | WS2 nanoplatelets | - |
dc.subject.keyword | WS2/p-Si photocathode | - |
dc.type.other | Article | - |
dc.description.isoa | false | - |
dc.subject.subarea | Electronic, Optical and Magnetic Materials | - |
dc.subject.subarea | Ceramics and Composites | - |
dc.subject.subarea | Surfaces, Coatings and Films | - |
dc.subject.subarea | Materials Chemistry | - |
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