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DC Field | Value | Language |
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dc.citation.endPage | 2532 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 2527 | - |
dc.citation.title | NANO LETTERS | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Dan, Yaping | - |
dc.contributor.author | Seo, Kwanyong | - |
dc.contributor.author | Takei, Kuniharu | - |
dc.contributor.author | Meza, Jhim H. | - |
dc.contributor.author | Javey, Ali | - |
dc.contributor.author | Crozier, Kenneth B. | - |
dc.date.accessioned | 2023-12-22T06:08:54Z | - |
dc.date.available | 2023-12-22T06:08:54Z | - |
dc.date.created | 2015-07-22 | - |
dc.date.issued | 2011-06 | - |
dc.description.abstract | Nanowires have unique optical properties(1-4) and are considered as important building blocks for energy harvesting applications such as solar cells.(2,5-8) However, due to their large surface-to-volume ratios, the recombination of charge carriers through surface states reduces the carrier diffusion lengths in nanowires a few orders of magnitude,(9) often resulting in the low efficiency (a few percent or less) of nanowire-based solar cells.(7,8,10,11) Reducing the recombination by surface passivation is crucial for the realization of high-performance nanosized optoelectronic devices but remains largely unexplored.(7,12-14) Here we show that a thin layer of amorphous silicon (a-Si) coated on a single-crystalline silicon nanowire, forming a core shell structure in situ in the vapor-liquid-solid process, reduces the surface recombination nearly 2 orders of magnitude. Under illumination of modulated light, we measure a greater than 90-fold improvement in the photosensitivity of individual core-shell nanowires, compared to regular nanowires without shell. Simulations of the optical absorption of the nanowires indicate that the strong absorption of the a-Si shell contributes to this effect, but we conclude that the effect is mainly due to the enhanced carrier lifetime by surface passivation | - |
dc.identifier.bibliographicCitation | NANO LETTERS, v.11, no.6, pp.2527 - 2532 | - |
dc.identifier.doi | 10.1021/nl201179n | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.scopusid | 2-s2.0-79958834879 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12228 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/nl201179n | - |
dc.identifier.wosid | 000291322600058 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title.alternative | Dramatic Reduction of Surface Recombination by in Situ Surface Passivation of Silicon Nanowires | - |
dc.title | Dramatic Reduction of Surface Recombination by in Situ Surface Passivation of Silicon Nanowires | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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