Laterally assembled nanowires for ultrathin broadband solar absorbers
DC Field | Value | Language |
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dc.contributor.author | Song, Kyung-Deok | - |
dc.contributor.author | Kempa, Thomas J. | - |
dc.contributor.author | Park, Hong-Gyu | - |
dc.contributor.author | Kim, Sun-Kyung | - |
dc.date.accessioned | 2021-09-05T08:56:17Z | - |
dc.date.available | 2021-09-05T08:56:17Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-05-05 | - |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98541 | - |
dc.description.abstract | We studied optical resonances in laterally oriented Si nanowire arrays by conducting finite-difference time-domain simulations. Localized Fabry-Perot and whispering-gallery modes are supported within the cross section of each nanowire in the array and result in broadband light absorption. Comparison of a nanowire array with a single nanowire shows that the current density (J(SC)) is preserved for a range of nanowire morphologies. The J(SC) of a nanowire array depends on the spacing of its constituent nanowires, which indicates that both diffraction and optical antenna effects contribute to light absorption. Furthermore, a vertically stacked nanowire array exhibits significantly enhanced light absorption because of the emergence of coupled cavity-waveguide modes and the mitigation of a screening effect. With the assumption of unity internal quantum efficiency, the J(SC) of an 800-nm-thick cross-stacked nanowire array is 14.0 mA/cm(2), which yields a similar to 60% enhancement compared with an equivalent bulk film absorber. These numerical results underpin a rational design strategy for ultrathin solar absorbers based on assembled nanowire cavities. (C)2014 Optical Society of America | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | OPTICAL SOC AMER | - |
dc.subject | SHELL SILICON NANOWIRES | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | OPTICAL ANTENNA | - |
dc.subject | PHOTOVOLTAIC DEVICES | - |
dc.subject | CELLS | - |
dc.subject | ABSORPTION | - |
dc.subject | DESIGN | - |
dc.subject | LASERS | - |
dc.subject | HETEROSTRUCTURES | - |
dc.subject | ELECTRODES | - |
dc.title | Laterally assembled nanowires for ultrathin broadband solar absorbers | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Hong-Gyu | - |
dc.identifier.doi | 10.1364/OE.22.00A992 | - |
dc.identifier.scopusid | 2-s2.0-84899802825 | - |
dc.identifier.wosid | 000335905300040 | - |
dc.identifier.bibliographicCitation | OPTICS EXPRESS, v.22, no.9, pp.A992 - A1000 | - |
dc.relation.isPartOf | OPTICS EXPRESS | - |
dc.citation.title | OPTICS EXPRESS | - |
dc.citation.volume | 22 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | A992 | - |
dc.citation.endPage | A1000 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.subject.keywordPlus | SHELL SILICON NANOWIRES | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | OPTICAL ANTENNA | - |
dc.subject.keywordPlus | PHOTOVOLTAIC DEVICES | - |
dc.subject.keywordPlus | CELLS | - |
dc.subject.keywordPlus | ABSORPTION | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | LASERS | - |
dc.subject.keywordPlus | HETEROSTRUCTURES | - |
dc.subject.keywordPlus | ELECTRODES | - |
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