Mirror-backed Dark Alumina: A Nearly Perfect Absorber for Thermoelectronics and Thermophotovotaics

Handle URI:
http://hdl.handle.net/10754/595302
Title:
Mirror-backed Dark Alumina: A Nearly Perfect Absorber for Thermoelectronics and Thermophotovotaics
Authors:
Farhat, Mohamed; Cheng, Tsung-Chieh; Le, Khai. Q.; Cheng, Mark Ming-Cheng; Bagci, Hakan ( 0000-0003-3867-5786 ) ; Chen, Pai-Yen
Abstract:
We present here a broadband, wide-angle, and polarization-independent nearly perfect absorber consisting of mirror-backed nanoporous alumina. By electrochemically anodizing the disordered multicomponent aluminum and properly tailoring the thickness and air-filling fraction of nanoporous alumina, according to the Maxwell-Garnet mixture theory, a large-area dark alumina can be made with excellent photothermal properties and absorption larger than 93% over a wide wavelength range spanning from near-infrared to ultraviolet light, i.e. 250 nm–2500 nm. The measured absorption is orders of magnitude greater than other reported anodized porous alumina, typically semi-transparent at similar wavelengths. This simple yet effective approach, however, does not require any lithography, nano-mixture deposition, pre- and post-treatment. Here, we also envisage and theoretically investigate the practical use of proposed absorbers and/or photothermal converters in integrated thermoelectronic and/or thermophotovoltaic energy conversion devices, which make efficient use of the entire spectrum of ambient visible to near-infrared radiation.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Mirror-backed Dark Alumina: A Nearly Perfect Absorber for Thermoelectronics and Thermophotovotaics 2016, 6:19984 Scientific Reports
Publisher:
Nature Publishing Group
Journal:
Scientific Reports
Issue Date:
28-Jan-2016
DOI:
10.1038/srep19984
Type:
Article
ISSN:
2045-2322
Additional Links:
http://www.nature.com/articles/srep19984
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorFarhat, Mohameden
dc.contributor.authorCheng, Tsung-Chiehen
dc.contributor.authorLe, Khai. Q.en
dc.contributor.authorCheng, Mark Ming-Chengen
dc.contributor.authorBagci, Hakanen
dc.contributor.authorChen, Pai-Yenen
dc.date.accessioned2016-01-31T14:49:12Zen
dc.date.available2016-01-31T14:49:12Zen
dc.date.issued2016-01-28en
dc.identifier.citationMirror-backed Dark Alumina: A Nearly Perfect Absorber for Thermoelectronics and Thermophotovotaics 2016, 6:19984 Scientific Reportsen
dc.identifier.issn2045-2322en
dc.identifier.doi10.1038/srep19984en
dc.identifier.urihttp://hdl.handle.net/10754/595302en
dc.description.abstractWe present here a broadband, wide-angle, and polarization-independent nearly perfect absorber consisting of mirror-backed nanoporous alumina. By electrochemically anodizing the disordered multicomponent aluminum and properly tailoring the thickness and air-filling fraction of nanoporous alumina, according to the Maxwell-Garnet mixture theory, a large-area dark alumina can be made with excellent photothermal properties and absorption larger than 93% over a wide wavelength range spanning from near-infrared to ultraviolet light, i.e. 250 nm–2500 nm. The measured absorption is orders of magnitude greater than other reported anodized porous alumina, typically semi-transparent at similar wavelengths. This simple yet effective approach, however, does not require any lithography, nano-mixture deposition, pre- and post-treatment. Here, we also envisage and theoretically investigate the practical use of proposed absorbers and/or photothermal converters in integrated thermoelectronic and/or thermophotovoltaic energy conversion devices, which make efficient use of the entire spectrum of ambient visible to near-infrared radiation.en
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.urlhttp://www.nature.com/articles/srep19984en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.titleMirror-backed Dark Alumina: A Nearly Perfect Absorber for Thermoelectronics and Thermophotovotaicsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalScientific Reportsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Mechanical Engineering, National Kaohsiung University of Applied Science (KUAS), Kaohsiung 80778, Taiwan, Republic of Chinaen
dc.contributor.institutionDepartment of Electrical Engineering, University of Minnesota, Duluth, Minnesota 55812, USAen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorFarhat, Mohameden
kaust.authorBagci, Hakanen
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