Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface
In this paper, a thin metasurface perfect absorber based on refractory titanium nitride (TiN) is proposed. The size parameter of the metasurface is investigated based on the finite difference time domain method and transfer matrix method. With only a 15-nm-thick TiN layer inside the silica/TiN/silic...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/5/1092 |
| _version_ | 1797536630728294400 |
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| author | Dewang Huo Xinyan Ma Hang Su Chao Wang Hua Zhao |
| author_facet | Dewang Huo Xinyan Ma Hang Su Chao Wang Hua Zhao |
| author_sort | Dewang Huo |
| collection | DOAJ |
| description | In this paper, a thin metasurface perfect absorber based on refractory titanium nitride (TiN) is proposed. The size parameter of the metasurface is investigated based on the finite difference time domain method and transfer matrix method. With only a 15-nm-thick TiN layer inside the silica/TiN/silica stacks standing on the TiN substrate, the near-perfect absorption throughout the visible regime is realized. The cross-talk between the upper and lower dielectric layers enables the broadening of the absorption peak. After patterning the thin film into a nanodisk array, the resonances from the nanodisk array emerge to broaden the high absorption bandwidth. As a result, the proposed metasurface achieves perfect absorption in the waveband from 400 to 2000 nm with an average absorption of 95% and polarization-insensitivity under the normal incidence. The proposed metasurface maintains average absorbance of 90% up to 50-degree oblique incidence for unpolarized light. Our work shows promising potential in the application of solar energy harvesting and other applications requiring refractory metasurfaces. |
| first_indexed | 2024-03-10T12:02:32Z |
| format | Article |
| id | doaj.art-20e02944d9154b2b946a9a9b2116242d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T12:02:32Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-20e02944d9154b2b946a9a9b2116242d2023-11-21T16:47:04ZengMDPI AGNanomaterials2079-49912021-04-01115109210.3390/nano11051092Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film MetasurfaceDewang Huo0Xinyan Ma1Hang Su2Chao Wang3Hua Zhao4Institute of Modern Optics, Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaInstitute of Modern Optics, Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaInstitute of Modern Optics, Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaInstitute of Modern Optics, Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaInstitute of Modern Optics, Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaIn this paper, a thin metasurface perfect absorber based on refractory titanium nitride (TiN) is proposed. The size parameter of the metasurface is investigated based on the finite difference time domain method and transfer matrix method. With only a 15-nm-thick TiN layer inside the silica/TiN/silica stacks standing on the TiN substrate, the near-perfect absorption throughout the visible regime is realized. The cross-talk between the upper and lower dielectric layers enables the broadening of the absorption peak. After patterning the thin film into a nanodisk array, the resonances from the nanodisk array emerge to broaden the high absorption bandwidth. As a result, the proposed metasurface achieves perfect absorption in the waveband from 400 to 2000 nm with an average absorption of 95% and polarization-insensitivity under the normal incidence. The proposed metasurface maintains average absorbance of 90% up to 50-degree oblique incidence for unpolarized light. Our work shows promising potential in the application of solar energy harvesting and other applications requiring refractory metasurfaces.https://www.mdpi.com/2079-4991/11/5/1092metasurface perfect absorberthin film stacksrefractory materialtitanium nitride |
| spellingShingle | Dewang Huo Xinyan Ma Hang Su Chao Wang Hua Zhao Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface Nanomaterials metasurface perfect absorber thin film stacks refractory material titanium nitride |
| title | Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface |
| title_full | Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface |
| title_fullStr | Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface |
| title_full_unstemmed | Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface |
| title_short | Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface |
| title_sort | broadband absorption based on thin refractory titanium nitride patterned film metasurface |
| topic | metasurface perfect absorber thin film stacks refractory material titanium nitride |
| url | https://www.mdpi.com/2079-4991/11/5/1092 |
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