Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film
Perfect absorbers have been extensively investigated due to their significant value in solar cell, photodetection, and stealth technologies. Various subwavelength structures have been proposed to improve the absorption performances, such as high absorptance, broad band, and wide absorption angle. Ho...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/7/3/57 |
| _version_ | 1797559851597955072 |
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| author | Lei Zhang Kun Wang Hui Chen Yanpeng Zhang |
| author_facet | Lei Zhang Kun Wang Hui Chen Yanpeng Zhang |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | Perfect absorbers have been extensively investigated due to their significant value in solar cell, photodetection, and stealth technologies. Various subwavelength structures have been proposed to improve the absorption performances, such as high absorptance, broad band, and wide absorption angle. However, excellent performances usually put forward higher requirements on structural designs, such as varying the geometry sizes or shapes to fit different center wavelengths, which inevitably increases the fabrication burden. Here, a planar sandwich structure involving a layer of highly lossy material is proposed to achieve a robust perfect absorption with 95% absorptance ranging from the visible to near infrared range. Such an excellent absorption performance is also polarization-independent and applicable to a wide incident angle. Furthermore, the proposed design can also be applied to conformal surfaces with a 90% fluctuation over a steep surface. We believe that the proposed perfect absorber with distinguished performances can find wide application. |
| first_indexed | 2024-03-10T17:52:05Z |
| format | Article |
| id | doaj.art-aec30afe88b34320be90703def8bffdd |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T17:52:05Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-aec30afe88b34320be90703def8bffdd2023-11-20T09:20:20ZengMDPI AGPhotonics2304-67322020-08-01735710.3390/photonics7030057Robust Conformal Perfect Absorber Involving Lossy Ultrathin FilmLei Zhang0Kun Wang1Hui Chen2Yanpeng Zhang3Key Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaKey Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaKey Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaKey Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaPerfect absorbers have been extensively investigated due to their significant value in solar cell, photodetection, and stealth technologies. Various subwavelength structures have been proposed to improve the absorption performances, such as high absorptance, broad band, and wide absorption angle. However, excellent performances usually put forward higher requirements on structural designs, such as varying the geometry sizes or shapes to fit different center wavelengths, which inevitably increases the fabrication burden. Here, a planar sandwich structure involving a layer of highly lossy material is proposed to achieve a robust perfect absorption with 95% absorptance ranging from the visible to near infrared range. Such an excellent absorption performance is also polarization-independent and applicable to a wide incident angle. Furthermore, the proposed design can also be applied to conformal surfaces with a 90% fluctuation over a steep surface. We believe that the proposed perfect absorber with distinguished performances can find wide application.https://www.mdpi.com/2304-6732/7/3/57perfect absorberlossyepsilon-near-zero materialconformal surface |
| spellingShingle | Lei Zhang Kun Wang Hui Chen Yanpeng Zhang Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film Photonics perfect absorber lossy epsilon-near-zero material conformal surface |
| title | Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film |
| title_full | Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film |
| title_fullStr | Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film |
| title_full_unstemmed | Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film |
| title_short | Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film |
| title_sort | robust conformal perfect absorber involving lossy ultrathin film |
| topic | perfect absorber lossy epsilon-near-zero material conformal surface |
| url | https://www.mdpi.com/2304-6732/7/3/57 |
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