Interband plasmonic nanoresonators for enhanced thermoelectric photodetection
Thermoelectric photodetectors are robust alternatives to photodiodes with applications in extreme environments; however, the poor absorptivity of thermoelectric materials limits their photosensitivity. Here, we take a new look at the traditional thermoelectric materials Sb2Te3 and Bi2Te3 in their re...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-03-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0752 |
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| author | Zamiri Golnoush Wredh Simon Rahman Md Abdur Adanan Nur Qalishah Vu Cam Nhung Wang Hongtao Arora Deepshikha Sugiyama Haruya Kubo Wakana Dong Zhaogang Simpson Robert E. Yang Joel K.W. |
| author_facet | Zamiri Golnoush Wredh Simon Rahman Md Abdur Adanan Nur Qalishah Vu Cam Nhung Wang Hongtao Arora Deepshikha Sugiyama Haruya Kubo Wakana Dong Zhaogang Simpson Robert E. Yang Joel K.W. |
| author_sort | Zamiri Golnoush |
| collection | DOAJ |
| description | Thermoelectric photodetectors are robust alternatives to photodiodes with applications in extreme environments; however, the poor absorptivity of thermoelectric materials limits their photosensitivity. Here, we take a new look at the traditional thermoelectric materials Sb2Te3 and Bi2Te3 in their recently discovered ability to support interband plasmonic resonances in the visible spectrum. We fabricated nanoresonators directly into the thermoelectric materials to improve their optical absorptance through plasmonic field enhancements, leading to improved photo-thermoelectric conversion. A thermoelectric detector with Sb2Te3 and Bi2Te3 nanostructures demonstrated ∼90 % optical absorptance across the visible spectrum, more than twice that of unpatterned materials. The solid-state device was fabricated on a substrate and exhibited a response time of 160 µs and a specific detectivity of 3.2×106cm Hz12W−1
$\left.3.2{\times}1{0}^{6} \text{cm\,H}{\text{z}}^{1/\right.2} {\text{W}}^{-1}$
. Our demonstration that plasmonic and thermoelectric properties can be exploited within the same material could advance photodetectors and other optoelectronic technologies, such as biosensors, solar cells, and integrated spectrometers. |
| format | Article |
| id | doaj-art-61d788c0fae24419aafc2e1ddde4f77f |
| institution | OA Journals |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-61d788c0fae24419aafc2e1ddde4f77f2025-08-20T02:11:11ZengDe GruyterNanophotonics2192-86142025-03-011491365137310.1515/nanoph-2024-0752Interband plasmonic nanoresonators for enhanced thermoelectric photodetectionZamiri Golnoush0Wredh Simon1Rahman Md Abdur2Adanan Nur Qalishah3Vu Cam Nhung4Wang Hongtao5Arora Deepshikha6Sugiyama Haruya7Kubo Wakana8Dong Zhaogang9Simpson Robert E.10Yang Joel K.W.11Singapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeTokyo University of Agriculture and Technology, Faculty of Engineering, Koganei, Tokyo, JapanTokyo University of Agriculture and Technology, Faculty of Engineering, Koganei, Tokyo, JapanSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeSchool of Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKSingapore University of Technology and Design, 8 Somapah Road, Singapore487372, SingaporeThermoelectric photodetectors are robust alternatives to photodiodes with applications in extreme environments; however, the poor absorptivity of thermoelectric materials limits their photosensitivity. Here, we take a new look at the traditional thermoelectric materials Sb2Te3 and Bi2Te3 in their recently discovered ability to support interband plasmonic resonances in the visible spectrum. We fabricated nanoresonators directly into the thermoelectric materials to improve their optical absorptance through plasmonic field enhancements, leading to improved photo-thermoelectric conversion. A thermoelectric detector with Sb2Te3 and Bi2Te3 nanostructures demonstrated ∼90 % optical absorptance across the visible spectrum, more than twice that of unpatterned materials. The solid-state device was fabricated on a substrate and exhibited a response time of 160 µs and a specific detectivity of 3.2×106cm Hz12W−1 $\left.3.2{\times}1{0}^{6} \text{cm\,H}{\text{z}}^{1/\right.2} {\text{W}}^{-1}$ . Our demonstration that plasmonic and thermoelectric properties can be exploited within the same material could advance photodetectors and other optoelectronic technologies, such as biosensors, solar cells, and integrated spectrometers.https://doi.org/10.1515/nanoph-2024-0752plasmonic nanoresonatorsthermoelectric photodetectorinterband plasmonicsphoto-thermoelectric effectcascaded device |
| spellingShingle | Zamiri Golnoush Wredh Simon Rahman Md Abdur Adanan Nur Qalishah Vu Cam Nhung Wang Hongtao Arora Deepshikha Sugiyama Haruya Kubo Wakana Dong Zhaogang Simpson Robert E. Yang Joel K.W. Interband plasmonic nanoresonators for enhanced thermoelectric photodetection Nanophotonics plasmonic nanoresonators thermoelectric photodetector interband plasmonics photo-thermoelectric effect cascaded device |
| title | Interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| title_full | Interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| title_fullStr | Interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| title_full_unstemmed | Interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| title_short | Interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| title_sort | interband plasmonic nanoresonators for enhanced thermoelectric photodetection |
| topic | plasmonic nanoresonators thermoelectric photodetector interband plasmonics photo-thermoelectric effect cascaded device |
| url | https://doi.org/10.1515/nanoph-2024-0752 |
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