Photo-thermoelectric conversion of plasmonic nanohole array
Photo-thermoelectric conversion of plasmonic nanohole array
Plasmonic photo-thermoelectric conversion offers an alternative photodetection mechanism that is not restricted by semiconductor bandgaps. Here, we report a plasmonic photodetector consisting of an ultra-thin silver film with nanohole array, whose photodetection mechanism is based on thermoelectric conversion triggered by plasmonic local heating. The detector exhibits a maximum photocurrent at the wavelength of the surface plasmon polaritons, determined by the periodicity of the nanoholes. Hence, the response wavelength of the detector can be controlled via the morphological parameters of the nanohole pattern. The contribution of plasmonic local heating to thermoelectric conversion is verified experimentally and numerically, enabling discussion on the mechanisms governing light detection. These results provide a starting point for the development of other nanoscale photodetectors.
Nanohole, Photodetector, Plasmon, Plasmonic local heat, Silver film, Thermoelectric conversion
Miwa, Kaito
ce0dac89-56ff-469b-b4ef-53ffdac96aca
Ebihara, Hiroki
031378d8-8bd7-4d6f-92a8-9b96ff1ea474
Fang, Xu
96b4b212-496b-4d68-82a4-06df70f94a86
Kubo, Wakana
453b4e5c-4481-48b5-8f84-ca30ca2224e4
13 April 2020
Miwa, Kaito
ce0dac89-56ff-469b-b4ef-53ffdac96aca
Ebihara, Hiroki
031378d8-8bd7-4d6f-92a8-9b96ff1ea474
Fang, Xu
96b4b212-496b-4d68-82a4-06df70f94a86
Kubo, Wakana
453b4e5c-4481-48b5-8f84-ca30ca2224e4
Miwa, Kaito, Ebihara, Hiroki, Fang, Xu and Kubo, Wakana
(2020)
Photo-thermoelectric conversion of plasmonic nanohole array.
Applied Sciences, 10 (8), [2681].
(doi:10.3390/app10082681).
Abstract
Plasmonic photo-thermoelectric conversion offers an alternative photodetection mechanism that is not restricted by semiconductor bandgaps. Here, we report a plasmonic photodetector consisting of an ultra-thin silver film with nanohole array, whose photodetection mechanism is based on thermoelectric conversion triggered by plasmonic local heating. The detector exhibits a maximum photocurrent at the wavelength of the surface plasmon polaritons, determined by the periodicity of the nanoholes. Hence, the response wavelength of the detector can be controlled via the morphological parameters of the nanohole pattern. The contribution of plasmonic local heating to thermoelectric conversion is verified experimentally and numerically, enabling discussion on the mechanisms governing light detection. These results provide a starting point for the development of other nanoscale photodetectors.
Text
Photo-Thermoelectric Conversion of Plasmonic Nanohole Array_XF
- Accepted Manuscript
More information
Accepted/In Press date: 7 April 2020
Published date: 13 April 2020
Additional Information:
Funding Information:
This research was fully supported by the Casio Science Promotion Foundation, The Sumitomo Foundation, and the JSPS-Royal Society bilateral joint research program; and was partially supported by the JSPS Core-to-Core Program. The authors are grateful to James Frame for supporting simulations.
Publisher Copyright:
© 2020 by the authors.
Keywords:
Nanohole, Photodetector, Plasmon, Plasmonic local heat, Silver film, Thermoelectric conversion
Identifiers
Local EPrints ID: 443870
URI: http://eprints.soton.ac.uk/id/eprint/443870
ISSN: 2076-3417
PURE UUID: fa9355ab-a35a-47d4-94e8-3e0b154282fa
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Date deposited: 15 Sep 2020 16:34
Last modified: 17 Mar 2024 03:29
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Contributors
Author:
Kaito Miwa
Author:
Hiroki Ebihara
Author:
Xu Fang
Author:
Wakana Kubo
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