Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163379
Title: Plasmon-enhanced photoresponse of single silver nanowires and their network devices
Authors: Razeghi, Mohammadali
Üstünçelik, Merve
Shabani, Farzan
Demir, Hilmi Volkan
Kasırga, T. Serkan
Keywords: Engineering::Electrical and electronic engineering
Engineering::Materials
Issue Date: 2022
Source: Razeghi, M., Üstünçelik, M., Shabani, F., Demir, H. V. & Kasırga, T. S. (2022). Plasmon-enhanced photoresponse of single silver nanowires and their network devices. Nanoscale Horizons, 7(4), 396-402. https://dx.doi.org/10.1039/d1nh00629k
Journal: Nanoscale Horizons
Abstract: The photo-bolometric effect is critically important in optoelectronic structures and devices employing metallic electrodes with nanoscale features due to heating caused by the plasmonic field enhancement. One peculiar case is individual silver nanowires (Ag NWs) and their networks. Ag NW-networks exhibit excellent thermal, electrical, and mechanical properties, providing a simple yet reliable alternative to common flexible transparent electrode materials used in optoelectronic devices. To date, there have been no reports on the photoresponse of Ag NWs. In this study, we show that single Ag NWs and networks of such Ag NWs possess a significant, intrinsic photoresponse, thanks to the photo-bolometric effect, as directly observed and measured using scanning photocurrent microscopy. Surface plasmon polaritons (SPPs) created at the contact metals or plasmons created at the nanowire-metal structures cause heating at the junctions where a plasmonic field enhancement is possible. The local heating of the Ag NWs results in negative photoconductance due to the bolometric effect. Here an open-circuit response due to the plasmon-enhanced Seebeck effect was recorded at the NW-metal contact junctions. The SPP-assisted bolometric effect is found to be further enhanced by decorating the Ag NWs with Ag nanoparticles. These observations are relevant to the use of metallic nanowires in plasmonic applications in particular and in optoelectronics in general. Our findings may pave the path for plasmonics-enabled sensing without spectroscopic detection.
URI: https://hdl.handle.net/10356/163379
ISSN: 2055-6764
DOI: 10.1039/d1nh00629k
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
School of Materials Science and Engineering 
Research Centres: The Photonics Institute 
Rights: © 2022 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles
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