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Title: Electrically tunable all-PCM visible plasmonics
Authors: Sreekanth, Kandammathe Valiyaveedu
Medwal, Rohit
Das, Chandreyee Manas6
Gupta, Manoj
Mishra, Mayank
Yong, Ken-Tye
Rawat, Rajdeep Singh
Singh, Ranjan
Keywords: Science::Physics
Issue Date: 2021
Source: Sreekanth, K. V., Medwal, R., Das, C. M., Gupta, M., Mishra, M., Yong, K., Rawat, R. S. & Singh, R. (2021). Electrically tunable all-PCM visible plasmonics. Nano Letters, 21(9), 4044-4050.
Project: A18A5b0056
Journal: Nano Letters 
Abstract: The realization of electrically tunable plasmonic resonances in the ultraviolet (UV) to visible spectral band is particularly important for active nanophotonic device applications. However, the plasmonic resonances in the UV to visible wavelength range cannot be tuned due to the lack of tunable plasmonic materials. Here, we experimentally demonstrate tunable plasmonic resonances at visible wavelengths using a chalcogenide semiconductor alloy such as antimony telluride (Sb2Te3), by switching the structural phase of Sb2Te3 from amorphous to crystalline. We demonstrate the excitation of a propagating surface plasmon with a high plasmonic figure of merit in both amorphous and crystalline phases of Sb2Te3 thin films. We show polarization-dependent and -independent plasmonic resonances by fabricating one and two-dimensional periodic nanostructures in Sb2Te3 thin films, respectively. Moreover, we demonstrate electrically tunable plasmonic resonances using a microheater integrated with the Sb2Te3/Si device. The developed electrically tunable Sb2Te3-based plasmonic devices could find applications in the development of active color filters.
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.1c00941
DOI (Related Dataset): 10.21979/N9/4JPHRK
Schools: School of Physical and Mathematical Sciences 
School of Electrical and Electronic Engineering 
Organisations: Agency for Science, Technology and Research (A*STAR)
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
The Photonics Institute 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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