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Stoichiometric engineering of chalcogenide semiconductor alloys for nanophotonic applications

Stoichiometric engineering of chalcogenide semiconductor alloys for nanophotonic applications
Stoichiometric engineering of chalcogenide semiconductor alloys for nanophotonic applications
A variety of alternative plasmonic and dielectric material platforms – among them nitrides, semiconductors and conductive oxides - have come to prominence in recent years as means to address the shortcomings of noble metals (including Joule losses, cost, passive character) in certain nanophotonic and optical frequency metamaterial applications. Here, we show chalcogenide semiconductor alloys offer a uniquely broad pallet of optical properties, complementary to those of existing material platforms, which can be controlled by stoichiometric design. Using combinatorial high-throughput techniques, we explore the extraordinary epsilon-near-zero, plasmonic and low/high-index characteristics of Bi:Sb:Te (BST) alloys: Depending upon composition they can for example: have plasmonic figures of merit higher than conductive oxides and nitrides across the entire UV-NIR range, and higher than gold below 550 nm; present dielectric figures of merit better than conductive oxides at near-infrared telecommunications wavelengths; and exhibit record-breaking refractive indices as low as 0.7 and as high as 11.5. & more..
1521-4095
Piccinotti, Davide
15c6d296-3464-43ec-943a-8155e66d2a51
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Hayden, Brian E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Piccinotti, Davide
15c6d296-3464-43ec-943a-8155e66d2a51
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Hayden, Brian E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Piccinotti, Davide, Gholipour, Behrad, Yao, Jin, MacDonald, Kevin F., Hayden, Brian E. and Zheludev, Nikolay I. (2019) Stoichiometric engineering of chalcogenide semiconductor alloys for nanophotonic applications. Advanced Materials, 31 (14), [1807083]. (doi:10.1002/adma.201807083).

Record type: Article

Abstract

A variety of alternative plasmonic and dielectric material platforms – among them nitrides, semiconductors and conductive oxides - have come to prominence in recent years as means to address the shortcomings of noble metals (including Joule losses, cost, passive character) in certain nanophotonic and optical frequency metamaterial applications. Here, we show chalcogenide semiconductor alloys offer a uniquely broad pallet of optical properties, complementary to those of existing material platforms, which can be controlled by stoichiometric design. Using combinatorial high-throughput techniques, we explore the extraordinary epsilon-near-zero, plasmonic and low/high-index characteristics of Bi:Sb:Te (BST) alloys: Depending upon composition they can for example: have plasmonic figures of merit higher than conductive oxides and nitrides across the entire UV-NIR range, and higher than gold below 550 nm; present dielectric figures of merit better than conductive oxides at near-infrared telecommunications wavelengths; and exhibit record-breaking refractive indices as low as 0.7 and as high as 11.5. & more..

Text
adma 201807083R1 accepted manuscript - Accepted Manuscript
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More information

Accepted/In Press date: 30 January 2019
e-pub ahead of print date: 17 February 2019
Published date: 2 April 2019

Identifiers

Local EPrints ID: 427970
URI: http://eprints.soton.ac.uk/id/eprint/427970
ISSN: 1521-4095
PURE UUID: bd7172ef-0cd8-4a84-b511-401e1fe5c0dc
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Brian E. Hayden: ORCID iD orcid.org/0000-0002-7762-1812
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 06 Feb 2019 17:30
Last modified: 26 Nov 2021 05:51

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Contributors

Author: Davide Piccinotti
Author: Behrad Gholipour
Author: Jin Yao
Author: Brian E. Hayden ORCID iD

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