A highly efficient CMOS nanoplasmonic crystal enhanced slow-wave thermal emitter improves infrared gas-sensing devices

Pusch, Andreas, De Luca, Andrea, Oh, Sang S. ORCID: https://orcid.org/0000-0003-3093-7016, Wuestner, Sebastian, Roschuk, Tyler, Chen, Yiguo, Boual, Sophie, Ali, Zeeshan, Phillips, Chris C., Hong, Minghui, Maier, Stefan A., Udrea, Florin, Hopper, Richard H. and Hess, Ortwin 2015. A highly efficient CMOS nanoplasmonic crystal enhanced slow-wave thermal emitter improves infrared gas-sensing devices. Scientific Reports 5 , 17451. 10.1038/srep17451

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Abstract

The application of plasmonics to thermal emitters is generally assisted by absorptive losses in the metal because Kirchhoff’s law prescribes that only good absorbers make good thermal emitters. Based on a designed plasmonic crystal and exploiting a slow-wave lattice resonance and spontaneous thermal plasmon emission, we engineer a tungsten-based thermal emitter, fabricated in an industrial CMOS process, and demonstrate its markedly improved practical use in a prototype non-dispersive infrared (NDIR) gas-sensing device. We show that the emission intensity of the thermal emitter at the CO2 absorption wavelength is enhanced almost 4-fold compared to a standard non-plasmonic emitter, which enables a proportionate increase in the signal-to-noise ratio of the CO2 gas sensor.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Nature Publishing Group
ISSN:	2045-2322
Date of First Compliant Deposit:	13 December 2017
Date of Acceptance:	29 September 2015
Last Modified:	04 May 2023 20:46
URI:	https://orca.cardiff.ac.uk/id/eprint/106279

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