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Ultrafast pyroelectric photodetection with on-chip spectral filters.

Publication ,  Journal Article
Stewart, JW; Vella, JH; Li, W; Fan, S; Mikkelsen, MH
Published in: Nature materials
February 2020

Thermal detectors, such as bolometric, pyroelectric and thermoelectric devices, are uniquely capable of sensing incident radiation for any electromagnetic frequency; however, the response times of practical devices are typically on the millisecond scale1-7. By integrating a plasmonic metasurface with an aluminium nitride pyroelectric thin film, we demonstrate spectrally selective, room-temperature pyroelectric detectors from 660-2,000 nm with an instrument-limited 1.7 ns full width at half maximum and 700 ps rise time. Heat generated from light absorption diffuses through the subwavelength absorber into the pyroelectric film producing responsivities up to 0.18 V W-1 due to the temperature-dependent spontaneous polarization of the pyroelectric films. Moreover, finite-element simulations reveal the possibility of reaching a 25 ps full width at half maximum and 6 ps rise time rivalling that of semiconductor photodiodes8. This design approach has the potential to realize large-area, inexpensive gigahertz pyroelectric detectors for wavelength-specific detection from the ultraviolet to short-wave infrared or beyond for, for example, high-speed hyperspectral imaging.

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Published In

Nature materials

DOI

EISSN

1476-4660

ISSN

1476-1122

Publication Date

February 2020

Volume

19

Issue

2

Start / End Page

158 / 162

Related Subject Headings

  • Nanoscience & Nanotechnology
 

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Stewart, J. W., Vella, J. H., Li, W., Fan, S., & Mikkelsen, M. H. (2020). Ultrafast pyroelectric photodetection with on-chip spectral filters. Nature Materials, 19(2), 158–162. https://doi.org/10.1038/s41563-019-0538-6
Stewart, Jon W., Jarrett H. Vella, Wei Li, Shanhui Fan, and Maiken H. Mikkelsen. “Ultrafast pyroelectric photodetection with on-chip spectral filters.Nature Materials 19, no. 2 (February 2020): 158–62. https://doi.org/10.1038/s41563-019-0538-6.
Stewart JW, Vella JH, Li W, Fan S, Mikkelsen MH. Ultrafast pyroelectric photodetection with on-chip spectral filters. Nature materials. 2020 Feb;19(2):158–62.
Stewart, Jon W., et al. “Ultrafast pyroelectric photodetection with on-chip spectral filters.Nature Materials, vol. 19, no. 2, Feb. 2020, pp. 158–62. Epmc, doi:10.1038/s41563-019-0538-6.
Stewart JW, Vella JH, Li W, Fan S, Mikkelsen MH. Ultrafast pyroelectric photodetection with on-chip spectral filters. Nature materials. 2020 Feb;19(2):158–162.

Published In

Nature materials

DOI

EISSN

1476-4660

ISSN

1476-1122

Publication Date

February 2020

Volume

19

Issue

2

Start / End Page

158 / 162

Related Subject Headings

  • Nanoscience & Nanotechnology