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Proceedings 2017, 1(4), 634; doi:10.3390/proceedings1040634

Optical and Electrical Characterizations of Uncooled Bolometers Based on LSMO Thin Films

1
Normandie Univ., UNICAEN, ENSICAEN, CNRS, GREYC, 14000 Caen, France
2
School of Electrical and Computer Engineering, University of Campinas, Campinas/SP, 13083-852, Brazil
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 18 September 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

In this paper the optical and electrical characterization of a 75 × 75 µm2 uncooled bolometers based on free-standing La0.7Sr0.3MnO3 /CaTiO3 (LSMO/CTO) thin films fabricated by micromachining of the silicon substrates is presented. R(T) curves have been compared to electro thermal simulations. Its thermal conductance was measured to be 9 × 10−6 W·K−1 around 300 K. The optical characterization was performed by modulating the power of a 635 nm laser diode and was carried out at different bias currents and temperatures. Finally, the frequency dependence of the bolometer presented at different temperatures and at optimal current shows that both sensitive and fast uncooled bolometers can be fabricated using suspended LSMO thin films.
Keywords: bolometer; thermal conductance; frequency response bolometer; thermal conductance; frequency response
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nascimento, V.M.; Silva, M.E.B.G.N.; Liu, S.; Manera, L.; Méchin, L.; Guillet, B. Optical and Electrical Characterizations of Uncooled Bolometers Based on LSMO Thin Films. Proceedings 2017, 1, 634.

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