Integration of a High Temperature Transition Metal Oxide NTC Thin Film in a Microbolometer for LWIR Detection

Sarah Risquez, Sebastian Redolfi, Clément Fleury, Matthias Wulf, Ali Roshanghias, Adrien Piot, Jeremy Streque, Kerstin Schmoltner, Thang Duy Dao, Markus Puff, Mohssen Moridi

Publikation: Konferenzband/Beitrag in Buch/BerichtKonferenzartikelBegutachtung

Abstract

In this paper, we report the integration of a non-CMOS transition metal oxide composite thin film with a high negative temperature coefficient resistance (NTCR) of 3.8 %/K on a silicon nitride membrane for uncooled infrared microbolometer working in the long wavelength infrared (LWIR) region. The NTC thin film is fabricated by a chemical solution deposition process requiring high crystallization temperature (>750°C). Different micromachined silicon-nitride membrane-supported bolometers (1, 2×2 and 4×4 pixels) with a 170×170 µm 2 pixel size are successfully fabricated and packaged in a vacuum-shielded TO housing. The fabricated devices exhibit a typical noise equivalent temperature difference (NETD) value down to 15 mK×Hz -1/2 and a high specific detectivity characteristic of 1.4×10 8 cm×Hz 1/2 ×W -1 .
OriginalspracheEnglisch
TitelIntegration of a High Temperature Transition Metal Oxide NTC Thin Film in a Microbolometer for LWIR Detection
DOIs
PublikationsstatusVeröffentlicht - 2023
Veranstaltung2023 IEEE 36th International Conference on Micro Electro Mechanical Systems (MEMS) - Science Congress Center Munich Walther-von-Dyck Straße 10 , 85748 Garching bei München, Deutschland
Dauer: 15 Jän. 202319 Jän. 2023
https://mems23.org/

Konferenz

Konferenz2023 IEEE 36th International Conference on Micro Electro Mechanical Systems (MEMS)
KurztitelIEEE MEMS 2023
Land/GebietDeutschland
Ort85748 Garching bei München
Zeitraum15/01/2319/01/23
Internetadresse

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