Infrared Response in the 95 to 300K Temperature Range of Detectors Based on Oxygen-depleted Y-Ba-Cu-O Thin Films

In order to develop radiation thermal detectors, oxygen-depleted amorphous YBa2Cu3O7−δ (YBCO) thin films were grown at low temperature (< 150¡C) on SiO2/Si substrates by direct-current hollow cathode sputtering, which allows to envisage further integration of detectors on a readout electronics si...

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Bibliographic Details
Published inPhysics procedia Vol. 36; pp. 223 - 228
Main Authors Kreisler, Alain J., Jagtap, Vishal S., Dégardin, Annick F.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2012
Subjects
Amorphous semiconductor
Bolometric response
Detector cooling
Detector noise
Infrared thermal detector
Pyroelectric response
Yttrium barium copper oxide
Detector cooling
Infrared thermal detector
Detector noise
Bolometric response
Amorphous semiconductor
Yttrium barium copper oxide
Pyroelectric response
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Summary:In order to develop radiation thermal detectors, oxygen-depleted amorphous YBa2Cu3O7−δ (YBCO) thin films were grown at low temperature (< 150¡C) on SiO2/Si substrates by direct-current hollow cathode sputtering, which allows to envisage further integration of detectors on a readout electronics silicon chip. Planar and metal/YBCO/metal tri-layer sensing structures were then processed. The near-infrared optical response showed evidence of a transition from bolometric to pyroelectric behavior on planar devices, but it was only pyroelectric for tri-layer devices. They exhibited response level and noise performance competitive with other room temperature infrared bolometers with the possibility to enhance this performance by cooling down to 95K.
ISSN:1875-3892
1875-3892
DOI:10.1016/j.phpro.2012.06.150