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

Abstract : 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 95 K.
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Submitted on : Monday, January 21, 2013 - 2:58:23 PM
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Alain Kreisler, Vishal Jagtap, Annick Dégardin. Infrared Response in the 95 to 300 K Temperature Range of Detectors Based on Oxygen-depleted Y-Ba-Cu-O Thin Films. Physics Procedia, Elsevier, 2012, 36, pp.223-228. ⟨10.1016/j.phpro.2012.06.150⟩. ⟨hal-00778835⟩

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