Infrared charge-injection-device array performance at low background

Astronomy and Astrophysics – Astronomy

Scientific paper

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Charge Injection Devices, Infrared Astronomy, Infrared Detectors, Frequency Response, Infrared Telescopes, Noise Intensity, Silicon Junctions, Temperature Dependence

Scientific paper

Low-background tests of a 1 x 32 Si:Bi charge-injection-device (CID) IR detector are carried out to evaluate its feasibility for space-based astronomical observations. Optimum performance is obtained at a temperature of 11 K. The sensitivity is found to compare well with that of discrete extrinsic silicon photoconductors. The measured sensitivity and the apparent absence of anomalous effects make extrinsic silicon CID arrays very promising for astronomical applications.

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