Low dark current LWIR and VLWIR HgCdTe focal plane arrays at AIM

S. Hanna; D. Eich; W. Fick; H. Figgemeier; M. Mahlein; W. Schirmacher; R. Thöt

doi:10.1117/12.2244514

19 October 2016 Low dark current LWIR and VLWIR HgCdTe focal plane arrays at AIM

S. Hanna, D. Eich, W. Fick, H. Figgemeier, M. Mahlein, W. Schirmacher, R. Thöt

Proceedings Volume 10000, Sensors, Systems, and Next-Generation Satellites XX; 100000P (2016) https://doi.org/10.1117/12.2244514
Event: SPIE Remote Sensing, 2016, Edinburgh, United Kingdom

Abstract

In this paper AIM presents an update on its results for both n-on-p and p-on-n low dark current planar MCT photodiode technology LWIR and VLWIR two-dimensional focal plane detector arrays with a cut-off wavelength >11μm at 80K and a 640×512 pixel format. The arrays are stitched from two 512×320 pixel photodiode arrays at a 20μm pixel pitch. Thermal dark currents significantly reduced as compared to ‘Tennant’s Rule 07’ at a yet good detection efficiency <60% as well as results from NETD and photo response performance characterization are presented over a wide operating temperature range. The improvements made allow for the same dark current performance at a 20K higher operating temperature than with previous AIM technology. The demonstrated detector performance paces the way for a new generation of higher operating temperature low SWaP LWIR MCT FPAs with a <30mK NETD up to a 110K detector operating temperature and with good operability. Alternatively, lower dark currents at common operating temperatures may be attained, enabling cutting edge next generation LWIR/VLWIR detectors for space instruments.

Citation Download Citation

S. Hanna, D. Eich, W. Fick, H. Figgemeier, M. Mahlein, W. Schirmacher, and R. Thöt "Low dark current LWIR and VLWIR HgCdTe focal plane arrays at AIM", Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 100000P (19 October 2016); https://doi.org/10.1117/12.2244514

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