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- W1998441602 abstract "A 320 x 256 Complementary Barrier Infrared (CBIRD) focal plane array for long-wavelength infrared (LWIR) imaging is reported. The arrays were grown by molecular beam expitaxy (MBE) with a 300 period 1.9 um thick absorber. The mean dark current density of 2.2 x 10<sup>-4</sup> A/cm<sup>2</sup> was measured at an operating bias of 128 mV with a long wavelength cutoff of 8.8 μm observed at 50% of the peak. The maximum quantum efficiency was 54% measured at 5.6 μm. Operating at T = 80K, the array yielded an 81% fill factor with 97% operability. Good imagery with a mean noise equivalent different temperature (NE▵T) of 18.6 mK and a mean detectivity of D* = 1.3 x 10<sup>11</sup> cm-Hz<sup>1/2</sup>/W was achieved. The substrate was thinned using mechanical lapping and neither an AR coating nor a passivation layer was applied. This article provides the details of the fabrication process for achieving low-dark current LWIR CBIRD arrays. Discussion for an effective hard mask for excellent pattern transfer is given and appropriate mounting techniques for good thermal contact during the dry etching process is described. The challenges and differences between etching large 200 μm test diodes and small 28 μm FPA pixels are given." @default.
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- W1998441602 date "2012-05-01" @default.
- W1998441602 modified "2023-10-03" @default.
- W1998441602 title "320 x 256 complementary barrier infrared detector focal plane array for long-wave infrared imaging" @default.
- W1998441602 doi "https://doi.org/10.1117/12.920494" @default.
- W1998441602 hasPublicationYear "2012" @default.
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