Characterization of a 15 $mu m$ Cutoff HgCdTe Detector Array for Astronomy. (arXiv:1911.08057v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Cabrera_M/0/1/0/all/0/1">Mario S. Cabrera</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+McMurtry_C/0/1/0/all/0/1">Craig W. McMurtry</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Forrest_W/0/1/0/all/0/1">William J. Forrest</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pipher_J/0/1/0/all/0/1">Judith L. Pipher</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dorn_M/0/1/0/all/0/1">Meghan L. Dorn</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lee_D/0/1/0/all/0/1">Donald Lee</a>
The University of Rochester infrared detector group is working together with
Teledyne Imaging Sensors to develop HgCdTe 15 $mu m$ cutoff wavelength
detector arrays for future space missions. To reach the 15 $mu m$ cutoff goal,
we took an intermediate step by developing four $sim$13 $mu m$ cutoff
wavelength arrays to identify any unforeseen effects related to increasing the
cutoff wavelength from the extensively characterized 10 $mu m$ cutoff
wavelength detector arrays developed for the NEOCam mission. The
characterization of the $sim$13 $mu m$ cutoff wavelength HgCdTe arrays at the
University of Rochester allowed us to determine the key dark current mechanisms
that limit the performance of these HgCdTe detector arrays at different
temperatures and bias when the cutoff wavelength is increased. We present
initial dark current and well depth measurements of a 15 $mu m$ cutoff array
which shows dark current values two orders of magnitude smaller at large
reverse bias than would be expected from our previous best structures.
The University of Rochester infrared detector group is working together with
Teledyne Imaging Sensors to develop HgCdTe 15 $mu m$ cutoff wavelength
detector arrays for future space missions. To reach the 15 $mu m$ cutoff goal,
we took an intermediate step by developing four $sim$13 $mu m$ cutoff
wavelength arrays to identify any unforeseen effects related to increasing the
cutoff wavelength from the extensively characterized 10 $mu m$ cutoff
wavelength detector arrays developed for the NEOCam mission. The
characterization of the $sim$13 $mu m$ cutoff wavelength HgCdTe arrays at the
University of Rochester allowed us to determine the key dark current mechanisms
that limit the performance of these HgCdTe detector arrays at different
temperatures and bias when the cutoff wavelength is increased. We present
initial dark current and well depth measurements of a 15 $mu m$ cutoff array
which shows dark current values two orders of magnitude smaller at large
reverse bias than would be expected from our previous best structures.
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