13 October 2005 Status of AlGaN based focal plane arrays for UV solar blind detection
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Abstract
The fast development of nitrides has given the opportunity to investigate AlGaN as a material for ultraviolet solar blind detection in competition with technologies based on photocathodes, MCP intensifiers, back thinned CCD or hybrid CMOS focal plane arrays. All of the them must be associated to UV blocking filters. These new detectors present both an intrinsic spectral selectivity and an extremely low dark current at room temperature. First we will present the ultimate properties of the AlGaN based devices. These spectral properties are analysed in regards to the sharp cut off required for solar blind detection around 280nm, and we will quantify how the stringent difficulties to achieve solar blind filters can be reduced. We also investigated the electrical capabilities of Schottky diodes or Metal-Semiconductor-Metal (MSM) technologies to detect extremely low UV signal. We will especially present results from a linear array based on a CCD readout multiplexor.
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Jean-Luc Reverchon, Giovanni Mazzeo, Amélie Dussaigne, Jean-Yves Duboz, "Status of AlGaN based focal plane arrays for UV solar blind detection", Proc. SPIE 5964, Detectors and Associated Signal Processing II, 596402 (13 October 2005); doi: 10.1117/12.625223; https://doi.org/10.1117/12.625223
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