Stability and photometric accuracy of delta-doped CCDs and CMOS image sensors in space

State-of-the-art silicon detectors are susceptible to damage and instabilities caused by ionizing radiation in space. Despite decades of development, surface damage caused by ionizing radiation has proved challenging in multiple NASA and commercial applications. In this paper, the sensi-tivity and stability of doped silicon surfaces are analyzed as functions of radiation-induced sur-face and oxide trap densities. Delta-doped CCDs and CMOS image sensors are shown to be uniquely stable against ionizing radiation damage, enabling the stability and photometric accu-racy required by NASA for exoplanet science and time domain astronomy.