Charge transfer effects in a CCD with a single polysilicon gate structure

G. Prigozhin; B. Burke; M. Cooper; K. Donlon; C. Leitz; R. Foster; B. LaMarr; A. Malonis; M. Bautz

doi:10.1117/12.2562677

13 December 2020 Charge transfer effects in a CCD with a single polysilicon gate structure

G. Prigozhin, B. Burke, M. Cooper, K. Donlon, C. Leitz, R. Foster, B. LaMarr, A. Malonis, M. Bautz

Proceedings Volume 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 114541C (2020) https://doi.org/10.1117/12.2562677
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

NASA is currently studying a mission concept called Lynx for the next generation X-ray telescope to follow up on highly successful Chandra observatory that has been in operation since 1999. Detector technology for the main instruments focal planes has not been selected at this time, with several different options under consideration (see¹). Charge Coupled Devices (CCDs) have been traditionally the detectors of choice for space X-ray instruments, and, while new technologies, such as CMOS image sensors and hybrid detectors made huge progress in recent years, CCDs still have a combination of features that make them difficult to replace as soft X-ray detectors. To enhance these advantages, MIT Lincoln Laboratory has in recent years designed several versions of a CCD with single level polysilicon gates which can be controlled by low voltages compatible with CMOS driving circuitry, and could be an attractive option for Lynx and other X-ray space missions due to its higher speed and lower power consumption. In this work we investigate their parameters at higher speed and lower voltage amplitudes and report some of the results of testing those new detectors. We describe new techniques that we developed to study physical mechanisms that limit device performance.

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G. Prigozhin, B. Burke, M. Cooper, K. Donlon, C. Leitz, R. Foster, B. LaMarr, A. Malonis, and M. Bautz "Charge transfer effects in a CCD with a single polysilicon gate structure", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 114541C (13 December 2020); https://doi.org/10.1117/12.2562677

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