Single event transient effects on 3T and 4T CMOS active pixel sensors for different technologies

• Main Authors: Ahamad Sukor, Masturah, Hedzir, Anati Syahira, Sabri, Sharizal Fadlie, Hasbullah, Nurul Fadzlin
• Format: Article
• Language: English; English
• Published: Taylor & Francis Group 2019
• Subjects: TK Electrical engineering. Electronics Nuclear engineering; TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
• Online Access: http://irep.iium.edu.my/72558/1/72558_Single%20event%20transient%20effects%20on%203T%20and%204T_complete.pdf; http://irep.iium.edu.my/72558/2/72558_Single%20event%20transient%20effects%20on%203T%20and%204T_scopus.pdf; http://irep.iium.edu.my/72558/; https://www.tandfonline.com/doi/abs/10.1080/1448837X.2019.1624245?journalCode=tele20
• Institution: Universiti Islam Antarabangsa Malaysia

The widely used CMOS Active Pixel Sensors (APS) in space imaging mission are vulnerable to radiations known as Single Event Transient (SET). This paper focus on 3T and 4T CMOS APS with technology from 130 nm scaling down to 32 nm, simulated using various Linear Energy Transfer (LET) magnitudes ranging from 3.3 to 67.7 MeV.cm2/mg. Larger transient currents were observed at higher LET for both APS architectures. The peak drain current of 3T increases with slightly steeper slope by roughly 8% than 4T due to the difficulty of electron transfer in 4T. In 3T, 130 nm, 90 nm, 65 nm and 45 nm override the 32 nm technology by 13.93%, 9.09%, 4.43% and 2.06%, respectively. The total charge collection of the 3T is constantly higher than the 4T APS by the ratio of at least 1.25 indicates 4T has a higher radiation hardness. A bright spot degradation is expected to occur in the image if the transient signal is more than 20% of the original signal which mainly attributed to the lower operating voltage and smaller nodal capacitance. From this study, 4T CMOS APS shown more radiation hardness than the 3T CMOS APS and 32 nm technology exhibits lowest radiation-tolerant.