Advanced process and device modeling of full-frame CCD imagers (Invited Paper)

Simulation for signal charge transfer of charge coupled devices

“…Charge transfer efficiency (CTE) is a key measure of CCD performance. CTE is defined as the ratio of the total charge successfully transferred out of a phase to the initial amount of charge present in the phase before the transfer [5] . The formula of CTE is CTE = [Q(G2)/Q(G1)] × 100%, where Q(G1) is the initial amount of charge present in the phase before the transfer, and Q(G2) is the total charge successfully transferred out of a phase.…”

“…The formula of CTE is CTE = [Q(G2)/Q(G1)] × 100%, where Q(G1) is the initial amount of charge present in the phase before the transfer, and Q(G2) is the total charge successfully transferred out of a phase. Because several thousand transfers are required in a large sensor, designs typically require a CTE of 99.999% or higher [5] . CTE is determined by many factors, including the size of the signal charge cell, the length of the phase, the presence of obstacles such as barriers and wells along with the charge transfer path, the time allowed for the transfer, etc [17,18] .…”