Degradations of Threshold Voltage, Mobility, and Drain Current and the Depend…

Based on test results and a procedure that can isolate threshold voltage degradation and mobility degradation from drain current degradation, we found that the log–log curves of mobility degradation show saturation with a change of slope from about 0.4 to smaller values at room temperature. Although both the mobility and threshold voltage degradations are more severe at 77 K than at 300 K fo…