Figure 3
Device characteristics initially and after pulsed high-voltage stress was applied. The black solid line indicates the initial I–V characteristics under Vds = 0.1 V. The blue and red dashed lines are the I–V sweep signals after the stress. (a) I–V characteristics after the 1 kHz square-type pulsed signal (duty rate 10% and 40 V amplitude) at the gate side. (b) I–V characteristics after the 1 kHz square type pulsed signal (duty rate 10% and 40 V amplitude) at the drain side. The gap between the initial shifted and stressed I–V characteristic curve is marked with filled red color.
