Raising the drain voltage leads to an exponential increase of the minimal leakage current which shows the importance of proper designing of the
power supply voltage to ensure small leakage current. As depicted in Figure 6, the proposed model points out strong gate-source voltage dependence of the current–voltage characteristic showing that the V GS increment effect will influence the drain current. In other words, as V GS increases, a greater value of I D results. As the drain voltage rises, the voltage drop #buy INK1197 randurls[1|1|,|CHEM1|]# through the oxide close to the drain terminal reduces, and this shows that the induced inversion charge density close to the drain also decreases . The slope of the I D versus V DS curve will reduce as a result of the decrease in the incremental conductance of the channel at the drain. This impact is indicated in the I D-V DS curve in Figure 6. If V DS increases to the point that the potential drop across the oxide at the drain terminal is
equal to V T, the induced inversion charge density is zero at the drain terminal. At that point, the incremental conductance at the drain is nil, meaning that the slope of the I D-V DS curve is zero. We can write (14) where V DS (sat) is the drain-to-source voltage which is creating zero inversion charge density at the drain terminal. When V DS is more than the V DS (sat) value, the point in the channel where the inversion charge is zero moves closer to the source terminal . In this case, electrons move into the channel at the source and pass through the channel towards the drain, and then at Selleck A1155463 that point when the charge goes to zero, the electrons are infused into the space charge
region where they are swept by the E-field to the drain contact. Compared to the original length L, the change in channel length ΔL is small, then the drain current will be regular for V DS > V DS (sat). The region of the I D-V DS characteristic is referred to as the saturation region. When V GS is changed, the I D-V DS curve will also be changed. It was found that if V GS increases, the initial slope of I D-V DS will be raised. We can also infer from Equation 14 that the value of V DS (sat) is a function of V GS. A family of curves is created Glutathione peroxidase for this n-channel enhancement-mode TGN SB FET, as shown in Figure 6. Figure 6 I D (μA)- V DS (V) characteristic of TGN SB FET at different values of V GS for L = 100 nm. Also, it can be seen that by increasing V GS, the saturation current increases, showing the fact that a larger voltage drop occurs between the gate and the source contact. Also, there is a bigger energy value for carrier injection from the source contact channel . The impact of power supply up-scaling decreases the SB length at the drain side, allowing it to be more transparent and resulting in more turn-on current to flow.