Consider the C-V curve of an MOS capacitor in Fig. 5-38 (the solid line). The capacitor area is 6.400 µm2. C0 = 45 pF and C1 = 5.6 pF.
![1911_8a9774ec-24eb-4f4c-8e00-8b8a7c6616c0.png](https://secure.tutorsglobe.com/CMSImages/1911_8a9774ec-24eb-4f4c-8e00-8b8a7c6616c0.png)
If, due to the oxide fixed charge. the C-V curve is shifted from the solid line to the dashed line with ?V = 0.05 V. what is the charge polarity and the area density (C/cm2) of the oxide fixed charge?