Germanium has a bandgap of 0.66 ev. the temperature is 25 degree celcius. (i) assuming that the material is intrinsic and that b is 2.31 e + 30 k-3cm-6, calculate the hole density. (ii) what is the dopant concentration that you would use if germanium has to have an electron concentration of 5.0e + 17 cm-3. (iii)give an example of a dopant atom that you would achieve to an electron concentration of 5.0e + 17 cm in germanium. give a clear reason for your choice considering that the material is germanium. (iv)draw the conduction band, valence band and the energy level of the dopant atom used to achieve the above electron concentration. you only need to draw the energy level of a single dopant atom. (v) what is the charge at each dopant atom location?