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- What are the most common elemental dopants in the solar cell industry to create n+ -type and p-type regions, respectively? Please schematically illustrate their doping mechanisms based on atomic lattices.Answer the following question step-wisewise showing clearly all stepsIn the circuit below, we would like to bias the transistor 5) such that it operates in the active region. (Assuming that we want to have a dc collector current of Ic = 1mA, VBE = 0.7V and B = 100.) +10V +10V R, S Iel> Rc 80k? a) Find the Vihevenin and Rahevenin equivalent for the shaded region of the circuit. B= 100 3 RE 20k b) Find the value of Rg which places the transistor in the active region with I, = 1mA c) Find the value of R. which are also suitable for keeping the transistor in the active region with Ie = 1mA.