(a) Assume that a pnp bipolar junction transistor (BJT) operated under normal and active conditions. Given that the emit

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A Assume That A Pnp Bipolar Junction Transistor Bjt Operated Under Normal And Active Conditions Given That The Emit 1 (107.94 KiB) Viewed 25 times

(a) Assume that a pnp bipolar junction transistor (BJT) operated under normal and active conditions. Given that the emitter injection efficiency and the current transfer ratio are 0.98 and 0.96, respectively. Calculate the ratio of transit time across the base and hole life-time in the base of the BJT. (b) Assume that the surface potential at the onset of strong inversion is 0.56 V in an ideal Si n-channel metal-oxide-semiconductor field-effect transistor (MOSFET) operated at 300 K. What is the acceptor doping concentration in the p-type Si substrate? Write down the equation for the charge neutrality due to this inversion. (c) Assume that a FET is built from all atomically thin two-dimensional (2D) material components. Give names of 2D materials typically used as active channel, top-gate dielectric, and source/drain and top gate contacts for the FET, respectively.