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Unformatted text preview: . • Assume that recombination only occurs at the contacts and that there is no recombination in the quasi ‐ neutral regions or the space charge regions. a) What are the thermal equilibrium values of the potential barrier for the base ‐ emitter ( φ BE ) and base ‐ collector ( φ BC ) junctions? b) What is the width of the quasi ‐ neutral base region, W B at equilibrium? c) What is β F (ignore the effect of the depletion region under forward bias for this calculation)?...
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- Spring '08
- Bipolar junction transistor, Microelectronic Devices and Circuits, Microelectronic Devices, MIT OpenCourseWare http://ocw.mit.edu, base‐collector abrupt junctions, pnp Bipolar Junction