Knowlton
MSE/ECE 310
Quiz 7 – Learning objectives
Topics :
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Lectures of course covering 6 of Kasap and Problem Set 10
• p-n homojunctions, bipolar transistors, Metal-semiconductor junctions, and governing equations (e.g., Poisson’s equation, charge neutrality equation)
Learning Objectives: For the quiz, the student should know how to:
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Draw the band diagrams and FULLY LABEL EVERYTHING for the following homojunctions in the conditions of flat band, equilibrium, forward bias, reverse bias: o p-n o n-p o n-p-n o p-n-p
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Include both ohmic and Schottky contacts to the previously mentioned band diagrams
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Draw the band diagrams of bipolar transistors (i.e., n-p-n and p-n-p) and explain how bipolar transistors work
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Determine if a bipolar transistor is a majority or minority carrier device
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Describe how doping differences between the n- and p- side of a p-n junction changes the depletion region and the flat band voltage (i.e., built-in voltage)
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Write down and define all variables of the charge neutrality equation for a p-n junction.
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Write down Poisson’s equation and define all variables
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Explain the concept of Poisson’s equation
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Apply Poisson’s equation to any depletion region (i.e., space charge region) in any junction to calculate the electric field and the voltage in the depletion region
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Show that Poisson’s equation is a force-energy relation
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Write down the relationship between energy and voltage and define all variables