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Q1: Find the kinetic energy of electrons in the conduction band of a nondegenerate n-type semiconductor at 300 K.

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2000 50 Consider the following energy band diagram. The 1000 Si 20 500 Ha, D, semiconductor is Si maintained at 300K with E¡-Ef 10 200 5 = E/4 at x=L & -L, and Ef - E;= E/4 at x=0. Note 100 Hp. Dp 50 the choice of Ef as the energy reference and the 20 identification of carriers at various points on the 10000 200 diagram. 5000 GaAs 100 Hai Dn 2000 Un, Up can be estimated from the figure. 50 1000 20 500 H,.D, 10 200 100 1014 1015 1016 1017 1018 1019 1020 Impurity concentration (cm-) Figure 2.3 O John Wiley & Sons, Inc. All rights reserved. Mobility (cm²/V s) Mobility (cm²/V s) Diffusivity (cm²/s) Diffusivity (cm²/Is)
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Question 1 (a) Semiconductors are materials which have a conductivity between conductors. Based on your knowledge, describe at least three particles that make up the atom and briefly describe the difference between n-type and p-type semiconductor materials. Classify the three particles that make up the atom and briefly describe the difference between n-type and p-type semiconductor materials. (b) Figure 1 shows a basic diode with p-type and n-type semiconductors with complete Voltage Bias. Identify the depletion region when the diode is conducted in reverse bias. With the aid of suitable diagram, briefly explain the region occur when the 5 V supply voltage is аpplied. p region n region VBIAS Figure 1 (c) Figure 2 shows the class of materials based on relative comparisons. Based on Figure 2 description, identify the materials that affected the conduction and valence band. As an engineer, explain the consequences if the atomic number of a neutral atom is 8, and the maximum number of…
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What is true about semiconductors? It is easy for electrons to move through them. O They are so rare that it's unusual to see them in daily life. It is hard for electrons to move through them. O You can change how easily electrons move through them.
3 The Fermi-Dirac distribution provides the fraction of electrons that can be found for a given electron energy and temperature of the material. Silicon is a widely use semiconductor for computer processors and GPUs, with a band gap of 1.11 eV at room temperature (293 K). a) What is the Fermi energy of Silicon at room temperature? b) Calculate the electron concentration (total number of electrons) at 0.6 eV above the fermi level (in the conduction band) of one mol of silicon (each silicon atom contributes 4 electrons).
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