Calculate the volume density of Si atoms (number of atoms/

cm²), giventhat the lattice constant of Si is 5.43

Å. Calculate the areal density ofatoms (number/

cm³) on the (100) plane.

2024-09-18

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2024-09-18

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2024-09-18

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2024-09-18

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In a long semiconductor bar (E_G= 2 eV), conduction band electrons come in from the left in the positive x-direction with a kinetic energy of 3 eV. They move from location A to B to C to D. Between A and B,the electric field is zero; between locations B and C, there is a linearly varying voltage increase of 4 V; between C and D, the field is again zero. Assuming no scattering, sketch a simplified band diagram describing the motion of these electrons. Assuming that these electrons can be described as plane waves, with a free-electron mass, write down the wavefunction of the electrons at D. Leave your result in terms of an arbitrary normalization constant. Draw a band diagram and give the wavefunction at D in terms of the normalization constant.

2024-09-18

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