3.15P) The excess electron concentration and Electic field is plotted in a bar of an n-type semiconductor. a) Show the directions of the electron drift and diffusion current flow and explain clearly.
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- (c) What is molar conductance, equivalent conductance and specific conductance? Howthey are interrelated? Discuss on each type of conductance effect of dilution with graphWhat is a matrix used in cyclic voltammetry? Define and give example of suchWe apply a voltage of 10 V to Fcc an aluminum wire 2 mm diameter and 20 m long , if 10 % of the valence electrons carry the electrical charge , the parameter of cell α = 0. 4049 nm , electrical conductivity σ = 3.77 ×105 cm-1. Ω-1. , calculate the average drift velocity of the electrons in m/sec
- Show inetmediates and electron flowUsing a simple infinite barrier approximation, calculate the “effective bandgap” of a 10 nm GaAs/AlGaAs quantum well grown along [001] direction. If there is a one-monolayer fluctuation in the well size, how much will the effective bandgap change? This example gives an idea of how stringent the control has to be in order to exploit heterostructures.Which row of the ICF table is defined by the balancedequation’s coefficients?
- The functioning of a liquid junction potential can be discussed in detail to obtain better understanding..If you wish to decrease the amount of current in a resistor from 240mA to 180mA by changing the 24V source, what should be the new voltage setting be?Fluorite (CaF2) has a face centered cubic structure, space group 225, with network parameter equal to 5.45 Å), with four CaF2 units per cell unitary (Ca+ at site 4a(0,0,0) and F- at site 8c(1/4.1/4.1/4 and 3/4.3/4.3/4) + face centered cubic lattice translations for both ions). a) Get a simplified expression for the structure factor F(hkl) of fluorite. (b) What condition must be fulfilled by the Miller indices h,k,l in such a way that F(hkl) ≠ 0?
- A thin film of zinc is to be deposited on one side of a steel sheet. Determine the zinc film thickness per 1cm2 of steel sheet if 2 A current was used and the electrolytic deposition process was done for exactly 30 minutes at 25oC. The zinc solution has a concentration of 1 M and can be assumed to be constant throughout the process. pls explain the solution shown in the figure thoroughly or you can come up with your own thank youThe first two signals from a powdered sample has X rays (=1.47742A) diffracted at angles of 13.48 and 15.62. What type of cubic crystal is it, and what is the unit-cell parameter?An atomic beam is designed to function with (a) cadmium, (b) mercury. The source is an oven maintained at 380K with a small slit of dimensions 1.0cm x 1.0 x 10-3cm. The vapor pressure of cadmium is 0.13 Pa nd that of mercury is 12 Pa at this temperature. What is the atomic current (the number of atoms per second) in the beams?
