What is the lattice constant for FCC crystal having atomic radius 1.476 Å? a) 1.476 Å b) 4.1748 Å c) 5.216 Å d) 0
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What is the lattice constant for FCC crystal having atomic radius 1.476 Å?
a) 1.476 Å
b) 4.1748 Å
c) 5.216 Å
d) 0
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- Q2 part cCalculate the hole velocity when a voltage of 5 V is applied through a semiconductor bar as below: V + 0.05 cm 0.55 cm (Mobility of hole is given as 450 cm²/Vs) Select one: A. 14500 cm/s B. 4090 cm/s C. 4500 cm/s D. 13180 cm/s 0.3 cmFigure 1 shows the absorption coefficient for several direct and indirect bandgap semiconductors. Analyses these figure in term of indirect bandgap materials. ABSORPTION COEFFICIENT (cm²) 106 105. 104 103. 10² 10 0.2 3 GaP 2 Si 0.6 PHOTON ENERGY (CV) 1.5 GaAs InP Figure 1 In0.53 Ga0.47As 1.4 WAVELENGTH (μm) 0.7 1.8
- Which of the following lattice structure is the? reciprocal Lattice of FCC lattice FCC .a O BCC .b O HCP .C O SC .d OIn a bipolar junction transistor: A) all the three regions (the emitter, the base and the collector) have equal concentrations of impurity B) the emitter has the least concentration of impurity C) the collector has the least concentration of impurity D) the base has the least concentration of impurityA20. An intrinsic silicon semiconductor is uniformly doped with acceptors to a level of 2x1017 cm-³. At room temperature, the electron concentration in this semiconductor is found to be 5x10² cm-3. What is the intrinsic carrier concentration of this semiconductor at room temperature and describe qualitatively how would the electron concentration change if the temperature increased slightly?
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