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please solve an aluminum doped silicon wafer is heated to 460 kthe concentration of aluminum is n08x1016cm 3find 1ni 2n 3 p select3 correctanswers 31878
2023年6月6日
numerade.com
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VIDEO solution:Consider, as shown in Figure P8.35, a uniformly doped silicon pn junction at T=300 K with impurity doping concentrations of Na=Nd=5 ×10^15 cm^-3 and minority carrier lifetimes of τn 0=τp 0=τ0=10^-7 s. A reverse-biased voltage of VR=10 V is applied. A light source is incident only on the space charge region, producing an excess carrier generation rate of g^'=4 ×10^19 cm^-3 s^-1. Calculate the generation current density. | Numerade
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Consider a bar of p-type silicon that is uniformly doped to a value of Na=2 ×10^16 cm^-3 at T=300 K. The applied electric field is zero. A light source is incident on the end of the semiconductor as shown in Figure P 6.19. The steady-state concentration of excess carriers generated at x=0 is δp(0)=δn(0)=2 ×10^14 cm^-3. Assume the following parameters: μn=1200 cm^2 / V-s, μp=400 cm^2 / V-s, τn 0=10^-6 s, and τp 0=5 ×10^-7 s. Neglecting surface effects, ( a ) determine the steady-state exce
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Consider a 2 -mm-thick silicon wafer to be doped using antimony. Assume that the dopant source (gas mixture of antimony chloride and other gases) provides a constant concentration of 10^22 atoms/ m^3. We need a dopant profile such that the concentration of 𝐒 𝐛 at a depth of I micrometer is 5 ×10^21 atoms / m^3. What is the required time for the diffusion heat treatment? Assume that the silicon wafer initially contains no impurities or dopants. Assume that the activation energy for diffusion of
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A silicon wafer was doped in a 1000^∘ C predeposition diffusion with phosphorus to its solid solubility limit. The process time was 20 min. After the predeposition, the surface of the silicon was sealed and an 1100^∘ C drive in was done. Find the drive in time necessary to obtain a junction depth of 4.0 μm. Assume a substrate concentration of 10^17 cm^-3. What is the surface concentration after the drive in? | Numerade
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Georgia Tech Alumni on Instagram: "A 200-mm diameter silicon “wafer” containing electronic circuits needed to power everything from your smartphone to the internet, a Georgia Tech-issued slide rule, a replica of a germanium transistor, a shaman mask, and a Tippe Top are just some of the hidden gems in John Cressler’s office in the Tech Square Research Building. Cressler has taught at Tech for nearly 25 years."
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Classify each of the following as being either a p - type or a n - type semiconductor:(i) Ge doped with In (ii) Si doped with B
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