Draw the energy diagram of a pn junction, Electrical Engineering

Assignment Help:

Question:

a). Draw the energy diagram of a pn junction:
(i) at thermal equilibrium,

(ii) when a forward bias with magnitude half the built in potential (V = φk/2) is applied and

(iii)  when a  reverse bias of magnitude ten times the built in potential  (V = -3φk) is applied.

b).  With the aid of diagrams, describe how a space charge region is formed in a pn junction and how its width varies with an external bias.

c).  An abrupt silicon (ni = 1010 cm-3) pn junction consists of a p-type region containing 1017 cm-3 acceptors along with 1016 cm-3 donors and an n-type region containing 5 x 1016 cm-3 donors along with 1015 cm-3 acceptors. Calculate the total width of the depletion region if the applied voltage, V, equals 0, 0.5 and -2.5 V. Assume Vt = 25meV.


Related Discussions:- Draw the energy diagram of a pn junction

Why earthing is required for any electrical equipments, Why earthing is req...

Why earthing is required for any electrical equipments, domestic installation and service building etc? For TL coaches what is the minimum I.R. value needed for new wiring? An

Determine l and c of the band reject filter circuit, Q. Determine L and C o...

Q. Determine L and C of the band reject filter circuit of Figure to have a center frequency of 100 kHz and a bandwidth of 5 kHz. Also find the Q of the filter.

Define causal system - discrete time systems, Define Causal System - Discre...

Define Causal System - Discrete Time Systems? A causal system is one which produces an output only when there is an input. All physical systems are causal. In general, a causal

Explain the working principle of an opto coupler, Q. Explain the working pr...

Q. Explain the working principle of an opto coupler? When it is necessary to block the voltage between one electronic circuit and another, and transfer the signal at the same t

Diode characteristic, Q. For the circuit shown in Figure(a), determine the ...

Q. For the circuit shown in Figure(a), determine the diode current and voltage and the power delivered by the voltage source. The diode characteristic is given in Figure.

Can you explain octal to binary conversion, Q. Can you explain Octal to Bin...

Q. Can you explain Octal to Binary Conversion? It is also simple to convert from an integer octal number to binary. This is completed by: Convert the decimal number

Is the quantizer midriser or midtread, Q. The quantum levels of a quantizer...

Q. The quantum levels of a quantizer are separated by the step size δv = 0.2 V, with the lowest and highest levels of-3.3 V and +3.3 V, respectively. A sequence ofmessage sample

Discuss in brief on combination clippers, Q. Discuss in brief on combinatio...

Q. Discuss in brief on combination clippers ? Combination clippers are a combination of biased positive and negative clippers. With a combination clipper, a portion of both pos

Forth generation, Forth Generation VLSI  technology  of IC made it poss...

Forth Generation VLSI  technology  of IC made it possible  to design the  complete  circuit  of ALU  Arithmetic  logic unit and cu ( Control Unit ) within  single  chip  which

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd