1- How does diffusion current depend on the doping concentration- How.docx

•Als DOCX, PDF herunterladen•

0 gefällt mir•5 views

1/ How does diffusion current depend on the doping concentration? How does the drift current depend on the doping concentration? 2/ How does the doping concentration affect both diffusion and drift current in semiconductors? 3/ What processes take place at the p-n junction in a Si diode that lead to the equilibrium? 4/ What processes take place at the p-n junction in a Si diode? Describe how the depletion region forms and why diffusion currents stop flowing reaching equilibrium? 5/ What phenomena take place at the p-n junction in a Si diode? Describe how the depletion region forms and identify the two competing processes that result in the equilibrium? 6/ What happen to the depletion region and the built-in barrier at the p-n junction in a Si diode when a) forward bias is applied, b) reverse bias is applied? 7/ What is the principle behind the operation of a voltage regulation? 8/ What is the purpose behind using the different models for a Si p-n junction diode? Solution 1.A semiconductor can be doped with donor atoms and/or acceptor atoms.Â Â Â o If the concentration of donor atoms (ND) is greater than the concentration of acceptor atoms (NA), then the semiconductor material is n?type, because the concentration of electrons (n) is greater than the concentration of holes (p): n = ND?NA p = ni 2 /n o If NA > ND, then the semiconductor material is p?type, because p > n: p = NA?ND n = ni 2 /p 2. Diffusion current is a current in a semiconductor caused by the diffusion of charge carriers (holes and/or electrons). Diffusion current can be in the same or opposite direction of a drift current, that is formed due to the electric field in the semiconductor. At equilibrium in a p .

Bildung

Weitere ähnliche Inhalte

Ähnlich wie 1- How does diffusion current depend on the doping concentration- How.docx

semiconductor

Anshu Hilsa

BEEIE UNIT IV PPT.ppt

DEEBIKAR2

Basic Electronics UNIt1 PPT

Praveen Kunda

NMR Spectroscopy

suraj wanjari

Introduction To Photovoltaic Device Physics

Samsung Electro-Mechanics

BE UNIT 1 PPT.ppt

ashok kumar

Introduction to Semiconductor Materials and devices

Arunbhaarat S

Semiconductor.pptx

AnsumwiBoro2

Presentation report for Intrinsic & Extrinsic , N-type & P-type and Forward& ...

Obaid ur Rehman

Solids_And_Semiconductor_Devices_123.pdf

anuragyadav8778

KARAN FILE 1.docx

ks8924367

A BASIC INTRODUCTION TO SEMICONDUCTOR DEVICES - THE

Winston Bent A.S.S.

Diode.ppt

AbyThomas54

Solids_And_Semiconductor_Devices_1.ppt

ssuserfa217a

Class 12th Solids and semiconductor devices part 1

Arpit Meena

Edc

Nikil Dondapati

solids_and_semiconductor_devices_1.ppt

mragarwal

Solids & Semiconductor Devices

CHETAN D. GANDATE

Semiconductor Devices Class 12 Part-1

Self-employed

Semiconductors: Crystalline material: Mechanical properties, Energy band theory, Fermi levels; Conductors, Semiconductors & Insulators: electrical properties, band diagrams. Semiconductors: intrinsic & extrinsic, energy band diagram, P&N-type semiconductors, drift & diffusion carriers. Diodes and Diode Circuits: Formation of P-N junction, energy band diagram, built-in-potential, forward and reverse biased P-N junction, formation of depletion zone, V-I characteristics, Zener breakdown, Avalanche breakdown and its reverse characteristics; Junction capacitance and Varactor diode. Simple diode circuits, load line, linear piecewise model; Rectifier circuits: half wave, full wave, PIV, DC voltage and current, ripple factor, efficiency, idea of regulation.

Semiconductor Diodes and Circuits

Darwin Nesakumar

Ähnlich wie 1- How does diffusion current depend on the doping concentration- How.docx (20)

semiconductor

BEEIE UNIT IV PPT.ppt

Basic Electronics UNIt1 PPT

NMR Spectroscopy

Introduction To Photovoltaic Device Physics

BE UNIT 1 PPT.ppt

Introduction to Semiconductor Materials and devices

Semiconductor.pptx

Presentation report for Intrinsic & Extrinsic , N-type & P-type and Forward& ...

Solids_And_Semiconductor_Devices_123.pdf

KARAN FILE 1.docx

A BASIC INTRODUCTION TO SEMICONDUCTOR DEVICES - THE

Diode.ppt

Solids_And_Semiconductor_Devices_1.ppt

Class 12th Solids and semiconductor devices part 1

Edc

solids_and_semiconductor_devices_1.ppt

Solids & Semiconductor Devices

Semiconductor Devices Class 12 Part-1

Semiconductor Diodes and Circuits

Mehr von tpaula2

How can I calculate the missing amounts for each of the independent ca.docx

tpaula2

How can other countries respond to international piracy? Solution a.) Strengthening the maritime security is important to protect the shipping and humanitarian assistance.Gunboats alone won\'t be sufficient.As the pirates can\'t be forced to walk down a plank since there is a legal vacuum to be filled. b.) The suspects should be held for court trials in the country that they come from or in the country where the seized ship comes from. c.) Else they should be held for trials in the country whose ships seized them.Or the other option is to send them for trials in the region where thry have been arrested by the local police. d.) International countries can now think of using the latest technologies to catch these pirates and to put an end to piracy. e.) Though this is not na easy task,the pirates have their vulnerabilities which need to be identified and the international governments should make use of this as their advantage and exploit them. .

How can other countries respond to international piracy-Solutiona-) St.docx

tpaula2

How do I block a certain range of IP addresses in a CENTOS server from the command line for Apache users? Solution How do I block a certain range of IP addresses in a CENTOS server from the command line for Apache users?:- By using iptables you can block particular IP address or a range of IP addresses on your server to protect your server. In this way you can block IPs which are in listed on your secure log for unnecessary login attempts or something like that. Thatâ€™s why, simply you can secure your server from unwanted connections. To block an IP address from server, you need to add blocking rules to your iptables INPUT chain. The important iptables switches required to perform this actions are; How do I block an IP address on CENTOS server ? You can simply block by using the above mentioned switches. See the below pasted examples; Syntax: Example: Where xx.xx.xx.xx is the IP address which you want to block. Then save the newly added rules to iptables. How can I block a particular PORT for a particular IP on your CENTOS Linux server ? Yes, in some situations we have to block some ports to a particular IP address. We can simply manage this from command-line using the iptables command. Additional switches required; Syntax: Example: Where port 25 will be blocke for that particular IP address. .

How do I block a certain range of IP addresses in a CENTOS server from.docx

tpaula2

How can we reduce software requirement errors ? Solution If we want to reduce the error firstly we have to identify the error for improve the quality of software. Finding and fixing a software problem after delivery is often 100 times more expansive than finding and fixing it during requirement phase. Requirement errors can be categorized into two main types: specification generation errors and unwanted/unnecessary/incorrect user functionality. We are using two step methodology for reduce the requirement errors. Step 1: Operational demonstration for user requirement Involves user during early phases, as opposed to the later phases or after system delivery Eliminate unnecessary and incorrect functionalities Find how much risk on that phase and manage that risk (risk management) Step 2: Software inspection conducted on requirement specification Ensure user and developer requirements are accurately specified Detect errors associated with all phases regarding development Reduce software development cost by detecting errors early .

How can we reduce software requirement errors -SolutionIf we want to r.docx

tpaula2

How do arrays compare with variables and how do they differ? Give a simple example (Programming Logic and Design) Solution Arrays : Array is a homogeneous (same kind of elements) collection of elements in memory in a contagious locations. The first element of array is stored at index =0 and last element is stored at index=size-1. For example, int marks [5] ={10,20,30,40,50}; 10 20 30 40 50 Variable : The variable is a name given to memory location in a computer memory. The element is stored in that memory location can be pointed by the variable name. For example, int id=10; Where id is a name given to the memory location where the value 10 is stored. Comparison of array elements with variables : Since arrays are stored index based, the elements are compared using index location of the element in an array. int min=50; for(int i=0;i<5;i++) //comparison of array element with variable, min if(marks[index]==min) //code follows .

How do arrays compare with variables and how do they differ- Give a si.docx

tpaula2

How can the use of Internet search engines to locate information about people be controversial from a privacy perspective? Solution Using search engines to lacate informantion about people is controversial from privacy perspective because, it is effecting the wealth of the personal information.here the privacy is the issue because almost anything about an indivudual can be known through the search engines. Ordinary people put their data on the Internet for various reasond like, connectivity with family and friends, educational forums, research forums etc. All these are the puroses due to which personal information of an individual is put over Internet. To make the access easy these search engines record all sorts of data which include personal information also. These search engines are useed for malicious purposes. Using search engines many people can know the movement of other people. Let us consider one example.As in today\'s world every one uses mobile phone with internet connection,from a normal person to the higher official, celebrities every one uses Internet over phone. let us consider a celebrity has been to a coffee shop. If an admirer of the celebrity is willing to know where the celebrity is, he can know with the help of the search engines. There are some websites which help you follow a particular person through internet. using GPS the current location of the celebity can be traced and if the admirer in the same geographical domain he can even reach the celebrity without his knowledge and permission into his personal space. This is called as stalking. there are many websites which help you stalk. This example explains how controversial locating information through search engines with respect to the privacy.There are many other issues with respect to privacy for further queries kindly get back .

How can the use of Internet search engines to locate information about.docx

tpaula2

How change in a corporation\'s natural and societal environments can affect the corporation through its task environment. Explain in detail and provide an example. Solution Corporate Interests And Actions Can Harm The Environment In the developing world, many development projects have come under criticism fordamaging the environment, even when they are presented as helping it. Concerns haveincreased in line with the rising investment in the developing world. In the late 1990s attention was drawn to a United Nations (U.N.) project to get corporate collaboration/sponsorship in development projects, supporting human rights and the environment, and being generally more responsible and accountable. However it fell under a lot of criticism for involving corporations that are known to have contributed or caused some of the more severe human rights and environment problems, allowing these companies to attempt to repair their tarnished image, while not actually tackling the problems. In May 2002, the United Nations Environment Program (UNEP) released an extensivereport saying that, .

How change in a corporation-'s natural and societal environments can a.docx

tpaula2

How can you prevent intruders from accessing your wireless network? a) Encrypt network traffic with WPA or WEP b) Restrict access to trusted MAC addresses Both None of the above Solution a)Encrypt network traffic with WPA or WEP Explanation: Restricting wireless access prevents intruders from connecting to your network.Wired Equivalent Privacy (WEP) security is the most basic and simplest form of wireless security. It is the most often used, but least secure of the available options. WEP Shared Key authentication and WEP data encryption block all but the most determined eavesdropper .

How can you prevent intruders from accessing your wireless network- a).docx

tpaula2

How are standing waves similar to beats and how are they different? Typing only, no handwriting Solution Standing waves and beats are similar in many aspects both have same amplitude .but in standing waves frequencies of both waves are same but in beats two waves have nearly equal frequencies not exactly same. Standing waves propagate in same direction. But in stationary waves propagate in different direction. Standing wavea also known as stationary waves. When two sets of progressive waves trains of the same type (i.e. both longitudinal or both transverse) having the same amplitude and same time period/ frequency/ wavelength travelling with same speed along the same straight line in opposite directions superimpose, a new set of waves are formed. These are called stationary waves or standing waves. When two sound waves of equal amplitude and nearly equal frequencies travelling in a medium along the same direction superimpose on each other, the intensity of the resultant sound at a particular position rises and falls alternately with time. The phenomenon of alternate variation in the intensity of sound with time at a particular position, when two sound waves of newly equal frequencies and amplitudes travelling in the same direction superimpose on each other. .

How are standing waves similar to beats and how are they different- Ty.docx

tpaula2

How are corporate abuse of power corporate fraud, and corporate economic exploitation interrelated? Which segments of society seem to bear the largest burden from these forms of corporate crime, and which segments seem least vulnerable? Which of these forms of corporate crime concern you most, and which concern you least, and why? Solution Nader Proposes Crackdown on Corporate Crime, Fraud and Abuse The US needs to crackdown on corporate crime, fraud and abuse that have in the last four years looted and drained trillions of dollars from workers, investors, pension holders and consumers. Among the reforms needed are resources to prosecute and convict the corporate executive crooks and to democratize corporate governance so shareholders have real power; pay back ill-gotten gains; rein in executive pay; and enact corporate sunshine laws, among others. Below are twelve initial steps for an effective crackdown on corporate crime, fraud and abuse. The Nader campaign will return to this issue and expand the discussion on the solution to corporate crime and abuse. Twelve Steps to an Effective Crackdown on Corporate Crime While Smith wrote the earlier piece in 1994, it is applicable today as well, with wave of news about .

How are corporate abuse of power corporate fraud- and corporate econom.docx

tpaula2

How can biometric technology be used to fight cybercrime and cyber related crimes? What controversies does the use of this technology raise? Solution Biometric technology is a measurement of unique behavioural and physical characteristics of a human required for personal identification since each individual has a unique identitiy. Features like DNA, face detection, finderprints, voice recognition, palm prints etc. This technology is used largely in figting and preventing crimes. Biometric technology in Cyber crime works as below: 1. Record - Record basic data of the user, then capture image of voice of the user using a sensor or scanner. 2.Store- Store the image or voice recorded as a graph using a computer 3.Compare - Compare the stored information with recorded information and either accept or reject the authenticated information.This requires a specific software to analyse the characteristics of a code and compare. Controversies:Use of biometric technology is not without controversies. 1. Many people fear that the Government of Cyber Crime Cell may use biometrics to track people during everyday transactions. 2.There is chance of personal identification information being misplaced. 3. There is fear in hackers using biometrics to hack one\'s personal data. .

How can biometric technology be used to fight cybercrime and cyber rel.docx

tpaula2

Holmes, CPA, assisted Williams Corporation in preparing its financial statements and gave Williams permission to use Holmes\'s name in communications containing these financial statements. If Holmes did not audit the financial statements, what type of opinion should be expressed? a) Unmodified opinion with an other-matter paragraph limiting the level of assurance provided by Holmes b) Qualified opinion with an additional paragraph indicating a circumstance-imposed scope limitation c) Disclaimer of opinion because Holmes did not audit the financial statements d) Homes is not required to issue a report or opinion in this situation Solution d) Homes is not required to issue a report or opinion in this situation. This is not a financial data that needs to b audited but a mere performance of accounts preparation by Holmes, which does not amount to qualification in the audit report of Williams Corporation. The auditor is not restricted to access of any information or data as required b him. Hence, this can neither be treated as a disclaimer. .

Holmes- CPA- assisted Williams Corporation in preparing its financial.docx

tpaula2

HNO2 has a Ka of 4.00x10^-3. What is the pH of a solution prepared by adding 1.5 moles of HNO2 to enough water to Make 1 liter of solution HNO2 has a Ka of 4.00x10^-3. What is the pH of a solution prepared by adding 1.5 moles of HNO2 to enough water to Make 1 liter of solution Solution Concentration of HNO2,c= number of moles/volume in L c=1.5 moles/1 L = 1.5 M Let a be the dissociation of the weak acid HA <---> H + + A- initial conc. c 0 0 change -ca +ca +ca Equb. conc. c(1-a) ca ca Dissociation constant , Ka = ca x ca / ( c(1-a) = c a2 / (1-a) In the case of weak acids a is very small so 1-a is taken as 1 So Ka = ca2 ==> a = ? ( Ka / c ) Given Ka = 4.00x10^-3 c = concentration = 1.5 M Plug the values we get a = 2.67x10^-3 [H+]=ca=4*10^-3 M pH=-log[H+]= 2.40 .

HNO2 has a Ka of 4-00x10^-3- What is the pH of a solution prepared by.docx

tpaula2

Hi, Can you answer this question. Please show all your work and show important comment sections ( Please comment what the codes of lines do!!). Please avoid command fucntions like nargin function command. Code w/ MATLab 2015a or higher. I know hw to do the math but failed toomany times at coding. THank you again!!! =) Write a function file for the bisection method to find the roots of a function. Test your code on e a functionrition. Determine what cos(x) = x 5. the following function. Determine what your inputs and outputs should be. Solution The given Matlab code uses the string facility to pass the name of a function to bisection. A % indicates the comments function d = bisection(fn,a1,b1,tol) % d = bisection(\'fn\',a1,b1,tol) % % Â Â This function locates a root of the function fn on the interval %Â Â [a1,b1] to within a tolerance of tol. % Evaluating the function to the endpoints and checking if it % changes sign. Fa1 = feval(fn,a1); Fb2 = feval(fn,b1); if Fa1*Fb2 >= 0 error(\'Tis fn have opposite signs at a and b\') end % done is used to flag the unlikely event that we find % the root exactly before the interval has been sufficiently reduced. done = 0; % Bisect the interval d = (a1+b1)/2; % Main loop while abs(a1-b1) > 2*tol & ~done % Evaluate the function at the midpoint Fc1 = feval(fn,d); if Fa1*Fc1 < 0Â Â Â Â Â Â % The root is left of d b1 = d; Fb1 = Fc1; d = (a1+b1)/2; elseif Fc1*Fb1 < 0Â Â % The root is right of d a1 = d; Fa1 = Fc1; d = (a1+b1)/2; elseÂ Â Â Â Â Â Â Â Â Â Â Â Â Â % the root done = 1; end end the file is named as bisect.m, it can be run as follows: .

Hi- Can you answer this question- Please show all your work and show i.docx

tpaula2

Hi! I think the answer is C Outsource the software. I juyst wanted to have some opinion from the experts. Thanks! If your software runs on an IBM mainframe, and you want to adapt it for Windows desktop PCs, you must _____ the software. A. filter B. port C. outsource D. crowdsource Files can be retrieved from a dump backup by using gunzip. True or False I think the answer is FALSE Solution A filter is a computer program or subroutine to process a stream, producing another stream A port is an endpoint of communication in an operating system Movement of software from one platform to another is called outsourcing(This is a common word in terms of business process ) . So answer is C (Outsourcing) gunzip takes a list of files on its command line and replaces each file whose name ends with .gz, -gz, .z, -z, _z or .Z.So answer is false . .

Hi! I think the answer is C Outsource the software- I juyst wanted to.docx

tpaula2

Hi all! someone help me pls Fraud examination I need to write an essay with five paragraphs Chapter 5, Case 9 Sally was aware of a fraud being committed by one of her coworkers, but she never reported it. What are some possible reasons for her hesitancy to come forward? Solution Fraud is an act of unlawful gain without hurting physically to others. This is a secret act of stealing benefits. Fraud was noticed but not reported due to the following reasons: Self-centered : The person might be self-centered. She might have no interest of seeing other things apart from her duty. Unaware of consequence : The person might have no knowledge of consequence of fraud. Fraud not only creates loss of wealth, but it is also the loss of net income on regular basis. She might be unaware of such loss. Threat of life : The person might have belief that if the fraud is reported, her life would be in danger. In that case she will not report it. Corruption all rounds : If everybody is corrupted, reporting would be useless. Therefore, she may be reluctant to do reporting. Well-known coworker : If the coworker is well-known, the person might be manipulated not to disclose the fraud. .

Hi all! someone help me pls Fraud examination I need to write an essay.docx

tpaula2

Herbie Corp\'s Balance Sheet showed the following at 12/31/13 Common Stock, $10 par $100,000 APIC $50,000 Retained Earnings $20,000 A cash dividend is declared on 12/31/13, and is payable on 1/20/14 to shareholders of record as of 1/10/14. Show all appropriate journal entires assuming a cash dividend of $1 per share Show all appropriate entries for a $5 per share dividend Solution 1. Journal entry to record dividend of $1 per share. No. of shares is 10,000 ($100,000/$10) 31-12-2013 - Entry for dividend declaration will be recorded Retained earnings (10,000X1) Debit 10,000 To Dividend payable Credit 10,000 20-1-2014, Entry to record dividend payment. There will be no entry on 10-1-2014 i.e. the record date. As record date merely determines the names of the stakeholders that will receive dividend. Dividend payable Debit 10,000 To Cash Credit 10,000 2. Cash dividend of $5 per share. Retained earnings can be used for dividend payments. APIC cannot be used because the Company cannot declare dividends more than retained earnings. In this case, Retained earnings balance will be negative. 31-12-14 Retained earnings Debit 50,000 To Dividend payable Credit 50,000 20-1-14 Dividend payable Debit 50,000 To cash Credit 50,000 .

Herbie Corp-'s Balance Sheet showed the following at 12-31-13 Common S.docx

tpaula2

Here is a list of the main characters in Shakespeare\'s Romeo and Juliet. The first seven characters are male and the last four are female. Escalus, prince of Verona Paris, kinsman to the prince Romeo, of Montague Household Mercutio, friend of Romeo Benvolio, friend of Romeo Tybalt, nephew to Lady Capulet Friar Lawrence, a Franciscan Lady Montague, of Montague Household Lady Capulet, of Capulet Household Juliet, of Capulet Household Juliet\'s Nurse A total of 13 male and 7 female actors are available to play these roles. How many possible casts are there? (All roles are to be played by actors of the same gender as the character.) I have worked this out multiple times and just can\'t get it right...please help. I would like the solution as well as how you came to it if possible. Solution We need to combine a choice of 7 out of 13 possible male actors with a choice of 4 out of 7 possible female actors. 13C7 * 7C4 = [13! / (7! 6!)] * [7! / (4! 4!)] = [13*12*11*10*9*8 / (6*5*4*3*2*1)] * [7*6*5 / (4*3*2*1)] = 1716 * 8.75 = 15015 possible casts. .

Here is a list of the main characters in Shakespeare-'s Romeo and Juli.docx

tpaula2

1. How many ATOMS of sulfur are present in 2.25 moles of sulfur trioxide ? ____ atoms of sulfur. 2. How many MOLES of oxygen are present in 1.01Ã—1023 molecules of sulfur trioxide ? ___moles of oxygen. Solution Ans. #1. 1 mol SO 3 consists of 1 S-atoms. So, moles of S in SO 3 = 2.25 mol Now, Number of S-atoms = Moles of S x N A = 2.25 mol x (6.022 x 10 23 atoms/ mol) = 1.355 x 10 24 atoms #2. Moles of SO 3 = Number of SO 3 molecules / N A = 1.01 x 10 23 molecule / (6.022 x 10 23 molecules / mol) = 0.1677 mol # 1 SO 3 molecule consists of 3 O-atoms. So, Moles of O = 3 x Moles of SO 3 = 3 x 0.1677 mol = 0.5032 mol .

1- How many ATOMS of sulfur are present in 2-25 moles of sulfur trioxi.docx

tpaula2

1. How does having a scope and WBS help project teams during project execution? Why is it difficult to develop good plans? 2. Name the main planning tasks performed as part of project integration management? What are the main documents created, and what should they contain? 3. Identify the planning tasks performed as part of project time management. What is the critical path for a project? Why is it important to know which tasks are on the critical path? How would you gain support from the project sponsor on the tasks on the critical path? 4. During project cost management, what are the main planning tasks performed? Identify the difference between a cost estimate and a cost performance baseline. Why is it important to have clear ground rules and assumptions for a cost estimate? Solution 1. How does having a scope and WBS help project teams during project execution? Why is it difficult to develop good plans? The main purpose of project planning is to guide project execution. To guide execution, plans must be realistic and useful, so a fair amount of effort must go into the project planning process (Schwalbe, 2013). Planning is often the most difficult and unappreciated process in project management because people often do not want to take the time to plan well, but theory and practice show that good planning is crucial to good execution (Schwalbe, 2013). 2. Name the main planning tasks performed as part of project integration management? What are the main documents created, and what should they contain? Project integration management involves coordinating all the project management knowledge areas throughout a project .

1- How does having a scope and WBS help project teams during project e.docx

tpaula2

Mehr von tpaula2 (20)