Which of the below material has the character if temperature increases conductivity Increases ?
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- What is extrinsic semiconductor? Mention explain its formation with suitable diagram. (a) Write any five differences between Conductor, Semiconductor ind Insulator.How many free electrons does a p-type semiconductor contain?Please select one:a.Same number as holesb.Manyc.Noned.Only with thermal energyThese electrons are those that participate in the conduction process while this other charged entity is found in semiconductors and insulators. E. None of the above C. Free electrons and holes A. Holes and free electrons B. Moving electrons and ions D. Electron clouds and holes Other:
- How many free electrons does a p-type semiconductor contain?Please select one:a.Same number as holesb.Manyc.Noned.Only those produced with thermal energyWhen a pure semiconductor is heated, its resistance .............. 1. Goes up 2. Goes down 3. Remains the same 4. Can't sayQ1\ Explain in detail the effect of applying a voltage source on a pure semiconductor and dopped semiconductor. Explain with the help of drawing how these types are employed to conduct the charges. 02)
- In a doped semiconductor, Please choose one: a. there are only holes b. there are as many electrons as holes c. no free electrons D. free electrons are generated thermally to. answers B. and D.How many valence electrons does a semiconductor has? a. 2 b. 3 c. 6 d. 4 When pure semiconductor is heated, its conductance a. Goes up b. Goes down C. Remains the same d. Can't say When a trivalent impurity is added to a pure semiconductor, it becomes a. A conductor b. An intrinsic semiconductor C. P-type semiconductor d. N-type semiconductorCompare the temperature dependence of the conductivity for metals and intrinsic semiconductors. Briefly explain the difference in behavior.
- PROBLEM 2 Two semiconductor materials A and B shown in the given figure, are made by doping germanium crystal with arsenic and indium respectively. The two are joined end connected to a battery as shown in figure. Is the junction forward biased or reverse biased? A BHow do semiconductors conduct electricity? What is a”hole”? How can one engineer the conductivity of semiconductors?Minor impurities of group 13 or group 15 elements are introduced in order to improve the conducting ability of the semiconductor silicon. Using a band diagram, explain how each of these types of dopants alters the conductivity of the semiconductor.