Problem 1. Define doping. 2. What is the difference between a pentavalent atom and a trivalent atom? 3. What are other names for the pentavalent and trivalent atoms? 4. How is an natyne can
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- Problem 1. Define doping. 2. What is the difference between a pentavalent atom and a trivalent atom? 3. What are other names for the pentavalent and trivalent atoms? 4. How is an n-type semiconductor formed? 5. How is a p-type semiconductor formed? 6. What is the majority carrier in an n-type semiconductor? 7. What is the majority carrier in a p-type semiconductor? 8. Describe forward bias of a diode.A noncontributory semiconductor has some holes in room temperature. What causes these holes?Please select one:a.Valuation electronsb.Dopingc.Free electronsd.Thermal energyAn intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Group of answer choices a.) Valence electrons b.) Thermal energy c.) Doping d.) Free electrons
- When a pentavalent impurity is added to a pure semiconductor, it becomes ......... 1. An insulator 2. An intrinsic semiconductor 3. p-type semiconductor 4. n-type semiconductorA p-type semiconductor joined to an n-type semiconductor ... Pick those that apply. Will not allow current to flow in either direction. Has electron current flowing from the n-type to the p-type material Makes a diode Allows positive current flow from the p-type to the n-type materialQUESTION 1 Provide an example each for a trivalent and pentavalent element. Describe the doping process of Silicon (Si) to obtain p-type and n-type semiconductor material. a) b) c) Explain forward bias and reverse bias conditions of an ideal p-n junction diode. Sketch the I-V characteristic of Si and Ge diode. Discuss why Si based semiconductor is move favored in production of solid state devices.
- An addition of trivalent impurity to a semiconductor creates many a. Holes b. Free electrons c. Valence electrons d. Bound electrons A hole in a semiconductor is defined as a. A free electron b. The incomplete part of an electron pair bond C. A free proton d. A free neutron As the doping to a pure semiconductor increase, the bulk resistance of the semiconductor a. Remains the same b. Increases C. Decreases d. None of the aboveWhich of the following statements is false? A. We can create an extrinsic semiconductor materials by adding impurities to an intrinsic semiconductors. B. A pentavalent impurity addition to an intrinsic semiconductor gives N-type semiconductor. C. N-type semiconductor has more holes than the free electrons that contribute to the conduction of current. D. The P-type semiconductors have more holes than the free electrons.a) What is n-type semiconductor materials? What are the majority and the minority cariers? b) What is p-type semiconductor materials? What are the majority and the minority cariers? c) What is depletion region of a p-n junction diode? d) Describe in your own words the forward-bias and reverse- bias conditions of a p-n junction diode. e) Draw a Diode Symbol and label the anode and the cathode. Si Ge 2 ka f) Find V, in the circuit shown in +20 V 2 k2 15V Fig. Fuad Al-Mannai EENG261 Page 1
- Sketch the energy band diagrams for the n-type and p-type semiconductors and explain the difference between them.Choose the doping material that will cause silicon to become a p-type semiconductor. A. Ge B. As C. Te D. BHow 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 semiconductor