GaAs is a good material to fabricate LED (Light Emitting Diode) , whereas Si is not. (i) Briefly explain the reason by introducing the concept of band structure. (Hint: E-k diagram) (ii) In Si, how does a free electron and a hole recombine, and when they do, how does the energy dissipate?

GaAs is a good material to fabricate LED (Light Emitting Diode) , whereas Si is not. (i) Briefly explain the reason by introducing the concept of band structure. (Hint: E-k diagram) (ii) In Si, how does a free electron and a hole recombine, and when they do, how does the energy dissipate?

Electric Motor Control

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ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter59: Motor Startup And Troubleshooting Basics

Section: Chapter Questions

Problem 12SQ: How is a solid-state diode tested? Explain.

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GaAs is a good material to fabricate LED (Light Emitting Diode) , whereas Si is not.

(i) Briefly explain the reason by introducing the concept of band structure. (Hint: E-k diagram)

(ii) In Si, how does a free electron and a hole recombine, and when they do, how does the energy dissipate?

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