Q4) A semiconductor photodetector is sensitive to visible red light (has about 650 nm wavelength). a) What is the max. value of its bandgap energy? b) If 0,2 cm2 area of this semiconductor is illuminated with red light whose intensity is 3 mW/cm2, what is the # of electron-hole pairs generated per second? (Assume that each photon generates one EHP.) c) Calculate the initial wavelength of photons which are emitted from Si crystal as a result of e-h recombination. Is it in the visible range?

Q4) A semiconductor photodetector is sensitive to visible red light (has about 650 nm wavelength). a) What is the max. value of its bandgap energy? b) If 0,2 cm2 area of this semiconductor is illuminated with red light whose intensity is 3 mW/cm2, what is the # of electron-hole pairs generated per second? (Assume that each photon generates one EHP.) c) Calculate the initial wavelength of photons which are emitted from Si crystal as a result of e-h recombination. Is it in the visible range?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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