You have learned that if the energy of radiation incident onsemiconductor is equal to or above the bandgap energy, the light will beabsorbed. For the various radiation types in the table below, state if theradiation will be absorbed or passed through each semiconductor.PROBLEM 5AbsorbNoSemiconductorIncident FrequencyYesGaAs5x1017 HzGe2x1014 HzGe1013 HzSix1016 Hz5x1010 HzPbSList of band gaps of semiconductor materials.Band gap (eV)@ 302KGroup MaterialSymbolIVDiamond5.5IVSiliconSi1.11IVGermaniumGe0.67III-VGallium(III) nitrideGaN3.4III-VGallium(III) phosphide GaP2.26III-VGallium(II) arsenideGaAs1.43IV-VSilicon nitrideSi,NAIV-VILead(II) sulfidePbS0.37IV-VISilicon dioxideSio,Copper(l) oxideCu,02.1

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You have semiconductor is equal to or above the bandgap energy, absorbed. For the various radiation types in the table below, state if the radiation will be absorbed or passed through each semiconductor. Incident Frequency Semiconductor Absorb Yes No 5x1017 Hz GaAs 2x1014 Hz Ge 1013 Hz Ge

You have semiconductor is equal to or above the bandgap energy, absorbed. For the various radiation types in the table below, state if the radiation will be absorbed or passed through each semiconductor. Incident Frequency Semiconductor Absorb Yes No 5x1017 Hz GaAs 2x1014 Hz Ge 1013 Hz Ge

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter1: Atomic Structure

Section: Chapter Questions

Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?

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Concept explainers

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).

Question

100%

You have learned that if the energy of radiation incident on
semiconductor is equal to or above the bandgap energy, the light will be
absorbed. For the various radiation types in the table below, state if the
radiation will be absorbed or passed through each semiconductor.
PROBLEM 5
Absorb
No
Semiconductor
Incident Frequency
Yes
GaAs
5x1017 Hz
Ge
2x1014 Hz
Ge
1013 Hz
Si
x1016 Hz
5x1010 Hz
PbS
List of band gaps of semiconductor materials.
Band gap (eV)
@ 302K
Group Material
Symbol
IV
Diamond
5.5
IV
Silicon
Si
1.11
IV
Germanium
Ge
0.67
III-V
Gallium(III) nitride
GaN
3.4
III-V
Gallium(III) phosphide GaP
2.26
III-V
Gallium(II) arsenide
GaAs
1.43
IV-V
Silicon nitride
Si,NA
IV-VI
Lead(II) sulfide
PbS
0.37
IV-VI
Silicon dioxide
Sio,
Copper(l) oxide
Cu,0
2.1

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