Blue LEDS are made from In,Ga1-N semiconductors with a band gap in eV given by E, = 3.40 – 3.75x + x2 (b) Given that the wavelength of blue visible light is 470 nm, what would be the value of x necessary to make a blue LED? Note the solutions to the quadratic equation 0 = ax? + bx +c are given by -b +Vb2 – 4ac x = 2a

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
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Blue LEDS are made from In,Ga1-N semiconductors with a band gap in eV given by
Eg
= 3.40 – 3.75x + x2
(b)
Given that the wavelength of blue visible light is 470 nm, what would be the value
of x necessary to make a blue LED?
Note the solutions to the quadratic equation 0 =
ax? + bx + c are given by
-b + Vb2 – 4ac
X =
2a
Transcribed Image Text:Blue LEDS are made from In,Ga1-N semiconductors with a band gap in eV given by Eg = 3.40 – 3.75x + x2 (b) Given that the wavelength of blue visible light is 470 nm, what would be the value of x necessary to make a blue LED? Note the solutions to the quadratic equation 0 = ax? + bx + c are given by -b + Vb2 – 4ac X = 2a
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