a) An extrinsic semiconductor may contain both donor and acceptor atoms and their related donor and acceptor levels, respectively, in its energy band diagram. Co doping of suitable dopants in Gallium arsenide (GaAs), which has a band gap, E, of 1.42 ev, can produce a donor level around 0.02 ev below the conduction band as well as an acceptor level of around 0.01 eV above the valence band. If an electron at the donor level goes down to an empty acceptor level, calculate the wavelength of the photon emitted (in nm). Sketch a simple energy band diagram to illustrate the transition (Given: Plank's constant 4.13567 x10eV.a and hos 1240 eV.nm)
a) An extrinsic semiconductor may contain both donor and acceptor atoms and their related donor and acceptor levels, respectively, in its energy band diagram. Co doping of suitable dopants in Gallium arsenide (GaAs), which has a band gap, E, of 1.42 ev, can produce a donor level around 0.02 ev below the conduction band as well as an acceptor level of around 0.01 eV above the valence band. If an electron at the donor level goes down to an empty acceptor level, calculate the wavelength of the photon emitted (in nm). Sketch a simple energy band diagram to illustrate the transition (Given: Plank's constant 4.13567 x10eV.a and hos 1240 eV.nm)
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:a) An extrinsic semiconductor may contain both donor and acceptor atoms and their related
donor and acceptor levels, respectively, in its energy band diagram. Co doping of suitable
dopants in Gallium arsenide (GaAs), which has a band gap, E, of 1.42 ev, can produce a
donor level around 0.02 ev below the conduction band as well as an acceptor level of around
0.01 ev above the valence band. If an electron at the donor level goes down to an empty
acceptor level, calculate the wavelength of the photon emitted (in nm). Sketch a simple energy
band diagram to illustrate the transition (Given: Plank's constante 4.13567 x10
hos 1240 eV nm)
eV.s and
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