Introduction to Solid State Physics |
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Page 364
Charles Kittel. 364 Table 1 Values of the energy gap between the valence and conduction bands in semiconductors , at absolute zero and at room temperature ( i : = indirect gap ; d = direct gap ) Eg , ev Eg , ev Crystal Gap 0 ° K 300 ° K ...
Charles Kittel. 364 Table 1 Values of the energy gap between the valence and conduction bands in semiconductors , at absolute zero and at room temperature ( i : = indirect gap ; d = direct gap ) Eg , ev Eg , ev Crystal Gap 0 ° K 300 ° K ...
Page 365
... energy ; the threshold determines the energy gap as Eg = hw ,. In ( b ) the optical absorption is weaker near the threshold : at the photon energy hoE + h a photon is absorbed with the creation of three particles : a free electron , a ...
... energy ; the threshold determines the energy gap as Eg = hw ,. In ( b ) the optical absorption is weaker near the threshold : at the photon energy hoE + h a photon is absorbed with the creation of three particles : a free electron , a ...
Page 615
... energy gap and exciton binding energy are de- Huced from the shape of the absorption curve : he gap E , is 1.521 ev and the exciton binding energy is 0.0034 ev . Eg Eg - Eb Eb 0 Absorption coefficient a in 10 * cm - 1 1.2 1.1 1.0 0.9 ...
... energy gap and exciton binding energy are de- Huced from the shape of the absorption curve : he gap E , is 1.521 ev and the exciton binding energy is 0.0034 ev . Eg Eg - Eb Eb 0 Absorption coefficient a in 10 * cm - 1 1.2 1.1 1.0 0.9 ...
Contents
CRYSTAL STRUCTURE | 1 |
CRYSTAL DIFFRACTION AND THE RECIPROCAL LATTICE | 43 |
CRYSTAL BINDING | 95 |
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absolute zero absorption alkali halide alloy antiferromagnet applied field atoms axis boundary Brillouin zone calculated Chapter charge components conduction band conduction electrons crystal structure cubic density dielectric constant dielectric function diffraction dipole direction dislocation dispersion relation effective mass elastic electric field electron concentration electron gas energy gap equation equilibrium excited exciton experimental F center Fermi surface ferroelectric ferromagnetic Figure free electron frequency function given heat capacity hole impurity interaction ionic lattice constant lattice points low temperatures magnetic field magnetic moment magnon metal modes momentum motion nearest neighbors neutron normal nuclear optical orbital paramagnetic particle phase phonon Phys plane polarization positive potential primitive cell quantum reciprocal lattice vector region resonance result room temperature scattering semiconductor shown in Fig space specimen sphere superconducting theory thermal tion transition unit vacancy valence band velocity wavefunction wavelength wavevector x-ray