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Page 822
If the energy of thermal motion is sufficient , then a part of the electrons are thrown into the conduction band . Such a system may serve as a conductor of electric current . Current is able to flow both due to variation of the ...
If the energy of thermal motion is sufficient , then a part of the electrons are thrown into the conduction band . Such a system may serve as a conductor of electric current . Current is able to flow both due to variation of the ...
Page 823
Distribution of the electrons on the energy levels . band Creation of electron hole pair as a result of the absorption of the photon hv a b Fig . 3. Processes of the interaction with light . a , Resonance absorption ; b , stimulated ...
Distribution of the electrons on the energy levels . band Creation of electron hole pair as a result of the absorption of the photon hv a b Fig . 3. Processes of the interaction with light . a , Resonance absorption ; b , stimulated ...
Page 825
The electrons and holes obtained give their excess energy to the atoms of the lattice and accumulate in the levels near the edges of the corresponding bands . In this case a state with negative temperature may be created ( 14 , 15 ) .
The electrons and holes obtained give their excess energy to the atoms of the lattice and accumulate in the levels near the edges of the corresponding bands . In this case a state with negative temperature may be created ( 14 , 15 ) .
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