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| Recap |
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this lecture you have learnt the following |
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Summary |
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In this lecture you have been introduced to the band structure of solids . The band structure deals with the closely spaced energy levels of electrons in various groups or bands of levels, the gaps between the bands, the effect of temperature on the occupation of levels, as well as the influence on the band occupancy by dopants. Electron rich dopants lead to n-type semiconductivity wherein the electrons are the charge carriers. In p-type semiconductivity, the charge carriers are +ve charges. The energy levels of a model of a band were obtained and some details of obtaining energy levels and coefficients of AOs in the band MOs were given. The Fermi-Dirac distribution was distinguished from the temperature Boltzmann distribution and some ideas relevant to superconductivity were outlined. |
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Congratulations, you have finished lecture 20. To view the next lecture select it from the left hand side menu of the page |
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