HW2 Spring 2014

Solids are made of nuclei and electrons much of our

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Unformatted text preview: 1. Solids are made of nuclei and electrons. Much of our information about solids is found by studying them According laws electron using other particles like = (photons) and neutrons. ticles, with to the E = of quantumwhere E light mechanics, all particles act like waves and waves act like par the relation h/ p, is the wavelength, p is the momentum, and h is Planck's constant. The relation of energy and neutron momentum for E= photon E= E= particles like electrons and neutrons is E p 2 / 2m , and for photons is E the energies in eV for each of the particles below for the wavelength shown: E= = 0.1 nm Particle pc . Give = 1.0 nm 2. Based on Fig. 3.3 (Streetman’s book), explain why the bandgap energy of a diamond crystal would electron E= E= increase (or decrease) with respect to= that at room temperature when it is cooled to liquid nitrogen neutron E E= temperature. photon E= E= 3. (a) Using Appendix III, which of the listed semiconductor in the table has the largest band gap? The small...
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This document was uploaded on 02/18/2014.

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