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EE130/230A Discussion 1

EE130/230A Discussion 1. Peng Zheng. Crystallographic Notation. Miller Indices:. h : inverse x -intercept of plane k : inverse y -intercept of plane l : inverse z -intercept of plane. (Intercept values are in multiples of the lattice constant;

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EE130/230A Discussion 1

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  1. EE130/230A Discussion 1 PengZheng

  2. Crystallographic Notation Miller Indices: h: inverse x-intercept of plane k: inverse y-intercept of plane l: inverse z-intercept of plane (Intercept values are in multiples of the lattice constant; h, k and l are reduced to 3 integers having the same ratio.) EE130/230A Fall 2013 Lecture 1, Slide 2

  3. Areal Density of Atoms for the (111) Plane

  4. Intrinsic Carrier Concentration, ni • At temperatures > 0 K, some electrons will be freed from covalent bonds, resulting in electron-hole pairs. conduction For Si: ni  1010 cm-3 at room temperature EE130/230A Fall 2013 Lecture 1, Slide 4

  5. Intrinsic Carrier Concentration T = 300K, ni= 1.0× 1010 T = 330K, ni= 7.1× 1010 T = 270K, ni= 9.2× 108 10% change in T, ~1 order of magnitude change in ni. niforSi is a very sensitive function of temperature. Effective Densities of States at the Band Edges (@ 300K) EE130/230A Fall 2013 Lecture 3, Slide 5

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