Semiconductor Crystals - Physics Department - University College ...

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2D Unit Cell example -(NaCl)We define lattice points ; these are points with identicalenvironmentsCrystal Structure 43Choice of origin is arbitrary - lattice points need not beatoms - but unit cell size should always be the same.Crystal Structure 4422
This is also a unit cell -it doesn’t matter if you start from Na or ClCrystal Structure 45- or if you don’t start from an atomCrystal Structure 4623
Page 1 and 2: Physics PY4118Physics of Semiconduc
Page 3 and 4: Hybrid Orbitals Types of Hybrid Orb
Page 5 and 6: “sp 2 ” HybridizationBF 3Hybrid
Page 7 and 8: Oxygen Atom Bonding in H 2 O2p4 sp
Page 9 and 10: Physics PY4118Physics of Semiconduc
Page 11 and 12: III-V Semiconductors3 sp 3 orbitals
Page 13 and 14: Wurtzite LatticeView of tetrahedral
Page 15 and 16: Polycrystalline SolidPolycrystal is
Page 17 and 18: Crystal StructureCrystal structure
Page 19 and 20: Crystal LatticeBravais Lattice (BL)
Page 21: Unit Cell in 2DThe smallest compone
Page 25 and 26: Three common Unit Cell in 3DCrystal
Page 27 and 28: Primitive and conventional cells-hc

Semiconductor Crystals - Physics Department - University College ...

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