Semiconductor Crystals - Physics Department - University College ...

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Survey of Solid State PhysicsTaken from: EP364 Solid State PhysicsProf.Dr. Beşire GÖNÜLLink to full notes providedColáiste na hOllscoile Corcaigh, ÉireUniversity College Cork, IrelandROINN NA FISICE Department of PY4118 Physics ofPhysics Semiconductor Devices 2.27Crystalline SolidSingle crystal has an atomic structure that repeats periodicallyacross its whole volume. Even at infinite length scales, eachatom is related to every other equivalent atom in the structureby translational symmetrySingle PyriteCrystalSingle CrystalAmorphousSolidCrystal Structure 2814
Polycrystalline SolidPolycrystal is a material made up of an aggregate of many small single crystals(also called crystallites or grains).These regions are called as grains ( domain) and are separated from oneanother by grain boundaries. The atomic order can vary from one domain to thenext.The grains are usually 100 nm - 100 microns in diameter. Polycrystals withgrains that are
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: Wurtzite LatticeView of tetrahedral
Page 17 and 18: Crystal StructureCrystal structure
Page 19 and 20: Crystal LatticeBravais Lattice (BL)
Page 21 and 22: Unit Cell in 2DThe smallest compone
Page 23 and 24: This is also a unit cell -it doesn
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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