Basic Properties of Crystals Type of crystals for silicon: Single Crystal Polycrystalline Amorphous periodic small crystals no long range arrangements order between of atoms atoms Crystal lattice is described by a unit cell with a base vector(distance between atoms) Types of unit cells Z Cubic BCC FCC Body Centered Cube Face Centered CubeBasic Properties of Crystals Type of crystals for silicon: Single Crystal Polycrystalline Amorphous periodic small crystals no long range p y arrangements order between of atoms atoms Crystal lattice is described by a unit cell with a base vector (distance between atoms) Types of unit cells Types of unit cells Body Centered Cube Face Centered Cube