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ELCT363_Lecture5_Crystal_Lattice

ELCT363_Lecture5_Crystal_Lattice - Crystal Lattice Neamen...

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ELCT 363: Intro. to Microelectronics Dr. Mandal/Fall 2011 Lecture 5; Slide Crystal Lattice Neamen: Chapter 1 1
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ELCT 363: Intro. to Microelectronics Dr. Mandal/Fall 2011 Lecture 5; Slide Charge transport through a semiconductor depends not only on the properties of electron but also on the arrangements of atoms in the solid. Materials in crystalline form, in many cases, has improved optical and electrical properties over randomly arranged materials (amorphous). Structure of Solids No periodic Structure Many small regions of single crystal material 2
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ELCT 363: Intro. to Microelectronics Dr. Mandal/Fall 2011 Lecture 5; Slide Structure of Solids in 3D View 3
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ELCT 363: Intro. to Microelectronics Dr. Mandal/Fall 2011 Lecture 5; Slide 4 Examples of Crystals Diamond Sulfur
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ELCT 363: Intro. to Microelectronics Dr. Mandal/Fall 2011 Lecture 5; Slide 5 Crystal and Lattice Single Crystal Semiconductors has periodic arrangement of atoms throughout the entire volume of the material. Crystal lattice : Periodic arrangement of atoms (in 3D space) making up the crystal Lattice Constant : Smallest distance between periodically arranged atoms Unit cell : Representative of the crystal lattice that are regularly repeated to reproduce the crystal Primitive cell : The smallest unit cell; all primitive cells must have the same volume. Unit cell
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ELCT363_Lecture5_Crystal_Lattice - Crystal Lattice Neamen...

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