ELCT363_Lecture8_EnergyBand

ELCT363_Lecture8_EnergyBand - Energy Band Neamen, Chapter 3...

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ELCT 363: Intro. to Microelectronics Lecture 8; Slide Mandal/Fall 2011 Energy Band Neamen, Chapter 3 1
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ELCT 363: Intro. to Microelectronics Lecture 8; Slide Mandal/Fall 2011 Energy Band When isolated atoms are brought together to form a solid, various interactions occur between neighboring atoms. Attraction and repulsion is balanced, and electron energy level is reconfigured, forming the energy bands . In a six-atom system, electron energy level is split into a set of six separate but closely spaced energy levels. In a crystalline solid, billions and billions atoms are packed closely together, the energy levels within each set become so closely spaced in energy that they form a practically continuous energy band. 1 hydrogen atom 2 hydrogen atoms Each Hydrogen atom shares the other's valence electron 2 Probability (of finding an electron) density function
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ELCT 363: Intro. to Microelectronics Lecture 8; Slide Mandal/Fall 2011 Energy Band Structure Every solid has its own characteristic energy band structure, which
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ELCT363_Lecture8_EnergyBand - Energy Band Neamen, Chapter 3...

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