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Part 2 : Nanostuctures

Module 1 : Introduction

Lecture 2 : Band Structure in Semiconductors

Band Structure in Semiconductors:
Direct-Gap Semiconductor: For a simplified picture of band structure (Fig 1.5) in direct-gap semiconductor, the conduction band edge is spherically symmetric, with the effective mass m_e^* :
	,
where E_g is the band gap and energy zero is taken at the valence band edge
	Fig 1.5: Schematic energy band diagram for a semiconductor