Semiconductors - Overview

Define and differentiate conductors, insulators and semiconductors.

Classification of semiconductors — intrinsic and extrinsic

Types of extrinsic semiconductors — n type and p type

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Discuss the position of acceptor level (band) in p type and donor level (band) in n type.

Ways to increase conductivity of intrinsic semiconductors — raise temperature, doping

What is Fermi level and Fermi energy?

Prove that Fermi level lies in the middle of energy gap in intrinsic semiconductors

Dependence of Fermi level on temperature and carrier concentration

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Position of Fermi level in n type and p type semiconductors

Discuss carrier generation and carrier recombination

Discuss briefly pn junction

Discuss diffusion current, formation of depletion layer, depletion width, and drift current

Brief introduction to LED and Solar cell.

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