PPT Slide

CHEN435/PHGN435: Interdisciplinary Silicon Processing Laboratory

Mass Action Law

np = ni2

Silicon: ni ~ 1010 => np ~1020 (at 300 K)

Example
• n = 1016 => p = 104
• Majority Carrier
• Minority Carrier

Very Highly Doped Material
• > 1020
• Degenerate semiconductors
• Fermi level can exist in conduction or valence band
• Behave like metals

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