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TECH INFO

Phei Lim Chan

Created on April 13, 2021

Crystal Structure

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Transcript

Crystal Structure IN SEMICONDUCTOR

CHAN PHEI LIM 148986

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Diamond Crystal Structure

FCC crstal structure

Coordination Number: 4

Atomic Packing Factor (APF): 0.34

Nearest Neighbors Distance: 0.865a

Number of Atom per unit cell: 8

Example: Si & Ge

Zinc Blende

FCC crstal structure

Coordination Number: 12

Atomic Packing Factor (APF): 0.74

Nearest Neighbors Distance: 0.707a

Number of Atom per unit cell: 4

Example: GaAs and InP

Hexagonal Close Packed (HCP)

FCC crstal structure

Coordination Number: 12

Atomic Packing Factor (APF): 0.74

Nearest Neighbors Distance: 1.633a

Number of Atom per unit cell: 6

Example: CdS and ZnO

Wurtzite

FCC crstal structure

Coordination Number: 12

Atomic Packing Factor (APF): 0.74

Nearest Neighbors Distance: 1.633a

Number of Atom per unit cell: 6

Example: BeO, ZnO, ZnS, ZnSe, CdS, and CdSe