single crystal bulk
3.1 Design
Molecular formula
CuSO₄5H₂O
Melting point
16136℃
Specific gravity
2.284g/ml
Solubility
52g/100gH₂O (25℃)
Molecular weight
249.69
PH
2.480 (25℃)
system of crystallization
orthorhombic system
Table. 2. CuSO₄5H₂O
Molecular formula
KH₂PO₄
Melting point
96℃
Specific gravity
2
To prevent silicon from agglomerating
→ should cool the solid quickly
Rapid cooling
→ large thermal gradient in crystal
Postulate K=20W/m K
Diameter of wafer: 10-20 cm
L (latent heat of fusion) = 340 cal/g
Temperature gradient in silicon CZ (dT/dx) : 100°C/cm
3. MonocrystalSilicon Growth
단결정 규소 봉으로 불뤼는 성장된 실리콘 단결정을 제작하기 위한 과정을 결정 성장이라고 합니다. 웨이퍼 제조에 사용된 실리콘 단결정 인곳(ingot: 금속 또는 합금을 한번 녹인 다음 주형에 흘려넣어 굳힌 것)의 성장을 위해 오늘날 가장 널리 이용되는 기술은 Czochralsik(CZ
The crystal structure is a member of the hexagonal crystal system and consists of tetrahedrally coordinated Zinc and Sulfur atoms that are stacked in an ABABAB pattern.
The structure is closely related to the structure of lonsdaleite, or hexagonal diamond.
As there all orientations of the crystal, rings of different 2θ values are formed
A single crystal specimen in a Bragg-Brentano diffrac