Photovoltaic industry - specific wafer cleaning and diffusion of quartz boat
Product Description
Chemical composition table
| AL | Fe | K | Na | Li | Ca | Mg | Cu | Mn | Cr | B | Ti |
| 5-12 | 0.19-1.5 | 0.71-1.6 | 0.12-1.76 | 0.38-0.76 | 0.17-1.23 | 0.05-0.5 | 0.05 | 0.05 | <0.05 | <0.1 | <1.0 |
Spectral transmission at 1.0mm thickness
| m m | <220 | 255 | 280 | 315 | 350 | 38 | 590 | 780 |
| % | 89 | 91 | 93 | 93 | 93 | 93 | 93.2 | 93.4 |
Physical Property:
| 214 | 219 | 254 | |
| Density (g/cc) | 2.2 | 2.21 | 2.21 |
| Coefficient of Thermal Expansion(cm/cm°C) | 5.5*10-7 | 5.9*10-7 | 6.7*10-7 |
| Softening Point (°C) | 1683 | 1660 | 1615 |
| Annealing Point (°C) | 1215 | 1204 | 1163 |
| Strain Point (°C) | 1120 | 1106 | 1066 |
| Refractive Index | 1.4585 | 1.456 | 1.46 |
| Specific Heat (j/kgOK) | 670 | 700 | 690 |
| Compressive Strength (Pa) | >1.1*109 | 0.94*109 | 0.55*109 |
| Youngs Modulus (Pa) | 7.2*1010 | 7.5*1010 | 7*1010 |