除了圆形蓝宝石晶片，各种尺寸的方形和矩形晶片也可供选择。如：5mm×5mm、10mm×10mm、10mm×15mm、15mm×20mm等。所有晶片可选择单面抛光或者双面抛光，晶片表面具体优良的平整度和洁净度，因此在GaN外延生长方面具有很好的性能。
到目前为止，C面（0001）是常用的蓝宝石晶向，由于技术成熟，蓝宝石晶体沿C轴生长，成本较低，物理、化学性能稳定。晶芯光电还可以提供其他特殊晶向，如：A面（11-20）、M面（10-10）、R面（1-102）、N面（11-23）、V面（22-43）等。
Item | 10mm x 10mm R-plane 500μm sapphire wafer | |
Crystal Materials | 99,999%, High Purity, Monocrystalline Al2O3 | |
Grade | Prime, Epi-polished | |
Surface Orientation | R-plane(1-102) | |
Size | 10 mm +/- 0.05 mm x 10 mm +/- 0.05 mm | |
Thickness | 500 μm +/- 25 μm | |
Front Surface | Epi-polished, Ra < 0.5 nm (by AFM) | Epi-polished, Ra < 0.5 nm (by AFM) |
Back Surface | Fine ground, Ra = 0.8 μm to 1.2 μm | Epi-polished, Ra < 0.5 nm (by AFM) |
TTV | < 5 μm | |
BOW | < 5 μm | |
WARP | < 5 μm | |
Cleaning / Packaging | Class 100 cleanroom cleaning and vacuum packaging, single piece packaging. | |
注：可提供任意晶向、厚度、表面状态的定制化蓝宝石晶片。
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