6 inch p-type low resistivity Si substrate
Wafer diameter: 150.0 ± 0.5 mm
Thickness: 1000 ± 25 µm
Orientation: (111) just ± 0°20'
Orientation flat
- Orientation : (110) ± 1°0'
- Length: 57.5 ± 2.5 mm
Surface finishing: One-side polished
Layer | Material | Al Composition | Thickness (nm) | Dopant | Doping (cm-3) | |
---|---|---|---|---|---|---|
5 | i-GaN | - | 2 | - | - | |
4 | i-AlGaN | 0.25 | 27 | - | - | |
3 | i-GaN | - | 350 | - | - | |
2 | i-GaN (C-doped) | - | ~3900 | (C) | * | |
1 | Buffer layer (C-doped) | - | ||||
Sub | Si |
(*) GPT standard high resistivity condition. Growth method: MOCV
Items | SPEC | Notes | |||
---|---|---|---|---|---|
Barrier layer thickness (nm) | designed ±10% | XRD | 3 points | "calibration epi"* | |
Barrier layer Al composition | designed ±0.02 | XRD | 3 points | "calibration epi"* | |
FWHM(0002) (arcsec) | ≦1000 (≦750 [target]) | XRD | center | for each wafer | |
FWHM(10-12) (arcsec) | ≦1800 (≦900 [target]) | ||||
Total epi thickness (nm) | Average | designed ±10% | optical nterferometer | whole surface | for each wafer |
Wafer Bowing (μm) | -50um≦ Bow ≦50 | FRT method | whole surface | for each wafer | |
Surface particle number [surfscan] | Total: ~500 [Reference] | Surfscan | whole surface | for each wafer |