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硅基氮化镓外延片
6 inch GaN-Epi on Si-sub

Substrate

  • 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


Epitaxial layer structure

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


Epitaxial wafer PEC

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

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