Q:I want to know the dopant concentration of SiC substrate that you normally provide ? What is the maximum Nitrogen dopant concentration that you can provide? I am looking for heavily nitrogen doped SiC wafers?
A: Our Nitrogen dopant concentration is 1E18/cm3-1E19/cm3, which belongs to heavy dopant.
2018-06-19meta-author
Q:Do you sell SiC wafers that are not (0001) plane? For example, (11-20)?
A:We can offer a-plane, but the size would be smaller,and should require quantity, do you have size requirement?
2018-06-19meta-author
PAM-XIAMEN can supply GaAs wafer with EPD less than 5000/cm2.
Q: Could you please advise guaranteed EPD for below substrate and epi?
Gallium Arsenide wafers, P/E 2″Ø×380±25µm,
LEC SI c doped GaAs:-[100]±0.5°, n-type Ro=(0.8E8-0.9E8)Ohmcm,
One-side-polished, back-side matte etched, 2 Flats,
LT-GaAs EPI: 1-2µm, Resistivity >1E7 Ohm-cm, [...]
2018-09-06meta-author
Q: What is the minimum batch size for blue LED wafers on 4 inch sapphire (patterned sapphire)?
A:5pcs is ok, but the price would be higher.
2018-06-19meta-author
Q:What atomic ratio for Si/C in SiC ?
A:Atomic ratio for Si/C in SiC is 1:1
2018-06-19meta-author
Q:Dislocation density < 1E8 of GaN on sapphire from what kind of characterization?
A:Considering edge dislocation and mixing dislocation and then abtained by XRD
2018-06-19meta-author