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
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Q:Do you sell SiC wafers that are not (0001) plane? For example, (11-20)?
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2018-06-19meta-author
Q:For pss wafer, the light comes out from the p-GaN side not from sapphire, so I can’t do flipchip packaging. Also I don’t know whether laser liftoff is possible for pss wafer.
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Regarding blue LED epi wafer, after MOCVD, do you anneal the wafer for p-GaN activation?
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2018-06-19meta-author
epi wafer, InGaAsP, laser diode