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.
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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.
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 undoped 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, Carrier [...]
Q: Regarding blue LED epi wafer, after MOCVD, do you anneal the wafer for p-GaN activation? A:Yes!
Q:Could you tell us also what type of 4-H polytype SiC sudstrate you are able to provide? A: Sure.
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. A:LED light is sourcing from mqw light, emitting in all directions, p-GaN is [...]
Q:Can you supply 4″ AlGaAs epi wafers for IR LEDs? A:Yes, we can offer 850nm or 620nm for 4” size.
Q:What atomic ratio for Si/C in SiC ? A:Atomic ratio for Si/C in SiC is 1:1