Aluminum Gallium Nitride (AlGaN)

Can you get (or do you have) sapphire wafers with AlGaN coating for sale?

I need something around 1 cm diameter or a bit larger.  Thickness:  200 – 500 um, nominally.

I am interested in 2" diameter c-plane AlGaN template, undoped. Please quote me for qty <5 of 50% AlGaN.  Also, please provide specs on dislocation density, surface roughness, substrate miscut, polish.  I generally prefer single-side polished wafers.

Can you offer me any of the following wafers?

• Al2O3 2" SSP, 375-400 um
• SiC 4H 2", 375-400 um (insulating for transistor manufacturing)
• Si (111) 2", 375-400 um (high resistivity also for transistor)

We are going to use them to transfer our HFET technology that is based on AlGaN/GaN heterostructures deposited on Al2O3 by MOVPE method. I thought that 4H SiC is better for GaN-based transistor applications, at least so I have been told. But on the other hand we need semi-insulating substrate, so it does not influence transistor operation at high fields and frequencies.

Price for p-type GaN template and p-type AlGaN template including detailed technical data of those. 

I need p-type GaN (may be doped with magnesium) and p-type AlGaN substrate. It can be deposited on sapphire wafer or quartz wafer, thickness is around 0.3 to 0.8 micron. I preferred a square substrate than a round one, substrate must have at least 1000oC of melting point. I also need a full technical data of these substrate: electrical, optical, mechanical and surface properties, thickness of film and wafer etc.

If you only have a round substrate, I'll buy 1 spec each.
If you have square substrate, please give me it's parameters.

We need a 2" templates 200-300nm thick AlGaN layer on c-plane sapphire. The AlGaN layer should be doped with  a Si concentration of 3-5e18 1/cm3.  The aim is for 2 Al compositions of 20% and 40%. What is the price for each research grade 2" wafer?