Arne Ludwig

3 Questions 13 Answers 0 Followers

Questions related from Arne Ludwig

Does anyone know about or have a Hitachi S7080 scanning electron microscope?

Dear colleagues, We have trouble with the computer of our Hitachi S7080 SEM. It is a SORD workstation. If anyone has a running one or any knowledge, please contact me. Any information/hint will be...

07 July 2014 2,054 5 View

Origin of defect luminescence in Si-doped GaAs substrate?

Hi, We bought Si-doped GaAs substrates with a doping concentration of ~2x10^18 1/cm³. In the photo luminescence (PL) of the bare wafers at 77 K we observe a broad peak at wavelengths above...

07 July 2013 7,192 3 View

Where to get ultra high purity Ga for III-V MBE?

I would like to buy ultra high purity Ga for our III-V-MBE. If any of you know a reliable source for this material, this would be great. The purity analysis is usually not a good reference, as...

07 July 2013 9,525 11 View