Chromium etchant

[Hung-Tao Chou]

Hi! I use Transene Chromium Etchants 1020 to etch Cr. My Cr layer is
thermally evaporated and is 5-7 nm thick to avoid electrical charging in
doing e-beam lithography.
Sample with Cr layer is etched for 30 seconds in the etchant and then I
rinse it with DI water.
You can check the information from the link below.
http://www.transene.com/cr.html

Best,

Hungtao


Quoting Quoc X Ngo <qngo at arc.nasa.gov>:

> Does anyone have any ideas for wet etchants for thermally
> evaporated chromium?  I know there are a couple of
> commercially available chemicals (Cyantek, etc.), however,
> I just wanted to get an idea if you have any personal
> experience with this.
>
> Thanks,
> Quoc Ngo
>
> NASA Ames Research Center
> Moffett Field, CA 94035
> (650) 604-2434
>