Andrew,

I may not have a specific answer to your question, but a quick SEM and EDX will
give a good understanding of the surface morphology and atomic concentrations,
respectively.

Secondly,  Ti(2-5nm) on glass should be of concern.  Glasses are ocassionally
known to have distributed 'peaks', 'valleys' and, sometimes, pits.  Assuming
you have not done so, I will suggest you start with the glass substrate.
 Compare its surface roughness to the Ti thickness.  If the rms roughness is
greater than the thickness of Ti, then you may likely have Ti discontinuities.
 As a result some sites on the glass will be in direct contact with Au.
 Adhesion of Au to glass is a challenge.

Regards,

Robert.


On Oct 20,  9:22, andrew lyon wrote:
> Subject: what am i doing wrong with ti adhesion layers?
> What am i doing wrong with Ti adhesion layers?  I am thermally
> evaporating 50-100nm Au films on glass substrates with 2-5nm Ti adhesion
> layers.  After a few days, the films turn from reflective Au to a frosty
> white color.  Is this titanium oxidation or some other diffusion process
> I am unfamiliar with?
>
> Thanks
>
> L. Andrew Lyon, Assistant Professor
> School of Chemistry and Biochemistry
> Georgia Institute of Technology
> Atlanta, GA  30332
>
> andrew.lyon@chemistry.gatech.edu
>
>
>-- End of excerpt from andrew lyon



--
Robert S. Okojie, PhD
Research and Development
Visteon Automotive Systems
Ford Microelectronics
9965 Federal Drive, Colorado Springs, CO 80921-3698
Phone:(719)528-7727; Fax: (719)528-7529