Hello,

For silicon substrates, I advice you to do UV-Vis spectrophotometry using transmittance or reflectance mode (not absorbance). For the substrate holder, you cannot use the cuvette since it is not adapted to solid substrates. Instead, you can use an integration sphere where you can put your sample beteen a white transparent cube and the UV irradiation.

Good luck

You will need UV/Vis/NIR! You will see almost nothing in transmittance below roughly 1000nm.

Mr. Roy,

DRS is better choice for such analysis.

There is no absorption band of Si between 190 and 900 nm, either in transmission or reflection. If you want to know whether Si adds any background to a sample deposited on it, the answer is 'no'.

thank you very for the answer!