Reply To: How can I find poly-Si material (n, k) data

[sagar]

You can collect the data (by digitized) from this plot for poly-Si.

https://refractiveindex.info/?shelf=main&book=Si&page=Aspnes

This is the website where you can find the n nad k for different materials. If you want to do the model to demonstrate the experiment it is better to get measure n and k with ellipsometry for your grown sample. It always differ form the literature data.