I want to know where can i find n , k mesoporous peroviskite coefficients?

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Imad Kemerchou

You can take the values directly from this link:

https://refractiveindex.info/?shelf=main&book=SiO2&page=Kischkat

n = 1.4432

k = 0.000020000

Absorption coefficient α = 1.6336 cm-1

You can change the type of material from the word "page".

Aya Khachnaoui

thank you but i didn't find mesoporous TiO2 for exemple

i need mesoporous materials

I think these values help you at work:

https://refractiveindex.info/

in this web site didn't find the mesoporous materials that's my problem