How do you obtain an even spread of polymer film on Silicon wafer?

Isaiah Adelabu @Isaiah-Adelabu

28 January 2021 1 10K Report

Hi Everyone,

I made some polymer(Polylactide) films on Silicon wafer. The polymer was dissolved in DCM and THF.

I observed that the colour of the film at the centre of the Wafer is different from the edges.

I reduced the RPM to 500rpm and it is still the same.

What should I do?

Juan Manuel Gomba

I think you can have an approach here, contacting some of the people answering:

https://www.researchgate.net/post/How_can_one_perform_spin_coating_of_glass_with_a_polylactide-chloroform_solution

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