Thin Film Deposition: Carbazole Molecular Glasses Color Change

[EL AALLAOUI Najla]

Homework Statement

Hi everyone,I hope you are doing well.
I am trying to get a thin film of molecular glasses based carbazole , and during the deposition with physical vapor deposition I notice that the color change from brum to black liquid then we get a yellow thin film .
Please could you help me the understand what's happen ?
Thank you in advance for your interest.

Relevant Equations

don't have

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[trurle]

The color of thin film is strongly affected by interference of light.

 

[bob012345]

Here is a mini lecture on the topic.