Optical band gap of a cobalt ferrite

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  • Thread starter sounouhid
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  • #1
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Main Question or Discussion Point

Hi everyone
How can I determine the optical band gap of a cobalt ferrite film deposited on a glass substrate using its absorption, transmittance and diffuse reflectance spectrum (knowing that I don't know the thickness of this film)
 

Answers and Replies

  • #2
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  • #3
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thanks Vagn for replying me
but i don't have the thickness of the film (so i can not determine the absorption coefficient alpha that i need for the tauc plot)
 
  • #4
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thanks Vagn for replying me
but i don't have the thickness of the film (so i can not determine the absorption coefficient alpha that i need for the tauc plot)
You can plot αd instead of α.
 
  • #5
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and how can i determine the band gap from that plot
 
  • #6
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and how can i determine the band gap from that plot
Replace the α's for the Tauc plot with αd's. As d is constant, it just changes the scale.
 
  • #7
22
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i will do it
thank you i really appreciate your help
 

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