Photoluminescence (PL) spectra of the single crystal organic sample shows broad single peak only. Can I consider it is mixed with impurity or? Please explain? The attached file is the recorded PL for the sample.
I think its room temperature PL (quite strong too !). If you do a low temperature PL, then it can be more clear.
I agree with S. Kataria. You shoul measure low temperature PL. Then you should simulate/fit experimental results using Gaussian, Lorenztian etc. function or you can plot your results log(Intensity)-energy scale. If is there any shoulder on your results, then it gives activation energy of impurity.
Dr. Omer sir, I plot eV vs. Intesity, it also looks as follows, What I should get from the spectra.
There is a single slop in your figure. But PL spectrums shows that spectrum is not completed, isn't it ? I understand that there is no edditional redative state. Could you send data for Gauss, Lorentz fitting ?
Dear Omer sir,
What is the criteria for chosen of Gaussian or Lorenztian fitting for PL because both are different distribution function? I am puzzling with this questions, people are random;y using both functions for PL fitting.
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