Sreerag Kaliveetil

3 Questions 6 Answers 0 Followers

Questions related from Sreerag Kaliveetil

Does a decrease in band gap necessarily produce a red shift in the PL spectra ?

For my samples, there is a reduction in band gap that is observed but there is no corresponding red shift in the PL spectrum. Is there any explanation for that.

02 May 2021 8,570 6 View

Should we set a baseline for obtained PL Spectrum?

This is a PL spectrum of my sample. It seems like I need to set a baseline for this. But I am confused as no one generally sets the baseline for PL.

01 May 2021 1,642 3 View

What are the possible reasons for noise in UV Visible spectrum of caffeine?

I took UV Visible spectrum of 1ppm Caffeine solution. It showed a huge amount of noise in the UV region. The absorbance was more than 2. Hence I reduced the concentration of the solution to 0.1ppm...

18 March 2021 1,592 5 View