How to quantify defect state density from PL spectra?

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Nilanjan Halder

quantification will be difficult. qualitatively you can say that the PL intensity is inversely proportional to number of deffect states. time resolved PL may give you a better idea about the deffect states.

Mahesha M G

@Nilanjan Thanks. Yes. It is only qualitative statement.

Azhar Fakharuddin

You could refer to publications by group of Henry Snaith where they developed a model to quantify trap state and experimentally validated using light intensity dependent PL measurements.

@ Azhar..Please give me reference of the paper

Thanks

Here you go. http://pubs.acs.org/doi/abs/10.1021/nn5036476

@Azhar... Thanks...