Is there a general trend such that transition matrix elements for electronic/excitonic transitions are larger/smaller in molecules than in inorganic solids or vice versa?

  • $\begingroup$ +1 but from which vibrational level? Won't they be different at the bottom of a potential well vs the top? $\endgroup$ Dec 15, 2023 at 11:30
  • $\begingroup$ Is this a question about differences between organic vs inorganic matter (where "inorganic" is a very broad category that comprises almost the entire periodic table) or is it a question about the transition from molecules to solids? I.e. would you be satisfied with an answer about the difference between molecules (gas? liquid?) and molecular crystals? (not that I know it off the top of my head) $\endgroup$ Dec 17, 2023 at 23:08
  • $\begingroup$ it is a question about optical selection rules and absorption and how they are different in organic and inorganic semiconductors. $\endgroup$
    – freude
    Dec 18, 2023 at 0:24
  • $\begingroup$ it is a question about electronic transitions in the systems where electrons are delocalized over long distances and where electrons are tightly confined. $\endgroup$
    – freude
    Dec 18, 2023 at 0:26


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