Hello,

I am interested in the Oscillator Strength for the S1-> S0 transition in an organic molecule.

I already calculated the S0 optimized geometry, vertical transition to S1, so I have the Oscillator Strength from S0 geometry to S1, then I optimized the S1 state.

I am wondering how I Can obtain the emission Oscillator Strength from S1 opt -> S0 by TD-DFT using gaussian. I already have the Abs Oscillator Strength but I would like to compare with the emission.

Thanks a lot