Hi ! 

It is much easier to compute emission behavior of a molecule using Gaussian package then Gamess. Also, let us know whether you want emission property of molecule in solvent or in vacuum phase? I can provide you detail procedure

I can provide you detail procedure I used for my research problem but since the result is not yet communicated so do let me know your email id. 

Thanks, 

Hi, Nikhil, thank you very much for your answer.  My personal e-mail is [email protected]

Unfortunately we do not have Gaussian package license in our research group. In fact Most articles use Gaussian Package to simulate emission spectra.

Hallo, have you find method to obtain emission spectra using GAMESS? I also have calculated Emission Spectra using Gaussian when I took my doctoral program. But now, in my institution we don't have Gaussian. I plan to use GAMESS to figure out the emission spectra. Hope you have got the methods. Thanks.

Hi!

I have used GAMESS to simulate the absorption and emission spectra. As I know, to obtain the absorption, we just need to do the single point energy at the excited states. In the case of emission, one have to do is optimization at the excited states. These can be done by the TDDFT, CASSCF, or even MRMP2, if your system is not large. For optimization, TDDFT is most possible to do, then recalculate with the higher accuracy methods.