sensitized luminescence 

https://doi.org/10.1351/goldbook.S05609
The deactivation of the primarily excited emitter which can lead to the activation of the quencher followed by radiative deactivation.
Source:
PAC, 1984, 56, 231. (Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy) on page 235 [Terms] [Paper]