Iy. Goliney et Vi. Sugakov, ENHANCEMENT OF ODMR EFFECT IN A SYSTEM OF TRIPLET EXCITONS AT THRESHOLD OF ANNIHILATIONAL BISTABILITY IN ORGANIC-CRYSTALS CONTAINING TRAPS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 268, 1995, pp. 121-128
It is shown that the sensitivity of a system of triplet excitons in or
ganic crystals to microwave radiation under conditions that give rise
to the development of a annihilational bistability significantly incre
ases. A possibility to change intensity of crystal phosphorescence by
an order of magnitude by applying microwave field resonant to the tran
sitions between spin sublevels of trapped excitons has been demonstrat
ed.