Abstract
Time-resolved triplet exciton transport in binary mixed crystals has been studied for C10H8 in C10D8 (20%–100%) at liquid helium temperatures. The delayed fluorescence decays are exponential and range from milliseconds to nanoseconds as Cg goes from 0.2 to 1.0. The analysis is based on the presence of a BMN supertrap in large amounts (10−3) and on the fact that supertrapping of the guest excitons dominates the kinetics while heterofusion (triplet guest-triplet supertrap annihilation) dominates over the homofusion (guest–guest annihilation) and was used to monitor the kinetics. We also investigated in detail photodetrapping and the relative efficiencies of the various fusion channels. An analysis of the transport data is given in paper II.
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