Triplet exciton transport in isotopic mixed naphthalene crystals. I. Kinetic analysis of trapping and fusion
نویسنده
چکیده
Time-resolved triplet exciton transport in binary mixed crystals has been studied for CHin CloDg (20%-100%) at liquid helium temperatures. The delayed fluorescence decays ar~o g ~xponential 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 (103) and on the fact that supertrapping.o~ th~ guest ex~itons dominates the kinetics while heterofusion (triplet guest-triplet supertr~p anmhI~atI~n) domInat~s 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.
منابع مشابه
Triplet exciton transport in isotopic mixed naphthalene crystals . II . Master equation analysis
The experimental data on triplet exciton transport in isotopically mixed crystals of naphthalene/ perdeuteronaphthalene (paper I) are contrasted with singlet exciton transport in the same samples (20%-100%) and analyzed in terms of incoherent hopping models. The master equation approach is emphasized and extended. We modify the conventional continuum master equations via a physically plausible ...
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