
%0 Journal Article
%A Fleming, GR 
%A Millar, DP 
%A Morris, GC 
%A Morris, JM 
%A Robinson, GW 
%T Exciton fission and annihilation in crystalline tetracene
%J Australian Journal of Chemistry
%D 1977/11/01
%V 30
%N 11
%P 2353-2359
%K 
%R https://doi.org/10.1071/CH9772353
%U https://www.publish.csiro.au/paper/CH9772353 
%X The time-resolved fluorescence of tetracene crystals excited by a single 7-ps pulse of 530-nm light has been measured with a streak camera/OMA system. The singlet exciton lifetime was found to be 300±30 ps at 293 K. Singlet-singlet exciton annihilation was observed, and the rate constant found to be 5 x 10-9 cm3 s-1. In order to fit the observed decay curves, an upper limit of c. 1 x 10-9 cm3 s-1 must be set on the singlet-triplet exciton annihilation rate. The measured singlet-singlet exciton annihilation rate is consistent with a hopping model for singlet exciton motion at room temperature. 
