TY - JOUR
T1 - Geminate and nongeminate recombination of triplet excitons formed by singlet fission
AU - Bayliss, Sam L.
AU - Chepelianskii, Alexei D.
AU - Sepe, Alessandro
AU - Walker, Brian J.
AU - Ehrler, Bruno
AU - Bruzek, Matthew J.
AU - Anthony, John E.
AU - Greenham, Neil C.
PY - 2014/6/9
Y1 - 2014/6/9
N2 - We report the simultaneous observation of geminate and nongeminate triplet-triplet annihilation in a solution-processable small molecule TIPS-tetracene undergoing singlet exciton fission. Using optically detected magnetic resonance, we identify recombination of triplet pairs directly following singlet fission, as well as recombination of triplet excitons undergoing bimolecular triplet-triplet annihilation. We show that the two processes give rise to distinct magnetic resonance spectra, and estimate the interaction between geminate triplet excitons to be 60 neV.
AB - We report the simultaneous observation of geminate and nongeminate triplet-triplet annihilation in a solution-processable small molecule TIPS-tetracene undergoing singlet exciton fission. Using optically detected magnetic resonance, we identify recombination of triplet pairs directly following singlet fission, as well as recombination of triplet excitons undergoing bimolecular triplet-triplet annihilation. We show that the two processes give rise to distinct magnetic resonance spectra, and estimate the interaction between geminate triplet excitons to be 60 neV.
UR - https://www.scopus.com/pages/publications/84902295780
UR - https://www.scopus.com/pages/publications/84902295780#tab=citedBy
U2 - 10.1103/PhysRevLett.112.238701
DO - 10.1103/PhysRevLett.112.238701
M3 - Article
C2 - 24972236
AN - SCOPUS:84902295780
SN - 0031-9007
VL - 112
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 238701
ER -