Geminate and nongeminate recombination of triplet excitons formed by singlet fission

Sam L. Bayliss; Alexei D. Chepelianskii; Alessandro Sepe; Brian J. Walker; Bruno Ehrler; Matthew J. Bruzek; John E. Anthony; Neil C. Greenham

doi:10.1103/PhysRevLett.112.238701

Geminate and nongeminate recombination of triplet excitons formed by singlet fission

Sam L. Bayliss, Alexei D. Chepelianskii, Alessandro Sepe, Brian J. Walker, Bruno Ehrler, Matthew J. Bruzek, John E. Anthony, Neil C. Greenham

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

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Abstract

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.

Original language	English (US)
Article number	238701
Journal	Physical review letters
Volume	112
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.112.238701
State	Published - Jun 9 2014

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10.1103/PhysRevLett.112.238701

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abstract = "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.",

author = "Bayliss, {Sam L.} and Chepelianskii, {Alexei D.} and Alessandro Sepe and Walker, {Brian J.} and Bruno Ehrler and Bruzek, {Matthew J.} and Anthony, {John E.} and Greenham, {Neil C.}",

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doi = "10.1103/PhysRevLett.112.238701",

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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.

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Geminate and nongeminate recombination of triplet excitons formed by singlet fission

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