Triplet exciton lifetime in crystalline pyrene |
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Authors: | L Peter G Vaubel |
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Institution: | Fritz-Haber-Institut der Max-Planck-Gesellschaft, D-1 Berlin 33, Germany |
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Abstract: | The triplet exciton lifetime in crystalline pyrene is found to be 140 ± 10 msec at room temperature, over 500 times longer than previously reported values. The temperature dependence of the triplet lifetime has been measured over the range 80–300°K. The rate of bimolecular annihilation of triplet excitons in pyrene is found to be independent of temperature over the range 150–300°K. It is concluded that the transfer of triplet energy within the crystal may be described using the monomer exciton model. |
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