Energy Frontier Research Center for Excitonics

Cambridge, MA, United States

Energy Frontier Research Center for Excitonics

Cambridge, MA, United States
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Thompson N.J.,Energy Frontier Research Center for Excitonics | Hontz E.,Energy Frontier Research Center for Excitonics | Congreve D.N.,Energy Frontier Research Center for Excitonics | Bahlke M.E.,Energy Frontier Research Center for Excitonics | And 3 more authors.
Advanced Materials | Year: 2014

Singlet exciton fission is an efficient multiple-exciton generation process that is vulnerable to a characteristic loss process: triplet-charge annihilation. This loss process is characterized in singlet-fission photovoltaics and losses as high as 40% are observed in poorly designed devices. Techniques are demonstrated to improve charge extraction and reduce triplet-charge annihilation to negligible levels at short-circuit conditions. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


PubMed | Energy Frontier Research Center for Excitonics
Type: Journal Article | Journal: Advanced materials (Deerfield Beach, Fla.) | Year: 2014

Singlet exciton fission is an efficient multiple-exciton generation process that is vulnerable to a characteristic loss process: triplet-charge annihilation. This loss process is characterized in singlet-fission photovoltaics and losses as high as 40% are observed in poorly designed devices. Techniques are demonstrated to improve charge extraction and reduce triplet-charge annihilation to negligible levels at short-circuit conditions.

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