SEPARAZIONE DI CARICA IN MISCELE DI MATERIALI ORGANICI: VALE LA LEGGE DI COULOMB?
Keyword(s):
After a brief introduction to organic photovoltaic materials, I discuss the problem of charge separation in these systems. In the best devices, the excitations produced by absorption of a photon can be converted into positive and negative charge carriers (holes and electrons, respectively) with near-100% efficiency. Such efficiencies are apparently at odds with Coulomb’s law, which would lead to change recombination due to their mutual electrostatic attraction. A theoretical model developed within my group overcomes this apparent contradiction, by taking into account quantum mechanical effects such as the delocalization of the charge carriers.
2010 ◽
Vol 16
(6)
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pp. 1776-1783
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2012 ◽
Vol 116
(7)
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pp. 4824-4831
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2018 ◽
Vol 6
(17)
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pp. 7950-7958
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2019 ◽
Vol 11
(24)
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pp. 21543-21551
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