Up-conversion fluorescence: noncoherent excitation by sunlight

Up-conversion fluorescence: noncoherent excitation by sunlight

We demonstrate up-conversion of noncoherent sunlight realized by ultralow excitation intensity. The bimolecular up-conversion process in our systems relies on the presence of a metastable triplet excited state, and thus has dramatically different photophysical characteristics relative to the other k...

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Veröffentlicht in:Physical review letters 2006-10, Vol.97 (14), p.143903-143903
Hauptverfasser: Baluschev, S, Miteva, T, Yakutkin, V, Nelles, G, Yasuda, A, Wegner, G
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container_issue 14
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container_title Physical review letters
container_volume 97
creator Baluschev, S
Miteva, T
Yakutkin, V
Nelles, G
Yasuda, A
Wegner, G
description We demonstrate up-conversion of noncoherent sunlight realized by ultralow excitation intensity. The bimolecular up-conversion process in our systems relies on the presence of a metastable triplet excited state, and thus has dramatically different photophysical characteristics relative to the other known methods for photon up-conversion (two-photon absorption, parametric processes, second harmonic generation, sequential multiphoton absorption, etc.).
doi_str_mv 10.1103/PhysRevLett.97.143903
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title Up-conversion fluorescence: noncoherent excitation by sunlight
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