Up-conversion fluorescence: Noncoherent excitation by sunlight
Up-conversion fluorescence: Noncoherent excitation by sunlight
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DOI:
10.1103/physrevlett.97.143903
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发表时间:
2006-10-06
影响因子:
8.6
通讯作者:
Wegner, G.
中科院分区:
文献类型:
--
作者:
Baluschev, S.;Miteva, T.;Wegner, G.
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.).