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.
Wegner, G.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Baluschev, S.;Miteva, T.;Wegner, G.

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我们展示了通过超低激发强度实现的非相干太阳光的上转换。在我们的系统中的双分子上转换过程依赖于亚稳态三重激发态的存在,因此相对于用于光子上转换的其他已知方法(双光子吸收、参数过程、二次谐波产生、顺序多光子吸收等)具有显著不同的电子物理特性。
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.).