Up-Conversion Fluorescence: Noncoherent Excitation by Sunlight

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Up-Conversion Fluorescence: Noncoherent Excitation by Sunlight

S. Baluschev, T. Miteva, V. Yakutkin, G. Nelles, A. Yasuda, and G. Wegner

Phys. Rev. Lett. 97, 143903 – Published 4 October 2006

Abstract

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.).

Received 2 May 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.143903

Authors & Affiliations

S. Baluschev^1,*, T. Miteva^2,†, V. Yakutkin¹, G. Nelles², A. Yasuda², and G. Wegner¹

¹Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
²Sony Deutschland GmbH, Materials Science Laboratory, Hedelfingerstrasse 61, 70327 Stuttgart, Germany

^*Electronic address: balouche@mpip-mainz.mpg.de
^†Electronic address: miteva@sony.de

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Issue

Vol. 97, Iss. 14 — 6 October 2006

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