4.7 Article

Control of near-infrared dye fluorescence lifetime in all-polymer microcavities

期刊

MATERIALS CHEMISTRY FRONTIERS
卷 6, 期 17, 页码 2413-2421

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qm00313a

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资金

  1. Compagnia di San Paolo (Turin, Italy) Research Project PIVOT [IDROL 20583]
  2. University of Genoa
  3. PRIN, Research Project PETALS [2020TS9LXS]
  4. Erasmus Mundus SERP+ Master program - European Commission

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In this paper, the integration of a near-infrared molecular fluorophore in an all-polymer planar microcavity is investigated. The modulation of the fluorescence decay and radiative rate of the dye used, as well as its fluorescence spectral line-shape and intensity, has been achieved by engineering the dielectric contrast of the polymers. This paves the way for innovative opportunities in invisible near-infrared-light communications and wireless technologies.
The control of radiative decay rate is a crucial issue both for fundamental studies in quantum electrodynamics and for the development of efficient lasers, light emitting devices and photovoltaic cells. In this paper we investigate the integration of a near-infrared molecular fluorophore in an all-polymer planar microcavity. Subsequently, we report the modulation of the fluorescence decay and radiative rate of the dye used and, in addition, of its fluorescence spectral line-shape and intensity. These effects have been possible through engineering the dielectric contrast of the polymers used to grow the flexible dielectric mirrors, thus blazing a trail to innovative opportunities for invisible near-infrared-light communications and wireless technologies.

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