Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

Authors

  • Dr. Stefano Perissinotto,

    Corresponding author
    1. Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan (Italy), Fax: (+39) 0223999866
    • Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan (Italy), Fax: (+39) 0223999866
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  • Dr. Michele Garbugli,

    1. Department of Physics, Politecnico di Milano, P.za Leonardo da Vinci 32, 20133 Milan (Italy)
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  • Dr. Daniele Fazzi,

    1. Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan (Italy), Fax: (+39) 0223999866
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  • Dr. Chiara Bertarelli,

    1. Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan (Italy), Fax: (+39) 0223999866
    2. Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, P.za Leonardo da Vinci 32, 20133 Milan (Italy)
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  • Marco Carvelli,

    1. Philips Research Labs Eindhoven, Holstlaan 4, Eindhoven (The Netherlands)
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  • Ajay R. Srimath Kandada,

    1. Department of Physics, Politecnico di Milano, P.za Leonardo da Vinci 32, 20133 Milan (Italy)
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  • Zhounan Yue,

    1. Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon (Hong Kong)
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  • Prof. Kam S. Wong,

    1. Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon (Hong Kong)
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  • Prof. Guglielmo Lanzani

    1. Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan (Italy), Fax: (+39) 0223999866
    2. Department of Physics, Politecnico di Milano, P.za Leonardo da Vinci 32, 20133 Milan (Italy)
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Abstract

A novel system for the modulation of amplified emission based on a polyfluorene/diarylethene (namely F8BT/DTP) blend is shown. The high sensitivity of amplified spontaneous emission (ASE) is exploited to achieve efficient emission modulation with a low-intensity control signal. Modulation is then characterized by photoluminescence (PL) lifetime measurements, photocurrent experiments, and density functional theory calculations. This system can also act as a photocurrent switch based on the same principle. This technique may represent a useful tool for fluorescence quenching and sensing as well as find application in organic photonics.

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