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Optical modulation of amplified emission in a polyfluorene-diarylethene blend |
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| Authors: | Perissinotto Stefano Garbugli Michele Fazzi Daniele Bertarelli Chiara Carvelli Marco Kandada Ajay R Srimath Yue Zhounan Wong Kam S Lanzani Guglielmo |
| Institution: | Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan, Italy. stefano.perissinotto@iit.it |
| 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. |
| Keywords: | amplified spontaneous emission density functional theory energy transfer fluorescence photochromism |
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