Optical modulation of amplified emission in a polyfluorene-diarylethene blend

Stefano Perissinotto; Michele Garbugli; Daniele Fazzi; Chiara Bertarelli; Marco Carvelli; Ajay R Srimath Kandada; Zhounan Yue; Kam S Wong; Guglielmo Lanzani

doi:10.1002/cphc.201100480

Optical modulation of amplified emission in a polyfluorene-diarylethene blend

Chemphyschem. 2011 Dec 23;12(18):3619-23. doi: 10.1002/cphc.201100480. Epub 2011 Oct 24.

Authors

Stefano Perissinotto¹, Michele Garbugli, Daniele Fazzi, Chiara Bertarelli, Marco Carvelli, Ajay R Srimath Kandada, Zhounan Yue, Kam S Wong, Guglielmo Lanzani

Affiliation

¹ Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milan, Italy. stefano.perissinotto@iit.it

PMID: 22025448
DOI: 10.1002/cphc.201100480

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.