title: Photochromic Electret: A New Tool for Light Energy Harvesting.
abstract: In this paper, a photochromic electret for light energy harvesting is proposed and discussed. Such electret directly converts the photon energy into electric energy thanks to a polarization modulation caused by the photochromic reaction, which leads to a change in dipole moment. Theoretical concepts on which the photochromic electret is based are considered with an estimation of the effectiveness as a function of material properties. Finally, an electret based on a photochromic diarylethene is shown with the photoelectric characterization as a proof of concept device.
authors.affiliation: Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta" , piazza L. da Vinci 32, 20133 Milano, Italy.|Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia , via G. Pascoli 70/3, 20133 Milano, Italy.
authors.forename: Rossella
authors.initials: R
authors.lastname: Castagna
authors.affiliation: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia , via G. Pascoli 70/3, 20133 Milano, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Garbugli
authors.affiliation: Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Brera , via E. Bianchi 46, 23807 Merate, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Bianco
authors.affiliation: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia , via G. Pascoli 70/3, 20133 Milano, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Perissinotto
authors.affiliation: Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta" , piazza L. da Vinci 32, 20133 Milano, Italy.|Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Brera , via E. Bianchi 46, 23807 Merate, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Pariani
authors.affiliation: Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta" , piazza L. da Vinci 32, 20133 Milano, Italy.|Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia , via G. Pascoli 70/3, 20133 Milano, Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Bertarelli
authors.affiliation: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia , via G. Pascoli 70/3, 20133 Milano, Italy.
authors.forename: Guglielmo
authors.initials: G
authors.lastname: Lanzani
keywords: capacitor; diarylethene; electret; energy harvesting; photochromism; polarization; poling