title: Effect of an external magnetic field on the up-conversion photoluminescence of organic films: the role of disorder in triplet-triplet annihilation.
abstract: We have investigated the influence of the magnetic field on the triplet-triplet annihilation process in organic films using a model multicomponent system for blue delayed up-conversion photoluminescence. In such a way, we have derived simple analytical expressions to estimate the overall annihilation probability, outlining the peculiar role played by the disorder and demonstrating that the triplet-triplet fusion in solid films is a diffusion limited process.
authors.affiliation: CNR-INFM and Department of Material Science, University of Milano-Bicocca, via Cozzi 53, I-20125 Milano, Italy. jakub.mezyk@mater.unimib.it
authors.forename: J
authors.initials: J
authors.lastname: Mezyk
authors.forename: R
authors.initials: R
authors.lastname: Tubino
authors.forename: A
authors.initials: A
authors.lastname: Monguzzi
authors.forename: A
authors.initials: A
authors.lastname: Mech
authors.forename: F
authors.initials: F
authors.lastname: Meinardi