title: Study of the effect of excited state concentration on photodegradation of the p3ht polymer.
abstract: We have studied photoinduced reduction of absorption and emission in p3ht, a semiconducting polymer, and found that the rate of photodegradation (destruction of the constituent thiophene rings) does not correlate with the luminescence intensity and, correspondingly, does not depend on the excited state concentration. This conclusion rules out Purcell enhancement of radiative decay rate as a possible explanation of the recently discovered reduction of the p3ht photodegradation rate in the vicinity of metallic substrates and lamellar metal-dielectric metamaterials.
authors.affiliation: Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.
authors.forename: V N
authors.initials: VN
authors.lastname: Peters
authors.affiliation: Summer Research Program, Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.|School of Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Rohan
authors.initials: R
authors.lastname: Alexander
authors.affiliation: Summer Research Program, Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.
authors.forename: D'Angelo A
authors.initials: DA
authors.lastname: Peters
authors.affiliation: Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Noginov