Photodegradation Effects on the Emission Properties of an Amplifying Poly(9,9-dioctylfluorene) Active Waveguide Operating in Air

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Abstract

We investigated the effects of photodegradation on the emission properties of a poly(9,9-dioctylfluorene) (PF8) active waveguide operating in air. We demonstrate that the PF8 degradation results in an unexpected wavelength dependent intensity variation, with an intensity enhancement of the PF8 0–0 line, an exponential decrease of the amplified spontaneous emission (ASE) intensity stronger than the one expected due to exciton quenching and a weak intensity quenching in the green emission range. We ascribe these results to the PF8 exciton quenching and keto defect formation due to photodegradation, affecting not only the exciton densities but also the waveguide losses, reducing the intrinsic PF8 self-absorption and increasing the keto defect absorption.

Autore Pugliese

Tutti gli autori

  • M. Anni

Titolo volume/Rivista

JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL

Anno di pubblicazione

2012

ISSN

1520-6106

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

4

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile