Femtosecond dynamics in organic thin films of fluoro-aluminium phthalocyanine

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

Femtosecond laser pulses are employed to study the dynamics of the absorption spectra of fluoro-aluminium phthalocyanine polycrystalline thin films. Following excitation by 620 nm pulses into the first electronic transition a very rapid energy relaxation of the excitons is observed within the 55 fs duration of the pump pulse. Following this process two extremely fast decay routes lead to the recovery of the ground state: exciton-exciton annihilation with an intensity-dependent decay of 550 fs at power density of 1.2 GW/cm2 and exciton-phonon coupling with a 4 ps decay time.

Original languageEnglish (US)
Pages (from-to)107-111
Number of pages5
JournalChemical Physics Letters
Volume148
Issue number2-3
DOIs
Publication statusPublished - Jul 8 1988

    Fingerprint

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this