Femtosecond spectroscopy of phase II vanadyl phthalocyanine thin films

Akira Terasaki, Masahiro Hosoda, Tatsuo Wada, Akira Yamada, Hiroyuki Sasabe, Anthony F. Garito, Takayoshi Kobayashi

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)


The dynamics of excited electronic states in vanadyl phthalocyanine thin films of phase II stacking arrangement were studied by femtosecond time-resolved spectroscopy. Decay kinetics of bleaching observed at the lowest-energy absorption peak consisted of three components; an exciton-exciton annihilation component, an exciton-phonon coupling component, and a long-lived component which is presumably due to triplet states. The exciton-exciton annihilation rate was found to have t-1/2 time dependence. Both doping in polymer and tertiary-butyl peripheral substitution resulted in only a slight change in the exciton decay kinetics.

Original languageEnglish
Pages (from-to)161-168
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Issue number1-2
Publication statusPublished - 1992
Externally publishedYes
EventNonlinear Optics of Organic and Polymer Systems an Photonic Devices Symposium - Philadelphia, PA, USA
Duration: Apr 29 1991Apr 30 1991

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Condensed Matter Physics


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