✦ LIBER ✦

Nonlinear excited-state dynamics of a thin copper phthalocyanine film by femtosecond transient grating spectroscopy

✍ Scribed by Tsuyoshi Asahi; Naoto Tamai; Tatsuya Uchida; Noburo Shimo; Hiroshi Masuhara

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 442 KB
Volume: 234
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)00047-8

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✦ Synopsis

Transient diffraction spectra and their rise and decay dynamics of a thin copper phthalocyanine film ( = 50 nm thickness) were investigated by femtosecond transient grating spectroscopy using a white-light continuum as a probe pulse. Temporal profiles of first-and second-order diffractions were strongly dependent on the excitation intensity, which was interpreted in terms of exciton-exciton annihilation with a time-dependent rate constant.