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Temperature-dependent photoluminescence study of C60 and C70

✍ Scribed by Eun-joo Shin; Jeunghee Park; Minyung Lee; Dongho Kim; Yung Doug Suh; Sung Ik Yang; Seung Min Jin; Seong Keun Kim

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 630 KB
Volume: 209
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)80112-3

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✦ Synopsis

The photoluminescence (PL) spectra of C6" and CT0 in toluene, as films on silicon and as KBr pellet, were obtained as a function of temperature. Different emission profiles are observed between the fullerenes in solution and in the solid form. The PL spectra of the C&solids are similar regardless of their substrates, while those of& show different emission profiles between the films on silicon and the pellet, which is believed to be due to the substrate-dependent stacking disorder resulting from the nonspherical shape of the molecule. The changes in emission intensity and profile upon temperature are observed in the PL spectra of solid C,, and &, suggesting the strong influence of rotational diffusion. The vibrational mode progressions are identified from the lowtemperature photoluminescence spectra of ChO and &,.

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