Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.256, 757-762, 1994
Photoluminescence Studies of C-60 Single-Crystals
We present luminescence studies of solid C-60 for different morphologies such as C-60 films, polycrystalline C-60 powder, and C-60 single crystals. The number of spectrally resolvable peaks is highest for the single crystals as a consequence of reduced inhomogeneous broadening. The fluorescence spectrum of C-60 single crystals is composed of several defector surface-related C-60 emission centres. The fluorescence lines belonging to each of these so-called X-traps show the characteristic vibronic structure of molecular C-60 emission, i.e., they reflect the dominant T-1g-related false origins.
Keywords:FULLERENE C-60;SOLID C-60;PHOTOPHYSICAL PROPERTIES;ABSORPTION-SPECTRA;C60;LUMINESCENCE;STATES;FILMS;C-70;RESONANCE