[en] We have analysed the unusual light induced changes in the Raman spectra of C60 single crystals and thin films. This changes revealed a strong dependence on the exposure of the material to ambient conditions. The changes are suppressed for temperatures above 80 C and for temperatures moderately below room temperature. Excitation to a triplet state and interaction with oxygen are considered as the main sources for the un unusual behavior of the spectra. (orig.)
Source
Kuzmany, H. (ed.) (Vienna Univ. (Austria). Inst. fuer Festkoerperphysik); Fink, J. (ed.) (Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Nukleare Festkoerperphysik); Mehring, M. (ed.) (Stuttgart Univ. (Germany). Physikalisches Teilinstitut 2); Roth, S. (ed.) (Max-Planck-Institut fuer Festkoerperforschung, Stuttgart (Germany)); Springer Series in Solid-State Sciences; v. 117; 449 p; ISBN 3-540-57415-8; 
; 1993; p. 255-258; Springer; Berlin (Germany); 1. international winterschool on electronic properties of novel materials (IWEPNM-1): Electronic properties of fullerenes; Kirchberg (Austria); 6-13 Mar 1993; ISSN 0171-1873;
; 1993; p. 255-258; Springer; Berlin (Germany); 1. international winterschool on electronic properties of novel materials (IWEPNM-1): Electronic properties of fullerenes; Kirchberg (Austria); 6-13 Mar 1993; ISSN 0171-1873;