PREPARATION AND OPTICAL PROPERTIES OF SiO_2 AND SiO_2-TiO_2 GELS DOPED FULLERENE

摘要

New composites of fullerene/SiO_2 and fullerene/SiO_2-TiO_2 systems have been synthesized by selecting suitable solvents and special sol-gel processes. Absorption and fluorescence spectra of the composites were measured and discussed. Luminescence effects of the composites under 532nm light excitation can be obtained at room temprature. With a Q-switching Nd:YAG laser(532nm), the optical limiting effects of the materials were observed and described.