Author/Authors :
Hou، نويسنده , , Yuanyuan and Liu، نويسنده , , Bingbing and Ma، نويسنده , , Hongan and Wang، نويسنده , , Lin and Zhao، نويسنده , , Zhi-Qiang and Cui، نويسنده , , Tian and Hu، نويسنده , , Qiang and Chen، نويسنده , , Guang-ao and Liu، نويسنده , , Dedi and Yu، نويسنده , , Shidan and Jia، نويسنده , , Xiaopeng and Zou، نويسنده , , Guangtian and Sundqvist، نويسنده , , B.، نويسنده ,
Abstract :
C60 rods with nano- and submicrometer dimensions were polymerized at 4.5 GPa and 973 K. Raman spectroscopy showed that the material transformed into a rhombohedral polymeric structure under high pressure and high temperature (HPHT) conditions. The HPHT polymerized samples keep the original rod shape. The position dependence of photoluminescence (PL) spectra have been studied on the rhombohedral polymer C60 rods at room temperature. The intensity of the 1.74 eV peak from the rhombohedral phase varies systematically between the edge of and the middle of the rod. Our results indicate that the 1.74 eV peak originates from surface defects.
