TIME DECAY BEHAVIOR OF FULLERENE-C60 STUDIED BY TIME-RESOLVED PHOTOLUMINESCENCE
SONG JIE (宋捷)a, LI FEI-MING (李飞鸣)a, QIAN SUI-XIONG (钱士雄)a, LI YU-FEN (李郁芬)a, PENG WEN-JI (彭文基)b, ZHOU JIAN-YING (周建英)b, YU ZHEN-XIN (余振新)b
a Department Physics of Fudan University, Shanghai 200433, China; b State Key Laboratory of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275, China
Abstract The time-resoved photoluminescence spectra of C60 have been studied from toluence solution at room temperature and from thin film at both room temperature and 77K. A photoluminescence peak at about 730nm was detected from solution at room temperature and film at 77K, in which lifetimes waz determined to be 1.1 and 0.9ns, respectively. At room temperature, the photoluminescence peak of thin film shifted to 740 nm with fast decay behavior which was fitted well to a double-exponential lifetimes with $\tau$1 = 0.087ns, $\tau$2= 0.68 ns. Two relaxation mechanisms are given tentatively in explaining this phenomenon.
Received: 02 February 1994
Accepted manuscript online:
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