摘要
The mechanism of 2,9,16,23-tetra-heptadecylamido substituted vanadyl phthalocyanine Langmuir-Blodegett film was studied with femtosecond laser pulses.An ultrafast decay due to phonon-exciton coupling greatly affected by temperature,and exciton-exciton annihilation leading to the recovery of the ground state(T~lops)and an even slower relaxation were observed.
基金
the National Natural Science Foundation of China.
