摘要
The localized vibrational modes of exciton and polaron are investigated, and the results show that the frequencies of the three even parity modes of exciton are very different from those of polaron. For the exciton, three modes are distinctly separated;but, for the polaron, two modes with higher frequencies are close to each other, Then, it is possible to distinguish exciton from polaron by watching their Roman spectra. Therefore, the localized mode may be used to specify the exciton and polaron in the electroluminesent polymers.
作者
姜浩
徐晓华
孙鑫
KYonemitsu
JIANG Hao;XU Xiao-hua;SUN Xin;KYonemitsu(T.D.Lee Laboratory and Department of Physics,Fudan University,Shanghai 200433;National Laboratory of Infrared Physics,Shanghai Institute for Technical Physics,Shanghai 200083;Institute for Molecular Science,Okazaki 444-8585,Japan)
基金
the National Natural Science Foundation of China under Grant Nos.59790050 and 19874014
National Project 863-715-010
the Shanghai Center of Applied Physics.
