- 作者: R. Chang, M. Hayashi, K. K. Liang and S. H. Lin
- 中文摘要:
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan, R.O.C.
A microscopic model is constructed to describe the excited states of MEH-PPV in thin film. It is suggested that in the high energy region, the nature of excited states in the film is very similar to the species observed in solution phase. Moreover the processes of energy transfer, vibrational relaxation and dissipation are considered to occur simultanesously, in contrast to the usual argument that assumes exciton migration occurs after vibrational motion reaches thermal equilibrium. In the low energy region, corresponding to the red-edge of absorption, the excited state behaves differently. We assume that there exists a low energy species due to the enhancement of coplanarity of polymers in thin film and the absorption spectrum can be fitted. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --