頁籤選單縮合
題名 | Investigations of Ultrafast Dynamics in Light-emitting Polymers= |
---|---|
作者 | 張瑞麟; 林倫年; 梁國淦; 林聖賢; Chang, R.; Hayashi, M.; Liang, K. K.; Lin, S. H.; |
期刊 | Journal of the Chinese Chemical Society |
出版日期 | 20010600 |
卷期 | 48:3 2001.06[民90.06] |
頁次 | 頁641-649 |
分類號 | 340 |
語文 | eng |
關鍵詞 | Energy transfer; Vibrational relaxation; Time-resolved photoluminescence; |
英文摘要 | 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. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。