| Original Articles |
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Singlet Exciton Migration in a Conjugated Polymer by Picosecond Time-Resolved Photoluminescence |
| MA Guo-Hong1,2;QIAN Shi-Xiong1;LEI Hong3;WANG He-Zhou3;WANG Rong-Qiu4;LI Yong-Fang4 |
| 1Department of Physics, Fudan University, Shanghai
200433
2Key Laboratory of Applied Surface Physics, Fudan University, Shanghai 200433
3Institute of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275
4Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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MA Guo-Hong, QIAN Shi-Xiong, LEI Hong et al 2001 Chin. Phys. Lett. 18 944-946 |
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Abstract The transient photoluminescence (PL) of DO-PPV (poly-(2,5-dioctyloxy-1,4-phenylene vinylene)) solution in chloroform was
investigated by picosecond time-resolved PL spectroscopy. An ultrafast rise of PL and the following single exponential decay with a time constant about 400ps were assigned to the formation of intrachain exciton and its decay process, respectively. The redshift of the PL emission spectrum with time was caused by the subsequent exciton migration among the different conjugated segments in the DO-PPV polymer.
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| Keywords:
64.41.+e
71.10.Li
32.50.+d
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Published: 01 July 2001
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| PACS: |
64.41.+e
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71.10.Li
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(Excited states and pairing interactions in model systems)
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32.50.+d
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(Fluorescence, phosphorescence (including quenching))
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