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
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
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.
MA Guo-Hong;QIAN Shi-Xiong;LEI Hong;WANG He-Zhou;WANG Rong-Qiu;LI Yong-Fang. Singlet Exciton Migration in a Conjugated Polymer by Picosecond Time-Resolved Photoluminescence[J]. 中国物理快报, 2001, 18(7): 944-946.
MA Guo-Hong, QIAN Shi-Xiong, LEI Hong, WANG He-Zhou, WANG Rong-Qiu, LI Yong-Fang. Singlet Exciton Migration in a Conjugated Polymer by Picosecond Time-Resolved Photoluminescence. Chin. Phys. Lett., 2001, 18(7): 944-946.
2001, Vol. 18 
