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Proceedings Paper

Photoinduced polarization inversion of excitons in conjugated polymer films
Author(s): Rouli Fu; Junhao Chu; Weimin Zheng; Guang-Yu Guo; Xin Sun
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Paper Abstract

The study shows that, in a conjugated polymer, there exists a novel photo-induced phenomenon: a photo-induced polarization inversion, when a single-exciton is photoexcited and becomes a bi-exciton. The reason is that, in a conjugated polymer, a single-exciton displays normal polarization, whereas a bi-exciton exhibits negative polarization. The physical significance of negative polarization is explored. Photo-induced polarization inversion is an ultrafast switching process, which could be used to make photo-induced ultrafast switch devices.

Paper Details

Date Published: 29 November 2000
PDF: 4 pages
Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); doi: 10.1117/12.408368
Show Author Affiliations
Rouli Fu, Shanghai Institute of Technical Physics (China)
Junhao Chu, Shanghai Institute of Technical Physics (China)
Weimin Zheng, Shanghai Institute of Technical Physics (China)
Guang-Yu Guo, National Taiwan Univ. (Taiwan)
Xin Sun, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 4086:
Fourth International Conference on Thin Film Physics and Applications
Junhao Chu; Pulin Liu; Yong Chang, Editor(s)

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