Photoinduced polarization inversion of excitons in conjugated polymer films

Rouli Fu; Junhao Chu; Weimin Zheng; Guang-Yu Guo; Xin Sun

doi:10.1117/12.408368

29 November 2000 Photoinduced polarization inversion of excitons in conjugated polymer films

Rouli Fu, Junhao Chu, Weimin Zheng, Guang-Yu Guo, Xin Sun

Proceedings Volume 4086, Fourth International Conference on Thin Film Physics and Applications; (2000) https://doi.org/10.1117/12.408368
Event: 4th International Conference on Thin Film Physics and Applications, 2000, Shanghai, China

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.

Citation Download Citation

Rouli Fu, Junhao Chu, Weimin Zheng, Guang-Yu Guo, and Xin Sun "Photoinduced polarization inversion of excitons in conjugated polymer films", Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); https://doi.org/10.1117/12.408368

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