Slow propagation of photon-like polaritons generated by exciton-exciton scattering in ZnO thin films
1 Venture Business Laboratory, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
2 Department of Material Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
3 Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto-cho, Sumiyoshi-ku, Osaka 558-8585, Japan
4 Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen, Naka-ku, Sakai, Osaka 599-8531, Japan,
We report on the first observation of the thickness-dependent photoluminescence-decay time of exciton-exciton scattering in ZnO thin films, which indicates the slower propagation of photon-like polaritons compared to that in bulk by two orders magnitude.
© Owned by the authors, published by EDP Sciences, 2013
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