Exciton polariton in an organic–inorganic multiple-quantum-well crystal (C4H9NH3)2PbBr4 |
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| Authors: | Ryo Tamaki Yuko Arai Daisuke Ichikawa Masaya Inoue Hideyuki Kunugita Kazuhiro Ema |
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| Institution: | 1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain;3. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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| Abstract: | Exciton polariton in an organic–inorganic multiple-quantum-well (MQW) single crystal (C4H9NH3)2PbBr4 at low temperature has been investigated by photoluminescence excitation (PLE), reflection, and time-resolved photoluminescence measurements. Since (C4H9NH3)2PbBr4 has ideal two-dimensional excitons with an extremely large oscillator strength and forms self-organized MQW with a very short well-period (d～10 Å), polaritonic coupling among excitons is strong and extends over a large number of wells. Therefore, observed MQW polariton features were the same as those of bulk polaritons. We have also investigated relaxation dynamics of the MQW polariton in the same framework as discussions on bulk polaritons. |
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