Enhanced and polarized emission from single colloidal CdSe/CdS nanocrystals coupled to a one-dimensional gold grating

F Eloi 1 H Frederich 1 F Mazéas 1 A Kumar 2 S Buil 1 Xavier Quélin 1 A Bouhelier 2 J-C Weeber 2 M Nasilowski 3 B Dubertret 3 G Colas Des Francs 2 J.-P Hermier 1, 4
1 GEMAC - Groupe d'Etude de la Matière Condensée
2 LICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
3 LPEM - Laboratoire de Physique et d'Etude des Matériaux
4 IUF - Institut Universitaire de France
Abstract : We present in detail the fluorescence properties of single thick-shell CdSe/CdS colloidal nanocrystals coupled to a linear one-dimensional gold grating. In addition to the photoluminescence decay rate increase, we point out that the polarization ratio of the emission is dramatically enhanced. It overcomes 80% and can reach values close to unity. Experimental results are successfully compared to theoretical predictions. Blinking suppression is also reported.
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Submitted on : Thursday, March 16, 2017 - 4:19:04 PM
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F Eloi, H Frederich, F Mazéas, A Kumar, S Buil, et al.. Enhanced and polarized emission from single colloidal CdSe/CdS nanocrystals coupled to a one-dimensional gold grating. Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94, pp.85301 - 85301. ⟨10.1103/PhysRevB.94.085301⟩. ⟨hal-01491328⟩

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