Spontaneous emission control of colloidal nanocrystals using nanoimprinted photonic crystals

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Reboud, Vincent
Kehagias, Nikolaos
Torres, C. M. Sotomayor
Zelsmann, M.
Striccoli, M.
Curri, M. L.
Agostiano, A.
Tamborra, M.
Fink, M.
Reuther, F.
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The authors report on the fabrication and optical characterizations of two-dimensional photonic crystals fabricated by nanoimprint lithography in a nanocomposite polymer incorporating highly luminescent and red emitting (CdSe)ZnS core-shell colloidal nanocrystals. Photonic crystal structures enhance the light emitted from the quantum sized nanoparticles in the composite layer by slowing the propagation speed of the photons, thus increasing the coupling to the out-of-plane radiative modes. A 200% enhancement of the light collection is achieved compared to an unpatterned sample. (c) 2007 American Institute of Physics. (DOI:10.1063/1.2430625)
Light-emitting-diodes , Lithography , Extraction , Polymer , Fabrication , Cdse , Photonic crystals , Photoluminescence , Nanolithography , Polymers , Lattice constants
Reboud, V., Kehagias, N., Torres, C. M. S., Zelsmann, M., Striccoli, M., Curri, M. L., Agostiano, A., Tamborra, M., Fink, M., Reuther, F. and Gruetzner, G. (2007) 'Spontaneous emission control of colloidal nanocrystals using nanoimprinted photonic crystals', Applied Physics Letters, 90(1), pp. 011115. doi: 10.1063/1.2430625
© 2007 American Institute of Physics.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Winfield, R. J., Bhuian, B., O’Brien, S. and Crean, G. M. (2007) 'Refractive femtosecond laser beam shaping for two-photon polymerization', Applied Physics Letters, 90(11), pp. 111115 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.2713787