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Emission studies on photonic crystals fabricated using dyed polystyrene colloids
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10.1063/1.2825636
/content/aip/journal/jap/102/12/10.1063/1.2825636
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/12/10.1063/1.2825636
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) SEM image for a photonic crystal made using PS-RhB colloidal spheres of diameter 302 nm (scale bar is ). (b) AFM image of the photonic crystal shows the (111) plane of the fcc lattice (scan area ). (c) CLSM image of the photonic crystal shows the size of the domains (scale bar is ).

Image of FIG. 2.
FIG. 2.

Absorption spectra for PS-RhB colloidal suspension (line 1) and for bare PS (nondyed) colloidal suspension (line 2). The peak shown using an arrow indicates the absorption due to the dye, which is absent for the bare colloidal suspension. The fluorescence spectrum for the PS-RhB colloidal suspension (line 3, dashed-dotted line) shows the emission peak at 580 nm (marked with a vertical line) when excited at 532 nm.

Image of FIG. 3.
FIG. 3.

(Color online) (a) The reflection (black line) and transmission (blue line) spectra for a photonic crystal fabricated using PS-RhB colloids having a diameter of 302 nm show the photonic stop band at 609 nm. The dashed-dotted line is the transmission spectrum for the photonic crystal made from nondyed PS spheres having a sphere diameter of 280 nm. (b) Photonic stop band at angles of incidence of (at the extreme right), , , , , and (at the extreme left) for PS-RhB photonic crystal. The photonic stop band shifts steadily toward shorter wavelengths with an increase in the angle of incidence, as shown by the arrow.

Image of FIG. 4.
FIG. 4.

Schematic of the experimental arrangement used in the emission studies

Image of FIG. 5.
FIG. 5.

(Color online) (a) Experimentally measured emission intensity (solid line) and percentage of reflection (dotted line) as a function of wavelength, at incident angles of , , , , and . (b) Detection angle dependence of emission obtained from the model.

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/content/aip/journal/jap/102/12/10.1063/1.2825636
2007-12-21
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Emission studies on photonic crystals fabricated using dyed polystyrene colloids
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/12/10.1063/1.2825636
10.1063/1.2825636
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