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Spontaneous emission control of colloidal nanocrystals using nanoimprinted photonic crystals
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Comparison between absorption and PL spectra of (CdSe)ZnS NCs in their native solution (blue line) and after the incorporation in the mr-NIL 6000 polymer (red line) at room temperature (excitation wavelength of ).

Image of FIG. 2.
FIG. 2.

(Color online) (a) Scanning electron microscopy (SEM) micrographs of tilted view of a silicon stamp containing two-dimensional honeycomb array of pillars. (b) SEM micrographs of nanoimprinted photonic crystals in mr-NIL 6000 containing (CdSe)ZnS NCs.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Emission spectra for (CdSe)ZnS NCs taken before (violet solid line) and after (gray solid line) the nanoimprint process. (b) PL spectra of nanoimprinted unpatterned mr-NIL 6000 with (CdSe)ZnS NCs on a Pyrex substrate (gray line), PL spectra of a 2D photonic crystal with a lattice constant and hole radius of (blue line), with a lattice and hole radius of (red line), and with a lattice and hole radius of (green line).

Image of FIG. 4.
FIG. 4.

(Color online) Photonic band structure of a honeycomb lattice of air hole PhC calculated with a plane-wave-basis frequency-domain method (dotted lines, TM polarization; solid lines, TE polarization) is the lattice constant, is the wavelength, and is the light speed in vacuum. Holes radius is , The blue, red, and green bands correspond to the emission bandwidth of (CdSe)ZnS for PhC lattice constants , , and , respectively. The red line represents the light cone.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spontaneous emission control of colloidal nanocrystals using nanoimprinted photonic crystals