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Enhancement of carbon nanotube photoluminescence by photonic crystal nanocavities
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10.1063/1.4757876
/content/aip/journal/apl/101/14/10.1063/1.4757876
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/14/10.1063/1.4757876
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Scanning electron micrographs of as-fabricated devices with a = 380 nm. The top panel shows a plan view, and the middle panel is an enlarged view of the cavity. The bottom panel shows a cross section of the slab structure. The scale bars are 2.0, 0.5, and for the top, middle, and bottom panels, respectively. (b) Top and bottom panels show PL spectra taken at the cavity with and without nanotubes, respectively, for devices with a = 380 nm and r = 100 nm. Inset shows a higher resolution spectrum of the fundamental mode. Circles are data and the solid line is a Lorentzian fit. An excitation laser wavelength of 750 nm and a power of 0.5 mW are used.

Image of FIG. 2.
FIG. 2.

(a) PL spectra taken on the cavity (red) and off the cavity (blue) for a device with a = 382 nm and r = 104 nm. Nanotubes have been deposited on this device by spin coating at 1400 rotations per minute. The excitation wavelength is 846 nm and the power is 0.3 mW. (b) A scanning electron micrograph showing the area of the PL image in (c). A device with the same a and r as in (a) but without nanotube deposition is used. (c) A PL image of the same device as shown in (a), taken with a detection window centered at 1395 nm with a width of 5.2 nm. In order to construct this image, the PL counts have been integrated over the 5 pixels corresponding to this spectral width. The scale bars in (b) and (c) are .

Image of FIG. 3.
FIG. 3.

The top panel shows a PL spectrum from nanotube solution taken with an excitation wavelength of 774 nm. The bottom panel shows PL spectra for devices with r = 100 nm and a ranging from 350 nm to 400 nm, taken with an excitation wavelength of 750 nm and a power of 0.5 mW. The curves are offset for clarity.

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/content/aip/journal/apl/101/14/10.1063/1.4757876
2012-10-05
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of carbon nanotube photoluminescence by photonic crystal nanocavities
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/14/10.1063/1.4757876
10.1063/1.4757876
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