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Optical alignment of the exciton in ZnO nanoparticles
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10.1063/1.3504252
/content/aip/journal/apl/97/19/10.1063/1.3504252
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/19/10.1063/1.3504252
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) TEM image of the 4.0 nm NPs dispersed and vertically aligned onto the hydroxyl functionalized substrate. (b) HRTEM cross section image perpendicular to the [0001] direction ( axis) of the same NPs.

Image of FIG. 2.
FIG. 2.

Normalized PL spectra of the NPs of different size, following a nonresonant excitation (excitation wavelength ). The vertical arrow indicates the position of the exciton transition in bulk ZnO.

Image of FIG. 3.
FIG. 3.

6.6 nm NPs linear polarization spectra after a QR excitation at 355 nm (squares) and 360 nm (triangles). Black and gray arrows indicate the position of the different laser excitations. The PL spectrum following a nonresonant excitation (290 nm) is also displayed (solid line). Circles reproduces the 6.6 nm NPs linear polarization degree after the 360 nm QR circular excitation .

Image of FIG. 4.
FIG. 4.

Time decays of the co- and counter- polarized components of the PL after a excitation at 360 nm of the 6.6 nm NPs. The corresponding PL linear polarization degree is also plotted (blue circles). The dotted line is a guide to the eye. The PL intensities are integrated between 365 and 366 nm ( below excitation).

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/content/aip/journal/apl/97/19/10.1063/1.3504252
2010-11-12
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical alignment of the exciton in ZnO nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/19/10.1063/1.3504252
10.1063/1.3504252
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