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Excitonic diffusion dynamics in ZnO
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10.1063/1.3690055
/content/aip/journal/apl/100/9/10.1063/1.3690055
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/9/10.1063/1.3690055
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) DRS data (squares) taken from (a) bulk ZnO and (b) ZnO NRs. Probe beams were spectrally filtered, just prior to the detector, at AX for (a) and the laser peak energy for (b) with a spectral window of 0.15 nm. The solid lines show the results of bi-exponential fit. The insets show PL (dotted line) and CW reflectivity (solid line) compared to the original laser spectrum (dashed line). Numbers in the insets are the full width half maximum.

Image of FIG. 2.
FIG. 2.

(Color online) (a) The diffusion-induced carrier density vs. depth for different times, assuming the diffusion coefficient D is 8 cm2/s. (b) Comparison of carrier density changes using a relaxation model (red dashed line with decay time constant of 1.5 ps) and a diffusion model (solid black line). (c) The instantaneous relaxation rates obtained from (b).

Image of FIG. 3.
FIG. 3.

(Color online) Instantaneous relaxation rates at (a) AX, (b) BX of bulk, and (c) nanorods. The scattered lines are experiments, whereas the solid lines are fitting curves.

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/content/aip/journal/apl/100/9/10.1063/1.3690055
2012-02-29
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Excitonic diffusion dynamics in ZnO
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/9/10.1063/1.3690055
10.1063/1.3690055
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