1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Type-II core/shell nanoparticle induced photorefractivity
Rent:
Rent this article for
USD
10.1063/1.3596437
/content/aip/journal/apl/98/23/10.1063/1.3596437
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/23/10.1063/1.3596437
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Quantum confinement leads to an enhanced recombination of photogenerated electron–hole pairs inside a core QD. (b) Photocharge generation is enhanced in a type-II core/shell structure QD by separating electron–hole pairs and delocalizing them in the core and shell region, respectively. (c) Schematic of the device architecture used to measure photorefractivity.

Image of FIG. 2.
FIG. 2.

Absorption and PL spectra of CdSe core QDs (dotted line) and CdSe/CdTe type-II QDs (solid line) in chloroform. The inset shows a TEM of the CdSe/CdTe QDs. The scale bar is 20 nm.

Image of FIG. 3.
FIG. 3.

(a) Absorbance of the of the control sample (solid line), CdSe sensitized sample (dotted line), and CdSe/CdTe sensitized sample (dashed line). The arrow indicates the excitation energy. (b) Photocurrent as a function of the external electric field for the control sample (triangles), CdSe sensitized (squares), and CdSe/CdTe sensitized (circles) polymer composites. The inset shows a plot of the photocharge generation quantum efficiencies in these samples.

Image of FIG. 4.
FIG. 4.

(a) Transmitted intensities of the two beams in the CdSe sensitized (stars) and CdSe/CdTe sensitized (open circles) samples at a bias of . One of the two beams is switched on at 5 s and turned off at 26 s. (b) Plots of 2BC net-gain coefficients as a function of the applied electric field. (c) FWM internal diffraction efficiencies as a function of the applied electric field. Squares and circles are data for CdSe sensitized and CdSe/CdTe sensitized composites, respectively. The inset shows a plot of the refractive-index construction time as a function of the applied electric field.

Loading

Article metrics loading...

/content/aip/journal/apl/98/23/10.1063/1.3596437
2011-06-08
2014-04-23
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Type-II core/shell nanoparticle induced photorefractivity
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/23/10.1063/1.3596437
10.1063/1.3596437
SEARCH_EXPAND_ITEM