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Voltage tunable two-color quantum dot infrared photodetector
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10.1063/1.2956672
/content/aip/journal/apl/93/1/10.1063/1.2956672
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/1/10.1063/1.2956672
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Photocurrent spectra of the QDIP at different bias voltages measured in the normal incidence geometry at .

Image of FIG. 2.
FIG. 2.

Peak intensity dependence of the peak and the peak with respect to the positive bias voltage. The connection line between data points is guide to the eye.

Image of FIG. 3.
FIG. 3.

The photocurrent spectrum at together with a fitting (dashed line) by two deconvoluted Lorentzian peaks (dotted line).

Image of FIG. 4.
FIG. 4.

Proposed conduction band diagram with the involved transitions in the QDIP for a small (a) and a large (b) positive bias voltage. and are the two bound states of the dots while and show the two separate continuum states. The closed circle shows a state occupied with an electron and the open circle corresponds to an empty state. (c) depicts the shapes of wave function for , , , as well as .

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/content/aip/journal/apl/93/1/10.1063/1.2956672
2008-07-07
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Voltage tunable two-color InAs∕GaAs quantum dot infrared photodetector
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/1/10.1063/1.2956672
10.1063/1.2956672
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