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.
PbS colloidal quantum dot photoconductive photodetectors: Transport, traps, and gain
Rent:
Rent this article for
USD
10.1063/1.2800805
/content/aip/journal/apl/91/17/10.1063/1.2800805
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/17/10.1063/1.2800805
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Determination of sensitizing centers via photocurrent thermal quenching. (a) Photocurrent as a function of temperature at two illumination levels. The activation energy of the photocurrent is determined by the mobility activation energy. At higher temperatures photocurrent quenching is observed. (b) Photocurrent quenching taken as the photocurrent at higher temperatures with the mobility contribution component subtracted. The slope of the quenching provides the depth of the sensitizing centers from the conduction band. Two sensitizing centers are discovered with energy depths of and from the conduction band.

Image of FIG. 2.
FIG. 2.

(Color online) Determination of sensitizing centers via transient photocurrent measurements. (a) Transient photocurrent measurements as a function of temperature exhibit three exponential decay components with time constants at room temperature of , , and at . (b) The plot shows the dependence of the time constants as a function of temperature and provides additional information on the sensitizing centers’ depths. This technique reveals in the addition of the 0.1 and another center from the conduction band. (c) Band diagram of the proposed model for photoconductivity in PbS quantum dot photodetectors.

Loading

Article metrics loading...

/content/aip/journal/apl/91/17/10.1063/1.2800805
2007-10-23
2014-04-19
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: PbS colloidal quantum dot photoconductive photodetectors: Transport, traps, and gain
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/17/10.1063/1.2800805
10.1063/1.2800805
SEARCH_EXPAND_ITEM