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Multiple exciton generation and electrical extraction from a PbSe quantum dot photoconductor
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View: Figures


Image of FIG. 1.
FIG. 1.

PbSe nanocrystal and thin film characteristics. (a) Absorption spectrum from PbSe QDs dissolved in a solvent (inset: transmission electron microscopy image of the synthesized PbSe QDs), (b) device structure (upper), and SEM image of the PbSe film [(1) cross section and (2) Top view].

Image of FIG. 2.
FIG. 2.

properties of the PbSe thin film device. (a) curve of hydrazine, the treated and untreated PbSe nanocrystal film photoconductors under of AM1.5G illumination (inset: generated photocurrent from hydrazine treated PbSe photoconductor under of AM1.5G illumination, active device area is ). (b) Hysteresis obtained for different directions of the scan.

Image of FIG. 3.
FIG. 3.

Multiple exciton generation and extraction in a PbSe nanocrystal device. (a) Normalized external quantum yield of the hydrazine treated PbSe nanocrystal film under bias plotted with the previously reported optically determined MEG measurements from PbSe nanocrystals in solution ( and from Refs. 18 and 21 ). (b) Gated illumination response of PbSe nanocrystal film for ( absorption) and ( absorption) illuminations.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multiple exciton generation and electrical extraction from a PbSe quantum dot photoconductor