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Efficient solution-processed infrared photovoltaic cells: Planarized all-inorganic bulk heterojunction devices via inter-quantum-dot bridging during growth from solution
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10.1063/1.2735674
/content/aip/journal/apl/90/18/10.1063/1.2735674
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/18/10.1063/1.2735674

Figures

Image of FIG. 1.
FIG. 1.

SEM images of the surface of a textured ITO substrate before nanocrystal deposition and the surfaces of an ITO substrate after nanocrystal deposition with and without the use of cross-linking molecules. [(a) and (b)] Bare textured ITO substrate (c) and (d) textured ITO after nanocrystal deposition without cross-linker, showing the exposed ITO which leads to short-circuited devices. Individual nanocrystals can be seen clustered in the crevices between sintered ITO particles. [(e) and (f)] Surface of functional devices after nanocrystal deposition utilizing cross-linkers to obtain a continuous nanocrystal overcoating. The feature to the left of (f) is a portion of the nanocrystal film that is not in focus.

Image of FIG. 2.
FIG. 2.

(Color online) Current-voltage curves of sintered device made with nanocrystals having a first excitonic transition at . The AM1.5 illumination intensity was . Monochromatic illumination intensities of 12 and were with light.

Image of FIG. 3.
FIG. 3.

(Color online) Current-voltage curves of sintered device made with nanocrystals having a first excitonic transition at . Monochromatic illumination intensities of 12 and were with light.

Image of FIG. 4.
FIG. 4.

(Color online) External quantum efficiency of sintered devices. The inset shows schematic of band positions of the materials used in devices. PbS conduction and valence bands are drawn for first excitonic transition nanocrystals by employing the effective mass approximation to modify bulk energy levels.

Tables

Generic image for table
Table I.

Effects of sintering treatment on the performance of photovoltaic devices. All measurements performed under illumination.

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/content/aip/journal/apl/90/18/10.1063/1.2735674
2007-05-02
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Efficient solution-processed infrared photovoltaic cells: Planarized all-inorganic bulk heterojunction devices via inter-quantum-dot bridging during growth from solution
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/18/10.1063/1.2735674
10.1063/1.2735674
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