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Applied Physics Letters / Volume 96 / Issue 19 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 96, 191901 (2010); http://dx.doi.org/10.1063/1.3422485 (3 pages)

Viability of using near infrared PbS quantum dots as active materials in luminescent solar concentrators

G. V. Shcherbatyuk1, R. H. Inman1, C. Wang2, R. Winston1,2, and S. Ghosh1

1School of Natural Sciences, University of California, Merced, California 95343, USA
2School of Engineering, University of California, Merced, California 95343, USA

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(Received 16 February 2010; accepted 13 April 2010; published online 11 May 2010)

The performance of chemically synthesized lead sulfide (PbS) quantum dots (QDs) in planar, nontracking luminescent solar concentrators (LSCs) is evaluated using spectroscopic and photovoltaic techniques. Spatially resolved measurements are used to investigate and analyze the role of reduced self-absorption on the LSC efficiency. From comparative measurements of samples with Rhodamine B and CdSe/ZnS QDs it is established that PbS LSCs generate nearly twice the photocurrent in silicon cells than the other materials, achieving an integrated optical efficiency of 12.6%. This is attributed primarily to the broadband absorption of PbS which allows optimum harvesting of the solar spectrum.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

infrared spectra, integrated optics, IV-VI semiconductors, lead compounds, luminescent devices, photoconductivity, semiconductor quantum dots, solar cells, visible spectra

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3422485

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

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