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"Nanowire dye-sensitized
solar cells,"
by Matt Law, Lori E. Greene, Justin C. Johnson, Richard Saykally, and
Peidong Yang, Nature Materials, 4(6): 455-9, June 2005.
[Authors' affiliations: University of
California, Berkeley; Lawrence Berkeley National Lab, Berkeley, CA]
Abstract: "Excitonic solar
cells--including organic, hybrid organic-inorganic and dye-sensitized cells
(DSCs)--are
promising devices for inexpensive, large-scale solar energy conversion. The
DSC is currently the most efficient and
stable excitonic photocell. Central to this device is a thick nanoparticle
film that provides a large surface area for the
adsorption of light-harvesting molecules. However, nanoparticle DSCs rely on
trap-limited diffusion for electron transport, a slow mechanism that can
limit device efficiency, especially at longer wavelengths. Here we introduce
a version of the dye-sensitized cell in which the traditional nanoparticle
film is replaced by a dense array of oriented, crystalline ZnO nanowires.
The nanowire anode is synthesized by mild aqueous chemistry and features a
surface area up to one-fifth as large as a nanoparticle cell. The direct
electrical pathways provided by the nanowires ensure the rapid collection of
carriers generated throughout the device, and a full Sun efficiency of 1.5%
is demonstrated, limited primarily by the surface area of the nanowire
array."
This 2005 report from Nature Materials was cited 25 times
in current journal articles indexed by Thomson Scientific during
March-April 2007. No other paper published over the last two years and
categorized under the broad heading of chemistry collected as many citations
during that two-month period. Prior to the most recent bimonthly count,
citations to the paper have accrued as follows:
January-February 2007: 15 citations
November-December 2006: 11
September-October 2006: 12
July-August 2006: 16
May-June 2006: 15
March-April 2006: 9
January-February 2006: 5
November-December 2005: 1
September-October 2005: 2
July-August 2005: 2
Total citations to date: 113
SOURCE: Hot
Papers Database Included with a subscription to the print newsletter Science
Watch®, available from the
Research Services Group. Packaged on a CD that is mailed with each Science
Watch issue, the Hot
Papers Database contains data on hundreds of highly cited papers published
during the last two years. User interface permits searching by author,
organization, journal, field, and more. Total citations, as well as citations
accrued during successive bimonthly periods, can be assessed and graphed. An
updated CD containing the most recent bimonthly data is mailed with every new
issue of Science
Watch,
six times a year. The CD also includes an electronic version of the Science
Watch
issue in HTML format, for personal desktop access
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