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Science 21 October 2005:
Vol. 310. no. 5747, pp. 462 - 465
DOI: 10.1126/science.1117908
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Reports

Air-Stable All-Inorganic Nanocrystal Solar Cells Processed from Solution

Ilan Gur,1,3 Neil A. Fromer,1 Michael L. Geier,3 A. Paul Alivisatos1,2*

We introduce an ultrathin donor-acceptor solar cell composed entirely of inorganic nanocrystals spin-cast from solution. These devices are stable in air, and post-fabrication processing allows for power conversion efficiencies approaching 3% in initial tests. This demonstration elucidates a class of photovoltaic devices with potential for stable, low-cost power generation.

1 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
2 Department of Chemistry, University of California, Berkeley, CA 94720, USA.
3 Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.

* To whom correspondence should be addressed. E-mail: alivis{at}berkeley.edu

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