Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 25 February 2000:
Vol. 287. no. 5457, pp. 1471 - 1473
DOI: 10.1126/science.287.5457.1471
Prev | Table of Contents | Next

Reports

Control of Thickness and Orientation of Solution-Grown Silicon Nanowires

Justin D. Holmes, dagger Keith P. Johnston, R. Christopher Doty, Brian A. Korgel *

Bulk quantities of defect-free silicon (Si) nanowires with nearly uniform diameters ranging from 40 to 50 angstroms were grown to a length of several micrometers with a supercritical fluid solution-phase approach. Alkanethiol-coated gold nanocrystals (25 angstroms in diameter) were used as uniform seeds to direct one-dimensional Si crystallization in a solvent heated and pressurized above its critical point. The orientation of the Si nanowires produced with this method could be controlled with reaction pressure. Visible photoluminescence due to quantum confinement effects was observed, as were discrete optical transitions in the ultraviolet-visible absorbance spectra.

Department of Chemical Engineering and Texas Materials Institute, University of Texas, Austin, TX 78712, USA.
*   To whom correspondence should be addressed. E-mail: korgel{at}mail.che.utexas.edu

dagger    Present address: Department of Chemistry, University College Cork, Ireland.

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
From the Cover: An information-bearing seed for nucleating algorithmic self-assembly.
R. D. Barish, R. Schulman, P. W. K. Rothemund, and E. Winfree (2009)
PNAS 106, 6054-6059
   Abstract »    Full Text »    PDF »
Small-Diameter Silicon Nanowire Surfaces.
D. D. D. Ma, C. S. Lee, F. C. K. Au, S. Y. Tong, and S. T. Lee (2003)
Science 299, 1874-1877
   Abstract »    Full Text »    PDF »
Spontaneous Organization of Single CdTe Nanoparticles into Luminescent Nanowires.
Z. Tang, N. A. Kotov, and M. Giersig (2002)
Science 297, 237-240
   Abstract »    Full Text »    PDF »
Electrochemistry and Electrogenerated Chemiluminescence from Silicon Nanocrystal Quantum Dots.
Z. Ding, B. M. Quinn, S. K. Haram, L. E. Pell, B. A. Korgel, and A. J. Bard (2002)
Science 296, 1293-1297
   Abstract »    Full Text »    PDF »
Dielectrophoretic Assembly of Electrically Functional Microwires from Nanoparticle Suspensions.
K. D. Hermanson, S. O. Lumsdon, J. P. Williams, E. W. Kaler, and O. D. Velev (2001)
Science 294, 1082-1086
   Abstract »    Full Text »    PDF »
Ultrathin Single-Crystalline Silver Nanowire Arrays Formed in an Ambient Solution Phase.
B. H. Hong, S. C. Bae, C.-W. Lee, S. Jeong, and K. S. Kim (2001)
Science 294, 348-351
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)