The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution

Bernhard Goller; Gazi N Aliev; Dmitry Kovalev; Paul A Snow

The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution

Bernhard Goller, Gazi N Aliev, Dmitry Kovalev, Paul A Snow

Department of Physics

Research output: Chapter or section in a book/report/conference proceeding › Book chapter

Abstract

The dissolution rate of porous silicon layers was measured in-situ during etching by HF and NaOH solutions. Cellular models were applied to the structure of the pSi from which the expected rates of change of porosity with time were calculated. Experimental results indicate that the nanostructure of porous silicon may be best modeled as an open-cell foam. This is in contrast to the honeycomb model often used which is not supported by the experimental data.

Original language	English
Title of host publication	In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology
Place of Publication	Warrendale
Publisher	Materials Research Society
Pages	171-176
Number of pages	6
Volume	1146
ISBN (Print)	9781615677726
Publication status	Published - 2008
Event	2008 MRS Fall Meeting, December 1, 2008 - December 5, 2008 - Boston, MA, USA United States Duration: 1 Dec 2008 → …

Publication series

Name	Materials Research Society Symposium Proceedings
Publisher	Materials Research Society

Conference

Conference	2008 MRS Fall Meeting, December 1, 2008 - December 5, 2008
Country/Territory	USA United States
City	Boston, MA
Period	1/12/08 → …

Keywords

nano-porous silicon
honeycomb models
NaOH solutions
porous silicon layers
in-situ
time resolved measurement
dissolution rates
experimental data
cellular model
open-cell foams

SOUND-LIGHT INTERACTIONS IN SPATIALLY PERIOD NANOPOROUS SILI CON STRUCTURES
Snow, P. (PI), Birks, T. (CoI) & Russell, P. S. (CoI)
Engineering and Physical Sciences Research Council
5/09/05 → 4/02/10
Project: Research council

Cite this

Goller, B., Aliev, G. N., Kovalev, D., & Snow, P. A. (2008). The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution. In In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology (Vol. 1146, pp. 171-176). (Materials Research Society Symposium Proceedings). Materials Research Society.

The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution. / Goller, Bernhard; Aliev, Gazi N; Kovalev, Dmitry et al.
In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology. Vol. 1146 Warrendale: Materials Research Society, 2008. p. 171-176 (Materials Research Society Symposium Proceedings).

Research output: Chapter or section in a book/report/conference proceeding › Book chapter

Goller, B, Aliev, GN, Kovalev, D & Snow, PA 2008, The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution. in In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology. vol. 1146, Materials Research Society Symposium Proceedings, Materials Research Society, Warrendale, pp. 171-176, 2008 MRS Fall Meeting, December 1, 2008 - December 5, 2008, Boston, MA, USA United States, 1/12/08.

Goller B, Aliev GN, Kovalev D, Snow PA. The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution. In In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology. Vol. 1146. Warrendale: Materials Research Society. 2008. p. 171-176. (Materials Research Society Symposium Proceedings).

Goller, Bernhard ; Aliev, Gazi N ; Kovalev, Dmitry et al. / The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution. In-Situ Studies Across Spatial and Temporal Scales for Nanoscience and Technology. Vol. 1146 Warrendale : Materials Research Society, 2008. pp. 171-176 (Materials Research Society Symposium Proceedings).

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abstract = "The dissolution rate of porous silicon layers was measured in-situ during etching by HF and NaOH solutions. Cellular models were applied to the structure of the pSi from which the expected rates of change of porosity with time were calculated. Experimental results indicate that the nanostructure of porous silicon may be best modeled as an open-cell foam. This is in contrast to the honeycomb model often used which is not supported by the experimental data.",

keywords = "nano-porous silicon, honeycomb models, NaOH solutions, porous silicon layers, in-situ, time resolved measurement, dissolution rates, experimental data, cellular model, open-cell foams",

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AB - The dissolution rate of porous silicon layers was measured in-situ during etching by HF and NaOH solutions. Cellular models were applied to the structure of the pSi from which the expected rates of change of porosity with time were calculated. Experimental results indicate that the nanostructure of porous silicon may be best modeled as an open-cell foam. This is in contrast to the honeycomb model often used which is not supported by the experimental data.

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KW - time resolved measurement

KW - dissolution rates

KW - experimental data

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KW - open-cell foams

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PB - Materials Research Society

CY - Warrendale

T2 - 2008 MRS Fall Meeting, December 1, 2008 - December 5, 2008

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The morphology of nanoporous silicon investigated by time-resolved measurement of changes to the porosity during dissolution

Abstract

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Keywords

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SOUND-LIGHT INTERACTIONS IN SPATIALLY PERIOD NANOPOROUS SILI CON STRUCTURES

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