Evidence of the Nano-sized Si Microstructure of Porous Si From
Scanning Tunneling Microscopy

Chin. Phys. Lett.

1994, Vol. 11

Issue (6): 390-392 DOI:

Original Articles

Evidence of the Nano-sized Si Microstructure of Porous Si From Scanning Tunneling Microscopy

WENG Yumin;YANG Xinju;CHEN Yufeng;ZONG Xiangfu

Department of Materials Science, Fudan University 200433

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WENG Yumin, YANG Xinju, CHEN Yufeng et al 1994 Chin. Phys. Lett. 11 390-392

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Abstract Scanning tunneling microscopy was used to observe the morphological feature of luminescent porous Si Results show that the surface of porous Si consists of randomly distributed nano-sized Si grains, which may be Si clusters. No clear interface was found between the grains. Its microstructure looks like a sponge. Visible photoluminescence in porous Si is most likely due to the carrier confinement in this microstructure.

Keywords: 36.40.+d 74.50.+r 78.55.-m

Published: 01 June 1994

PACS:	36.40.+d
	74.50.+r	(Tunneling phenomena; Josephson effects)
	78.55.-m	(Photoluminescence, properties and materials)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1994/V11/I6/0390

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