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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YANG Xinju
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