Chin. Phys. Lett.  2004, Vol. 21 Issue (2): 403-405    DOI:
Original Articles |
An Experimental Analysis of Residual Stress Measurements in Porous Silicon Using Micro-Raman Spectroscopy
LEI Zhen-Kun1;KANG Yi-Lan1;HU Ming2;QIU Yu1;XU Han1;NIU Hong-Pan1
1Department of Mechanics, School of Mechanical Engineering, Tianjin University, Tianjin 300072 2Department of Electronic Science and Technology, School of Electronic Information Engineering, Tianjin University, Tianjin 300072
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LEI Zhen-Kun, KANG Yi-Lan, HU Ming et al  2004 Chin. Phys. Lett. 21 403-405
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Abstract Micro-Raman spectroscopy of porous silicon films of micrometers and on silicon bulk substrates is carried out. The practical information is given for applications of stress measurements in the films which were obtained with electrochemical etching technique. Higher residual stress (reached GPa) in the etched area falls continuously through the transitional area to the un-etched area of the sample. However, the stress gradient is smaller in the etched or un-etched area and increases in the transitional area between the two areas. Using atomic force microscopy to investigate surface appearance of porous silicon films, micro-cavity structure is expected to relate to the distribution of residual stress.


Keywords: 81.05.Rm      81.70.Fy      78.30.Am     
Published: 01 February 2004
PACS:  81.05.Rm (Porous materials; granular materials)  
  81.70.Fy (Nondestructive testing: optical methods)  
  78.30.Am (Elemental semiconductors and insulators)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I2/0403
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LEI Zhen-Kun
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