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ECN publication
Title:
Determination of facet orientations on alkaline etched multicrystallinewafers
 
Author(s):
Hylton, J.D.; Burgers, A.R.; Kinderman, R.; Sinke, W.C.
 
Published by: Publication date:
ECN 1996
 
ECN report number: Document type:
ECN-RX--96-020 Other
 
Number of pages: Full text:
6 Download PDF  

Abstract:
A method is presented by which the orientations of exposed etch facets,resulting from alkaline saw-damage and texture etching, can be determined. The method employs Laue photography, whereby reflected X-ray spots correspond with defined crystallographic planes, and localised light reflection or 'scatter recordings' of He-Ne light reflected preferentially from the faceted etch surface. It is shown that the combination of these two techniques can give the Miller indices corresponding to the surface normals to the etch facets. Angular information is hereby obtained such that the surface geometries of multi-crystalline silicon wafers are determined for the two etch types for crystals of different orientation. 5 figs., 9 refs.


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