Characterizing stress in ultrathin silicon wafers
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Date
2006
Authors
Paul, Indrajit
Majeed, Bivragh
Razeeb, Kafil M.
Barton, John
Journal Title
Journal ISSN
Volume Title
Publisher
AIP Publishing
Published Version
Abstract
The aim of this letter is to calculate the mechanical grinding induced bow and stress in ultrathin silicon wafers. The reverse leakage current of a p-n junction diode fabricated on a 4 in. silicon wafer was measured for wafers thinned to various thicknesses. A correlation with the residual stress was obtained through band gap narrowing effect. The analytical results were compared with experimental bow measurements using a laser profiler. The bow in 50 mu m thick wafer was found to be less than 2 mm using the current grinding process. (c) 2006 American Institute of Physics. (DOI:10.1063/1.2336212)
Description
Keywords
Silicon , Band gap , Leakage currents , Valence bands , Hydrostatics
Citation
Paul, I., Majeed, B., Razeeb, K. M. and Barton, J. (2006) 'Characterizing stress in ultrathin silicon wafers', Applied Physics Letters, 89(7), pp. 073506. doi: 10.1063/1.2336212
Copyright
© 2006 American Institute of Physics.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Paul, I., Majeed, B., Razeeb, K. M. and Barton, J. (2006) 'Characterizing stress in ultrathin silicon wafers', Applied Physics Letters, 89(7), pp. 073506 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.2336212