Paper Title:
Infrared Absorption Measurement of Carbon Concentration down to 1x1014/cm3 in CZ Silicon
  Abstract

Measurement of carbon concentration in CZ silicon by infrared absorption spectroscopy was examined. Noise level was suppressed down to 10-4 in unit of absorbance. Residual differential absorption between the sample and reference was removed by fitting the phonon absorption spectrum to the background absorption spectrum. The effect of narrowing of absorption spectral range was examined. As a result, it was possible to measure the differential carbon concentration down to about 1×1014/cm3. Measurement of commercial wafer was also established.

  Info
Periodical
Solid State Phenomena (Volumes 108-109)
Edited by
B. Pichaud, A. Claverie, D. Alquier, H. Richter and M. Kittler
Pages
621-626
DOI
10.4028/www.scientific.net/SSP.108-109.621
Citation
N. Inoue, M. Nakatsu, "Infrared Absorption Measurement of Carbon Concentration down to 1x1014/cm3 in CZ Silicon", Solid State Phenomena, Vols. 108-109, pp. 621-626, 2005
Online since
December 2005
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