Related Experiment Video
Updated: Jan 26, 2026

Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers
Published on: February 8, 2022
Quantitative analysis of trace bulk oxygen in silicon wafers using an inert gas fusion method
Hiroshi Uchihara1, Masahiko Ikeda, Taketoshi Nakahara
1HORIBA Application Center; 2 Miyanohigashi, Kisshoin, Minami-ku, Kyoto 601-8510, Japan.
Abstract:
This paper describes a method for removing oxide film from the surface of silicon wafers using an inert gas fusion impulse furnace and precise determination of bulk oxygen within the wafer. A silicon wafer was cut to about 0.35 g (6 x 13 x 2 mm) and dropped into a graphite crucible. The sample was then heated for 40 s at 1300 degrees C. The wafer's oxide film was reduced by carbon and removed as carbon monoxide. The treated silicon sample was taken out of the graphite crucible and maintained again with the holder of the oxygen analyzer. The graphite crucible was then heated to 2100 degrees C. The treated silicon sample was dropped into the heated graphite crucible and the trace bulk oxygen in the wafer was measured using the inert gas fusion infrared absorption method. The relative standard deviations of the oxygen in silicon wafer samples with the removed surface oxide film were determined to be 0.8% for 9.8 x 10(17) atoms/cm3, and 2.7% for 13.0 x 10(17) atoms/cm3.
Related Concept Videos
Nuclear Fusion
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
Gas Exchange and Transport
Quantitative Analysis
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
Bulk Modulus
Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules
Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

