X-Ray Rocking Curve Characterization of SiC Substrates

Abstract:

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X-ray rocking curve characterization is a relatively fast and nondestructive technique that can be utilized to evaluate the crystal quality of SiC substrates. The contribution of lattice curvature to rocking curve broadening is estimated, and shown to be the major contribution to the measured broadening (FWHM). The feedback on lattice quality is used to optimize our SiC growth process. In the optimized growth runs, the typical variation in rocking curve sample angle Ω across the entire 3” diameter wafer is about 0.2 degrees. Possible mechanisms leading to changes in the lattice curvature are discussed.

Info:

Periodical:

Materials Science Forum (Volumes 600-603)

Edited by:

Akira Suzuki, Hajime Okumura, Tsunenobu Kimoto, Takashi Fuyuki, Kenji Fukuda and Shin-ichi Nishizawa

Pages:

361-364

DOI:

10.4028/www.scientific.net/MSF.600-603.361

Citation:

M. Yoganathan et al., "X-Ray Rocking Curve Characterization of SiC Substrates", Materials Science Forum, Vols. 600-603, pp. 361-364, 2009

Online since:

September 2008

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Price:

$35.00

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