Semiconductor device manufacturing: process – Radiation or energy treatment modifying properties of...
Reexamination Certificate
2011-03-15
2011-03-15
Landau, Matthew C (Department: 2813)
Semiconductor device manufacturing: process
Radiation or energy treatment modifying properties of...
C117S020000, C219S121600, C257SE21347
Reexamination Certificate
active
07906443
ABSTRACT:
A wafer processing method is provided that includes the steps of heating a silicon wafer containing oxygen and irradiating an infrared ray having a wavelength within a range of 7-25 μm on the silicon wafer, and controlling formation of oxygen precipitates within the silicon wafer by selectively setting a heating temperature for heating the silicon wafer and an irradiation intensity of the infrared ray.
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K. Sueoka, “Modeling of Internal Gettering of Nickel and Copper by Oxide Precipitates in Czochralski-Si Wafers”, Journal of Electrochemical Society, 152, pp. G 731-G 735 (2005).
K. Yasutake, M. Umeno, and H. Kawabe, “Mechanical properties of heat-treated Czochralski-grown silicon crystals”, Applied Physics Letters, 37, pp. 789-791(1980).
T. Abe and H. Yamada-Kaneta, “Annealing behavior of oxygen in-diffusion from Si O2film to silicon substrate”, Journal of Applied Physics, 96 (2004) pp. 4143-4149.
Kaneta Hiroshi
Tanahashi Katsuto
Fujitsu Limited
Fujitsu Patent Center
Landau Matthew C
Luke Daniel
LandOfFree
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