Method for forming a layer on a substrate at low temperatures

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United States of America Patent

PATENT NO 9252011
APP PUB NO 20140179117A1
SERIAL NO

14131943

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Abstract

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A method for forming an oxide layer on a substrate is described, wherein a plasma is generated adjacent to at least one surface of the substrate by means of microwaves from a gas containing oxygen, wherein the microwaves are coupled into the gas by a magnetron via at least one microwave rod, which is arranged opposite to the substrate and comprises an outer conductor and an inner conductor. During the formation of the oxide layer, the mean microwave power density is set to P=0.8-10 W/cm2, the plasma duration is set to t=0.1 to 600 s, the pressure is set to p=2.67-266.64 Pa (20 to 2000 mTorr) and a distance between substrate surface and microwave rod is set to d=5-120 mm. The above and potentially further process conditions are matched to each other such that the substrate is held at a temperature below 200° C. and an oxide growth is induced on the surface of the substrate facing the plasma.

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Patent Owner(s)

Patent OwnerAddress
CENTROTHERM PHOTOVOLTAICS AGFORD STREET FORD GERMANY 31 (ZIP CODE 89143) BLAUBEUREN BADEN-WURTTEMBERG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gschwandtner, Alexander Munich, DE 19 761
Kegel, Wilhelm Laichingen, DE 9 188
Lerch, Wilfried Dornstadt, DE 20 161
Niess, Juergen Sontheim, DE 2 8

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