METHOD FOR BORON DIFFUSION IN SILICON PLATE Russian patent published in 2002 - IPC

Abstract RU 2183365 C1

FIELD: electronic engineering; manufacture of silicon devices. SUBSTANCE: method involves pre-treatment of boron nitride plates mounted in holder perpendicular to gas flow by dry oxygen, installation of silicon plates in holder in center of clearance between boron nitride plates followed by heat treatment of silicon plates in dry oxygen environment at temperature ranging between 840 and 900 C, change to neutral atmosphere, and one more heat treatment at 840-900 or 780-840 C. Oxygen and neutral gas are dried out by passing them through concentrated sulfuric acid; silicon plates are mounted in holder in dry atmosphere. EFFECT: enhanced degree of uniformity and surface resistance of boron-doped regions obtained in the process. 6 cl, 1 dwg, 2 tbl

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RU 2 183 365 C1

Authors

Dikovskij V.I.

Smirnova N.V.

Evstigneev D.A.

Dates

2002-06-10Published

2000-12-28Filed