Seh America, Inc.

Robert L Faulconer

Rosemary T Nettleton

Aaron W Johnson

A method of growing a crystalline ingot having a <110> orientation, such as a dislocation-free (&ldquo;DF&rdquo;) crystalline ingot, is provided. The method of manufacture includes providing a liquidous melt. Next, a seed crystal having a <110> crystal direction is contacted with the surface of the melt. The seed crystal is then withdrawn from the melt to thereby grow a neck. According to one embodiment, the seed elevation rate is automatically modified during the withdrawing step to reduce the diameter of the neck to greater than about 2.5 mm. Thereafter, the seed elevation rate is manually modified to alternate the diameter of the neck between about 2 mm and about 2.5 mm to thereby shape the neck into a recurring hourglass configuration. The neck is then withdrawn from the melt to grow a crystalline ingot having a <110> crystal direction and a diameter of at least about 200 mm.

Growing community of inventors

Brush Prairie, WA, United States of America

Robert L Faulconer