METHOD OF FORMING VERTICAL CHANNEL DEVICES
First Claim
1. A method of forming vertical channel devices, the method comprising:
- providing a substrate and forming thereon a plurality of vertical channel structures;
surrounding each of the vertical channel structures with respective wrap-around gates;
forming enlarged top portions by selectively growing a doped semiconductor material on respective top portions of at least a subset of the vertical channel structures; and
forming a top electrode on each of the enlarged top portions.
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Abstract
The disclosed technology generally relates to semiconductor fabrication and more particularly to a method of forming vertical channel devices. In one aspect, a method of forming vertical channel devices includes providing a semiconductor structure that includes a substrate and a plurality of vertical channel structures. The method additionally includes surrounding the vertical channel structures with respective wrap-around gates. The method additionally includes forming enlarged top portions by selectively growing a doped semiconductor material on respective top portions of at least a subset of the vertical channel structures. The method further includes forming a top electrode on each of the enlarged top portions.
11 Citations
15 Claims
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1. A method of forming vertical channel devices, the method comprising:
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providing a substrate and forming thereon a plurality of vertical channel structures; surrounding each of the vertical channel structures with respective wrap-around gates; forming enlarged top portions by selectively growing a doped semiconductor material on respective top portions of at least a subset of the vertical channel structures; and forming a top electrode on each of the enlarged top portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification