Taiwan Semiconductor Manufacturing Comp. Ltd.

Wei-Fan Lee

Wen-Hsien Tu

Chee-Wee Liu

Chin-Kun Wang

Yuh-Ta Fan

Yen Chuang

Chih-Hsiung Huang

Yuan-feng Chao

Tzu-Yao Lin

The present disclosure is directed to source/drain (S/D) epitaxial structures with enlarged top surfaces. In some embodiments, the S/D epitaxial structures include a first crystalline epitaxial layer comprising facets; a non-crystalline epitaxial layer on the first crystalline layer; and a second crystalline epitaxial layer on the non-crystalline epitaxial layer, where the second crystalline epitaxial layer is substantially facet-free.

Semiconductor structure having a source/drain epitaxial stack with a non-crystalline layer therein

A semiconductor device includes a fin structure protruding from a first isolation insulating layer provided over a substrate, a gate dielectric layer disposed over a channel region of the fin structure, a gate electrode layer disposed over the gate dielectric layer, a base semiconductor epitaxial layer disposed over a source/drain region of the fin structure, and a cap semiconductor epitaxial layer disposed over the base semiconductor epitaxial layer. The cap semiconductor epitaxial layer has a different lattice constant than the base semiconductor epitaxial layer, and a surface roughness of the cap semiconductor epitaxial layer along a source-to-drain direction is greater than zero and smaller than a surface roughness of the base semiconductor epitaxial layer along the source-to-drain direction.

Method of manufacturing a semiconductor device and a semiconductor device

Method of manufacturing a facet-free source/drain epitaxial structure having an amorphous or polycrystalline layer

One or more semiconductor arrangements are provided. The semiconductor arrangements include a buried layer over a well, a dielectric layer over the buried layer, a first gate stack over the dielectric layer and a S/D region disposed proximate the first gate stack. The S/D region has a first tip proximity region that extends under the first gate stack. One or more methods of forming a semiconductor arrangement are also provided. The methods include forming a S/D recess in at least one of a dielectric layer, a buried layer or a well, wherein the S/D recess is proximate a first gate stack and has a first recess tip proximity region that extends under the first gate stack as a function of the buried layer, and forming a S/D region in the S/D recess such that the S/D region has a first tip proximity region that extends under the first gate stack.

Semiconductor arrangement with stress control and method of making

A semiconductor structure and a method for forming the same are provided. The semiconductor structure includes a substrate and an interfacial layer formed over the substrate. The semiconductor structure further includes a gate structure formed over the interfacial layer. In addition, the interfacial layer is made of metal germanium oxide, metal silicon oxide, or metal germanium silicon oxide and is in direct contact with a top surface of the substrate.

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Hsinchu, Taiwan

Wei-Fan Lee