Agere Systems Inc.

Agere Systems Guardian Corp.

Felix Llevada

Seungmoo Choi

Scott Francis Shive

Donald Thomas Cwynar

Timothy Edward Doyle

Amal Ma Hamad

Vivek Saxena

Paul Yih

A halo implant ( ) for an MOS transistor ( ) is formed in a semiconductor substrate ( ) at a shallow implant angle, relative to normal to the substrate surface ( ). A polysilicon gate structure ( ) is formed over a gate oxide ( ) and then a hard mask ( ), such as a TEOS-generated layer of silicon oxide, is deposited on an upper surface ( ) of the gate. The mask is etched with a blanket anisotropic etch to form a cap-shaped mask ( ). The shape of the cap causes the dopant for the halo implant to penetrate to a depth which follows the contour of the cap. Thus, halo implants may be formed which extend under the gate structure without the need for large angle implants and resultant shadowing problems caused by adjacent devices.

Method for fabricating MOS device with halo implanted region

The present invention provides a method of manufacturing a resistor for use in a memory element and a semiconductor device employing the resistor. The method of manufacturing may comprise forming a dielectric layer over an active region of a semiconductor wafer and forming a resistive layer on the dielectric layer. The resistive layer comprises a compound wherein a first element of the compound is a Group III or Group IV element and a second element of the compound is a Group IV or Group V element. The method further comprises connecting an electrical interconnect structure to the resistive layer that electrically connects the resistive layer to the active region.

High resistivity film for 4T SRAM

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Orlando, FL, United States of America

Felix Llevada