Reliable low resistance strap for trench storage DRAM cell using

Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate

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438246, 438388, 438389, H01L 218242

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active

059239719

ABSTRACT:
Strap resistance, surface strap shorts and wordline capacitance can be reduced by providing a selectively grown silicon strap which tapers away from spacer nitride and has less contact with spacer nitride. In addition the strap is optionally doped with an arsenic implant which reduces resistance.

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