公开(公告)号：US20160343609A1

公开(公告)日：2016-11-24

申请号：US15224987

申请日：2016-08-01

Applicant: INTEL CORPORATION

Inventor： Ritesh JHAVERI ,  Jeanne L. LUCE ,  Sang-Won PARK ,  Dennis G. HANKEN

IPC: H01L21/762 ,  H01L21/02

CPC classification number: H01L21/76224 ,  H01L21/02164 ,  H01L21/02219 ,  H01L21/02222 ,  H01L21/02274 ,  H01L21/02323 ,  H01L21/02326 ,  H01L21/02337 ,  H01L21/02343 ,  H01L21/02345 ,  H01L21/823431 ,  H01L27/0924 ,  H01L29/0649 ,  H01L29/66795 ,  H01L29/785

Abstract: Techniques are disclosed for providing trench isolation of semiconductive fins using flowable dielectric materials. In accordance with some embodiments, a flowable dielectric can be deposited over a fin-patterned semiconductive substrate, for example, using a flowable chemical vapor deposition (FCVD) process. The flowable dielectric may be flowed into the trenches between neighboring fins, where it can be cured in situ, thereby forming a dielectric layer over the substrate, in accordance with some embodiments. Through curing, the flowable dielectric can be converted, for example, to an oxide, a nitride, and/or a carbide, as desired for a given target application or end-use. In some embodiments, the resultant dielectric layer may be substantially defect-free, exhibiting no or an otherwise reduced quantity of seams/voids. After curing, the resultant dielectric layer can undergo wet chemical, thermal, and/or plasma treatment, for instance, to modify at least one of its dielectric properties, density, and/or etch rate.