Impact of the pre amorphization by Ge implantation on Ni$_{0.9}$Pt$_{0.1}$ silicide - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Microelectronic Engineering Année : 2022

Impact of the pre amorphization by Ge implantation on Ni$_{0.9}$Pt$_{0.1}$ silicide

Résumé

The impact of the Pre Amorphization by Ge Implantation (PAI) on Ni0.9Pt0.1 silicide is studied. Reactions between a 10 nm thick Ni0.9Pt0.1 film and Si (100) substrate are analyzed as a function of the induced amorphous-Si thicknesses. In view of being compatible with the integration constraint of the 28 nm CMOS technologies, the Ge implantation dose is fixed at a low level. The relative position of the amorphous-Si/crystalline-Si interface and the silicide growth front is defined for each sample. Then, in-situ XRD analyses, X-Ray Reflectometry (XRR) and Sheet resistance (Rs) measurements are achieved to provide a deep study of silicide growth kinetics and silicide properties. First, a clear relationship is established between the silicide growth rate and the amorphous-Si thickness. Secondly, an easier NiSi nucleation and a decrease of its resistivity is observed when NiSi nucleates at the θ-Ni2Si/a-Si interface. These observations are discussed considering the impact of the amorphous-Si layer on the driving force, the nucleation barrier, the lateral growth rate, and NiSi roughness.

Domaines

Matériaux
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jeudi 21 novembre 2024
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jeudi 21 novembre 2024
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Dates et versions

hal-03863804 , version 1 (21-11-2022)

Identifiants

Citer

C. Delwail, S. Joblot, F. Mazen, F. Abbate, L. Lachal, et al.. Impact of the pre amorphization by Ge implantation on Ni$_{0.9}$Pt$_{0.1}$ silicide. Microelectronic Engineering, 2022, 254, pp.111705. ⟨10.1016/j.mee.2021.111705⟩. ⟨hal-03863804⟩
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