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The impact of aluminum (Al) implantation into TiN/HfO2/ SiO2 on the effective work function is investigated. Al implanted through poly-Si cannot attain sufficient flatband voltage (VFB) shift unless at higher implantation energy. Al implanted through TiN at 1.2 keV with a dose of 5 × 1015 cm-2 raised the VFB to about 250 mV compared with a nonimplanted gate stack. Moreover, the VFB shift can be up...
We discuss several advancements over our previous report (S. Kubicek, 2006): - Introduction of conventional stress boosters resulting in 16% and 11% for nMOS and pMOS respectively. For the first time the compatibility of SMT (stress memorization technique) with high-kappa/metal gate is demonstrated. In addition, we developed a blanket SMT process that does not require a photo to protect the pMOS by...
A simple fabrication technique was developed to produce self-focused high frequency single element transducers with sputtered zinc oxide (ZnO) crystal films. The novelty of this technique lies in that the ZnO film can be sputtered directly onto a curved substrate. Two transducers were fabricated by sputtering an 18 mum thick ZnO layer on 2 and 3 mm diameter aluminum rods with ends shaped and polished...
In this work, lanthanum-incorporated refractory metal nitride is investigated as an n-type metal gate electrode with tunable work function. By adding La into HfN metal gate deposited on SiO2 gate dielectric, its gate work function can be tuned from 4.6 eV to 3.9 eV continuously by changing La composition. The authors also report the effective work function of TaN can be tuned to p-type with the incorporation...
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