High-K materials and metal gates for CMOS applications

J Robertson, RM Wallace - Materials Science and Engineering: R: Reports, 2015 - Elsevier
The scaling of complementary metal oxide semiconductor (CMOS) transistors has led to the
silicon dioxide layer used as a gate dielectric becoming so thin that the gate leakage current …

ZnO Schottky barriers and Ohmic contacts

LJ Brillson, Y Lu - Journal of Applied Physics, 2011 - pubs.aip.org
ZnO has emerged as a promising candidate for optoelectronic and microelectronic
applications, whose development requires greater understanding and control of their …

Structural Polymorphism Kinetics Promoted by Charged Oxygen Vacancies in

LY Ma, S Liu - Physical Review Letters, 2023 - APS
Defects such as oxygen vacancy are widely considered to be critical for the performance of
ferroelectric HfO 2-based devices, and yet atomistic mechanisms underlying various exotic …

Development of hafnium based high-k materials—A review

JH Choi, Y Mao, JP Chang - Materials Science and Engineering: R: Reports, 2011 - Elsevier
The move to implement metal oxide based gate dielectrics in a metal-oxide-semiconductor
field effect transistor is considered one of the most dramatic advances in materials science …

Defects in ferroelectric HfO 2

A Chouprik, D Negrov, EY Tsymbal, A Zenkevich - Nanoscale, 2021 - pubs.rsc.org
The discovery of ferroelectricity in polycrystalline thin films of doped HfO2 has reignited the
expectations of develo** competitive ferroelectric non-volatile memory devices. To date, it …

Band offsets, Schottky barrier heights, and their effects on electronic devices

J Robertson - Journal of Vacuum Science & Technology A, 2013 - pubs.aip.org
The authors review the band line-ups and band offsets between semiconductors, dielectrics,
and metals, including the theory, experimental data, and the chemical trends. Band offsets …

Limits to do** in oxides

J Robertson, SJ Clark - Physical Review B—Condensed Matter and Materials …, 2011 - APS
The chemical trends of limits to do** of many semiconducting metal oxides is analyzed in
terms of the formation energies needed to form the compensating defects. The n-type oxides …

In-situ X-ray photoelectron spectroscopy study of catalyst− support interactions and growth of carbon nanotube forests

C Mattevi, CT Wirth, S Hofmann, R Blume… - The Journal of …, 2008 - ACS Publications
We study catalyst support interactions during chemical vapor deposition of carbon
nanotubes by in situ X-ray photoelectron spectroscopy over a wide range of pressures. We …

Influence of oxygen vacancies on Schottky contacts to ZnO

MW Allen, SM Durbin - Applied Physics Letters, 2008 - pubs.aip.org
Ni, Ir, Pd, Pt, and silver oxide Schottky contacts were fabricated on the Zn-polar face of
hydrothermally grown, bulk ZnO. A relationship was found between the barrier height of the …

Materials selection for oxide-based resistive random access memories

Y Guo, J Robertson - Applied Physics Letters, 2014 - pubs.aip.org
The energies of atomic processes in resistive random access memories (RRAMs) are
calculated for four typical oxides, HfO 2, TiO 2, Ta 2 O 5, and Al 2 O 3, to define a materials …