Publications de Hokwon Kim | EPFL Graph Search

Wafer-scale MOCVD growth of monolayer MoS2 on sapphire and SiO2

Aleksandra Radenovic, Andras Kis, Thomas La Grange, Ke Liu, Michal Daniel Macha, Yanfei Zhao, Hokwon Kim, Huanyao Cun

High-quality and large-scale growth of monolayer molybdenum disulfide (MoS2) has caught intensive attention because of its potential in many applications due to unique electronic properties. Here, we report the wafer-scale growth of high-quality monolayer ...

2019

Large-grain MBE-grown GaSe on GaAs with a Mexican hat-like valence band dispersion

Andras Kis, Ming-Wei Chen, Olivier Renault, Dmitry Ovchinnikov, Hokwon Kim

2018

Electronic Properties of Transferable Atomically Thin MoSe2/h-BN Heterostructures Grown on Rh(111)

Andras Kis, Ming-Wei Chen, Oleg Yazyev, Olivier Renault, Michele Pizzochero, Hokwon Kim

2018

Suppressing Nucleation in Metal–Organic Chemical Vapor Deposition of MoS2

Andras Kis, Dmitry Ovchinnikov, Dmitrii Unuchek, Hokwon Kim, Davide Deiana

Toward the large-area deposition of MoS2 layers, we employ metal–organic precursors of Mo and S for a facile and reproducible van der Waals epitaxy on c-plane sapphire. Exposing c-sapphire substrates to alkali metal halide salts such as KI or NaCl together ...

American Chemical Society (ACS)2017

Free-standing electronic character of monolayer

Andras Kis, Dumitru Dumcenco, Olivier Renault, Yen-Cheng Kung, Ming-Wei Chen, Hokwon Kim

We have evaluated as-grown MoS2 crystals, epitaxially grown on a monocrystalline sapphire by chemical vapor deposition (CVD), with direct electronic band-structure measurements by energy-filtered k-space photoelectron emission microscopy performed with a c ...

Amer Physical Soc2016

Doping characteristics of iodine on as-grown chemical vapor deposited graphene on Pt

Olivier Renault, Hokwon Kim, Nicolas Chevalier

Using laboratory X-ray photoelectron emission microscopy (XPEEM), we investigated the doping efficiency and thermal stability of iodine on as-grown graphene on Pt. After iodine adsorption of graphene in saturated vapor of I-2, monolayer and bilayer graphen ...

Elsevier Science Bv2015