[HTML][HTML] Bandgap engineering of two-dimensional semiconductor materials

A Chaves, JG Azadani, H Alsalman… - npj 2D Materials and …, 2020 - nature.com
Semiconductors are the basis of many vital technologies such as electronics, computing,
communications, optoelectronics, and sensing. Modern semiconductor technology can trace …

Thickness dependence of work function, ionization energy, and electron affinity of Mo and W dichalcogenides from DFT and GW calculations

H Kim, HJ Choi - Physical review B, 2021 - APS
Transition-metal dichalcogenides (TMDs) are promising for two-dimensional (2D)
semiconducting devices and novel phenomena. For 2D applications, their work function …

[HTML][HTML] Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides

S Barja, S Refaely-Abramson, B Schuler, DY Qiu… - Nature …, 2019 - nature.com
Chalcogen vacancies are generally considered to be the most common point defects in
transition metal dichalcogenide (TMD) semiconductors because of their low formation …

Large Spin-Orbit Splitting of Deep In-Gap Defect States of Engineered Sulfur Vacancies in Monolayer

B Schuler, DY Qiu, S Refaely-Abramson, C Kastl… - Physical review …, 2019 - APS
Structural defects in 2D materials offer an effective way to engineer new material
functionalities beyond conventional doping. We report on the direct experimental correlation …

Rational passivation of sulfur vacancy defects in two-dimensional transition metal dichalcogenides

H Bretscher, Z Li, J Xiao, DY Qiu… - ACS …, 2021 - ACS Publications
Structural defects vary the optoelectronic properties of monolayer transition metal
dichalcogenides, leading to concerted efforts to control defect type and density via materials …

How Substitutional Point Defects in Two-Dimensional WS2 Induce Charge Localization, Spin–Orbit Splitting, and Strain

B Schuler, JH Lee, C Kastl, KA Cochrane, CT Chen… - ACS …, 2019 - ACS Publications
Control of impurity concentrations in semiconducting materials is essential to device
technology. Because of their intrinsic confinement, the properties of two-dimensional …

Defect-induced modification of low-lying excitons and valley selectivity in monolayer transition metal dichalcogenides

S Refaely-Abramson, DY Qiu, SG Louie, JB Neaton - Physical review letters, 2018 - APS
We study the effect of point-defect chalcogen vacancies on the optical properties of
monolayer transition metal dichalcogenides using ab initio GW and Bethe-Salpeter equation …

Kolmogorov–Crespi potential for multilayer transition-metal dichalcogenides: capturing structural transformations in moiré superlattices

MH Naik, I Maity, PK Maiti, M Jain - The Journal of Physical …, 2019 - ACS Publications
We develop parameters for the interlayer Kolmogorov–Crespi (KC) potential to study
structural features of four transition-metal dichalcogenides (TMDs): MoS2, WS2, MoSe2, and …

Real-Time GW-Ehrenfest-Fan-Migdal Method for Nonequilibrium 2D Materials

E Perfetto, G Stefanucci - Nano Letters, 2023 - ACS Publications
Quantum simulations of photoexcited low-dimensional systems are pivotal for understanding
how to functionalize and integrate novel two-dimensional (2D) materials in next-generation …

Minimal molecular building blocks for screening in quasi-two-dimensional organic–inorganic lead halide perovskites

J McArthur, MR Filip, DY Qiu - Nano Letters, 2023 - ACS Publications
Layered hybrid organic–inorganic lead halide perovskites have intriguing optoelectronic
properties, but some of the most interesting perovskite systems, such as defective …