Bright and Efficient Light‐Emitting Devices Based on 2D Transition Metal Dichalcogenides

T Ahmed, J Zha, KKH Lin, HC Kuo, C Tan… - Advanced …, 2023 - Wiley Online Library
Abstract 2D monolayer transition metal dichalcogenides (TMDCs) show great promise for
the development of next‐generation light‐emitting devices owing to their unique electronic …

Anomalous thickness dependence of photoluminescence quantum yield in black phosphorous

N Higashitarumizu, SZ Uddin, D Weinberg… - Nature …, 2023 - nature.com
Black phosphorus has emerged as a unique optoelectronic material, exhibiting tunable and
high device performance from mid-infrared to visible wavelengths. Understanding the …

Bidirectional phonon emission in two-dimensional heterostructures triggered by ultrafast charge transfer

A Sood, JB Haber, J Carlström, EA Peterson… - Nature …, 2023 - nature.com
Photoinduced charge transfer in van der Waals heterostructures occurs on the 100 fs
timescale despite weak interlayer coupling and momentum mismatch. However, little is …

Inhibited nonradiative decay at all exciton densities in monolayer semiconductors

H Kim, SZ Uddin, N Higashitarumizu, E Rabani… - Science, 2021 - science.org
Most optoelectronic devices operate at high photocarrier densities, where all
semiconductors suffer from enhanced nonradiative recombination. Nonradiative processes …

Ultrafast Spontaneous Localization of a Jahn-Teller Exciton Polaron in Two-Dimensional Semiconducting CrI3 by Symmetry Breaking

X Li, A Wang, H Chen, W Tao, Z Chen, C Zhang… - Nano Letters, 2022 - ACS Publications
The excited state species and properties in low-dimensional semiconductors can be
completely redefined by electron-lattice coupling or a polaronic effect. Here, by combining …

Enhanced Radiative Exciton Recombination in Monolayer WS2 on the hBN Substrate Competing with Nonradiative Exciton–Exciton Annihilation

Y Lee, TT Tran, Y Kim, S Roy, T Taniguchi… - ACS …, 2022 - ACS Publications
The photoluminescence quantum yield (PLQY) is a critical factor of monolayer transition
metal dichalcogenides (1L-TMDs) for optoelectronic applications. However, the PLQY of 1L …

Enhanced Neutral Exciton Diffusion in Monolayer WS2 by Exciton–Exciton Annihilation

SZ Uddin, N Higashitarumizu, H Kim, J Yi, X Zhang… - ACS …, 2022 - ACS Publications
Dominant recombination pathways in monolayer transition metal dichalcogenides (TMDCs)
depend primarily on background carrier concentration, generation rate, and applied strain …

Tunable band gaps and optical absorption properties of bent MoS2 nanoribbons

H Tang, B Neupane, S Neupane, S Ruan, NK Nepal… - Scientific Reports, 2022 - nature.com
The large tunability of band gaps and optical absorptions of armchair MoS2 nanoribbons of
different widths under bending is studied using density functional theory and many-body …

Engineering Exciton Recombination Pathways in Bilayer WSe2 for Bright Luminescence

SZ Uddin, N Higashitarumizu, H Kim, E Rabani… - ACS …, 2022 - ACS Publications
Exciton–exciton annihilation (EEA) in counterdoped monolayer transition metal
dichalcogenides (TMDCs) can be suppressed by favorably changing the band structure with …

Ultralow Auger-Assisted Interlayer Exciton Annihilation in WS2/WSe2 Moiré Heterobilayers

CS Cai, WY Lai, PH Liu, TC Chou, RY Liu, CM Lin… - Nano Letters, 2024 - ACS Publications
Transition metal dichalcogenide (TMD) heterobilayers have emerged as a promising
platform for exploring solid-state quantum simulators and many-body quantum phenomena …