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Title: Reduced Dielectric Screening and Enhanced Energy Transfer in Single- and Few-Layer MoS2

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl5019386· OSTI ID:1387548
 [1];  [1];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We report here highly efficient nonradiative energy transfer from cadmium selenide (CdSe) quantum dots to monolayer and few-layer molybdenum disulfide (MoS2). The quenching of the donor quantum dot photoluminescence increases as the MoS2 flake thickness decreases with the highest efficiency (>95%) observed for monolayer MoS2. This counterintuitive result arises from reduced dielectric screening in thin layer semiconductors having unusually large permittivity and a strong in-plane transition dipole moment, as found in MoS2. Excitonic energy transfer between a zero-dimensional emitter and a two-dimensional absorber is fundamentally interesting and enables a wide range of applications including broadband optical down-conversion, optical detection, photovoltaic sensitization, and color shifting in light-emitting devices.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001088
OSTI ID:
1387548
Journal Information:
Nano Letters, Vol. 14, Issue 11; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 162 works
Citation information provided by
Web of Science

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Neutral and defect-induced exciton annihilation in defective monolayer WS 2 journal January 2019
CVD grown 2D MoS 2 layers: A photoluminescence and fluorescence lifetime imaging study journal September 2016
Interface Characterization and Control of 2D Materials and Heterostructures journal July 2018
In situ growth of all-inorganic perovskite nanocrystals on black phosphorus nanosheets journal January 2018
Highly mobile charge-transfer excitons in two-dimensional WS 2 /tetracene heterostructures journal January 2018
Distinct Optoelectronic Signatures for Charge Transfer and Energy Transfer in Quantum Dot-MoS 2 Hybrid Photodetectors Revealed by Photocurrent Imaging Microscopy journal May 2018
Near‐Field Energy Transfer between a Luminescent 2D Material and Color Centers in Diamond journal October 2019
In situ manipulation of fluorescence resonance energy transfer between quantum dots and monolayer graphene oxide by laser irradiation journal January 2019
Temperature-dependent Crystallization of MoS2 Nanoflakes on Graphene Nanosheets for Electrocatalysis journal August 2017
High-performance flexible and broadband photodetectors based on PbS quantum dots/ZnO nanoparticles heterostructure journal June 2018
Near-field relaxation of a quantum emitter to two-dimensional semiconductors: Surface dissipation and exciton polaritons journal November 2016
Graphene Quantum Dots Doping of MoS 2 Monolayers journal August 2015
Fluorescent Block Copolymer-MoS 2 Nanocomposites for Real-Time Photothermal Heating and Imaging journal December 2016
Interfacial Charge Behavior Modulation in Perovskite Quantum Dot-Monolayer MoS 2 0D-2D Mixed-Dimensional van der Waals Heterostructures journal June 2018
The Interaction between Quantum Dots and Graphene: The Applications in Graphene‐Based Solar Cells and Photodetectors journal September 2018
Recent advances in energy transfer in bulk and nanoscale luminescent materials: from spectroscopy to applications journal January 2015
Bilayer MoS 2 quantum dots with tunable magnetism and spin journal November 2018
0D-2D and 1D-2D Semiconductor Hybrids Composed of All Inorganic Perovskite Nanocrystals and Single-Layer Graphene with Improved Light Harvesting journal December 2017
Spectral focusing of broadband silver electroluminescence in nanoscopic FRET-LEDs journal April 2017
Observation of charge transfer in mixed-dimensional heterostructures formed by transition metal dichalcogenide monolayers and PbS quantum dots journal December 2019
Ultrafast charge transfer in MoS 2 /WSe 2 p–n Heterojunction journal May 2016
Near-Field Energy Transfer Using Nanoemitters For Optoelectronics journal October 2016
Light Emission Properties of 2D Transition Metal Dichalcogenides: Fundamentals and Applications journal August 2018
Strong interaction of quantum emitters with a WS 2 layer enhanced by a gold substrate journal January 2019
Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS 2 Nanosheets journal February 2018
Controllable Interlayer Charge and Energy Transfer in Perovskite Quantum Dots/ Transition Metal Dichalcogenide Heterostructures journal September 2019
Performance-Enhancing Broadband and Flexible Photodetectors Based on Perovskite/ZnO-Nanowire Hybrid Structures journal May 2017
Spectral focusing of broadband silver electroluminescence in nanoscopic FRET-LEDs text January 2017
Exciton broadening in WS2 /graphene heterostructures text January 2017
Near‐Field Energy Transfer between a Luminescent 2D Material and Color Centers in Diamond collection January 2019
Spectral focusing of broadband silver electroluminescence in nanoscopic FRET-LEDs text January 2017