skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Control of excitons in multi-layer van der Waals heterostructures

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4943204· OSTI ID:1470317
 [1];  [1];  [1];  [1];  [2];  [2];  [2]
  1. Univ. of California at San Diego, La Jolla, CA (United States)
  2. Univ. of Manchester, Manchester (United Kingdom)

Here, we report an experimental study of excitons in a double quantum well van der Waals heterostructure made of atomically thin layers of MoS2 and hexagonal boron nitride. The emission of neutral and charged excitons is controlled by gate voltage, temperature, and both the helicity and the power of optical excitation. Van der Waals heterostructures composed of ultrathin layers of transition metal dichalcogenides (TMD), such as MoS2, WSe2, etc., offer an opportunity to realize artificial materials with designable properties, forming a new platform for studying basic phenomena and developing optoelectronic devices. In the TMD structures, excitons have high binding energies and are prominent in the optical response. The energy, intensity, and polarization of exciton emission give information about the electronic, spin, and valley properties of TMD materials.

Research Organization:
Univ. of California, San Diego, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-07ER46449
OSTI ID:
1470317
Alternate ID(s):
OSTI ID: 1240472
Journal Information:
Applied Physics Letters, Vol. 108, Issue 10; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 52 works
Citation information provided by
Web of Science

References (42)

Erratum: Optical Spectrum of MoS 2 : Many-Body Effects and Diversity of Exciton States [Phys. Rev. Lett. 111 , 216805 (2013)] journal September 2015
Low-temperature photocarrier dynamics in monolayer MoS2 text January 2011
Exciton Radiative Lifetimes in Two-Dimensional Transition Metal Dichalcogenides journal March 2015
Emerging Photoluminescence in Monolayer MoS2 journal April 2010
Strong interlayer coupling in van der Waals heterostructures built from single-layer chalcogenides journal April 2014
Spin and pseudospins in layered transition metal dichalcogenides journal April 2014
Probing Excitonic Dark States in Single-layer Tungsten Disulfide text January 2014
Dielectric enhancement of excitons in near-surface quantum wells journal July 1996
Electroluminescence and Photocurrent Generation from Atomically Sharp WSe 2 /MoS 2 Heterojunction p–n Diodes journal September 2014
Spontaneous coherence in a cold exciton gas journal March 2012
Theory of Neutral and Charged Excitons in Monolayer Transition Metal Dichalcogenides text January 2013
Optical Spectrum of MoS 2 : Many-Body Effects and Diversity of Exciton States journal November 2013
Absorption of light by excitons and trions in monolayers of metal dichalcogenide Mo S 2 : Experiments and theory journal May 2014
Probing excitonic dark states in single-layer tungsten disulphide journal August 2014
Atomically Thin MoS2 A New Direct-Gap Semiconductor journal September 2010
Low-temperature photocarrier dynamics in monolayer MoS 2 journal September 2011
Coulomb effects in spatially separated electron and hole layers in coupled quantum wells journal February 2001
Large excitonic effects in monolayers of molybdenum and tungsten dichalcogenides journal September 2012
Valley-selective circular dichroism of monolayer molybdenum disulphide journal January 2012
Electrical control of neutral and charged excitons in a monolayer semiconductor journal February 2013
Indirect excitons in coupled quantum well structures journal February 1992
Possibility of coherent light emission from Bose condensed states of SEHPs journal April 1990
Exciton spin dynamics in quantum wells journal June 1993
Spin-Orbit Coupling, Quantum Dots, and Qubits in Monolayer Transition Metal Dichalcogenides journal March 2014
Van der Waals heterostructures journal July 2013
Electrical tuning of valley magnetic moment through symmetry control in bilayer MoS2 journal January 2013
Direct and indirect magnetoexcitons in symmetric In x Ga 1 x As/GaAs coupled quantum wells journal October 1995
Electroluminescence and photocurrent generation from atomically sharp WSe2/MoS2 heterojunction p-n diodes text January 2014
High-temperature superfluidity with indirect excitons in van der Waals heterostructures journal July 2014
Spontaneous coherence in a cold exciton gas conference January 2012
Control of Exciton Fluxes in an Excitonic Integrated Circuit journal July 2008
High-temperature superfluidity with indirect excitons in van der Waals heterostructures text January 2014
Temperature effect on optical spectra of monolayer molybdenum disulfide journal May 2014
Tightly bound trions in monolayer MoS2 journal December 2012
Electroabsorption in GaAs/AlGaAs coupled quantum well waveguides journal April 1987
Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS 2 journal August 2014
Quasiparticle band structures and optical properties of strained monolayer MoS 2 and WS 2 journal April 2013
Control of valley polarization in monolayer MoS2 by optical helicity journal June 2012
Quasiparticle band structure calculation of monolayer, bilayer, and bulk MoS 2 journal May 2012
Temperature dependence of the energy gap in semiconductors journal January 1967
Valley polarization in MoS2 monolayers by optical pumping journal June 2012
Observation of long-lived interlayer excitons in monolayer MoSe2–WSe2 heterostructures journal February 2015

Cited By (24)

Distinct Photoluminescence in Multilayered van der Waals Heterostructures of MoS 2 /WS 2 /ReS 2 and BN journal April 2018
Resonant Photon Drag of Dipolar Excitons journal June 2018
Indirect excitons in van der Waals heterostructures at room temperature conference January 2018
Distinctive optoelectronic properties of nanostructured MoS 2 bilayers journal August 2019
Recent progress in van der Waals heterojunctions journal January 2017
Excitonic Stark effect in MoS 2 monolayers journal December 2016
Rich diversity of crystallographic phase formation in 2D Re x Mo 1 –  x S 2 ( x  < 0.5) alloy journal December 2019
Superfluidity of dipolar excitons in a transition metal dichalcogenide double layer journal September 2017
Interlayer valley excitons in heterobilayers of transition metal dichalcogenides journal August 2018
Photo-detecting of graphene/insulator/silicon heterojunction with direct tunneling mechanism journal December 2019
Quantum anomalous valley Hall effect for bosons journal September 2019
Experimental evidences of quantum confined 2D indirect excitons in single barrier GaAs/AlAs/GaAs heterostructure using photocapacitance at room temperature journal January 2018
Probing interlayer excitons in a vertical van der Waals p-n junction using a scanning probe microscopy technique journal January 2019
Exciton-exciton interaction in transition-metal dichalcogenide monolayers journal September 2017
Optical absorption by indirect excitons in a transition metal dichalcogenide/hexagonal boron nitride heterostructure journal May 2018
Complexes of dipolar excitons in layered quasi-two-dimensional nanostructures journal April 2018
Indirect excitons in van der Waals heterostructures at room temperature text January 2017
Hot carrier-enhanced interlayer electron–hole pair multiplication in 2D semiconductor heterostructure photocells journal October 2017
Few-body systems in condensed matter physics text January 2019
Indirect excitons in van der Waals heterostructures at room temperature journal May 2018
Electronic and optical excitations of two-dimensional ZrS 2 and HfS 2 and their heterostructure journal July 2019
Dirac Cones in Graphene, Interlayer Interaction in Layered Materials, and the Band Gap in MoS2 journal November 2016
Few-Body Systems in Condensed Matter Physics journal July 2019
Complexes of dipolar excitons in layered quasi-two-dimensional nanostructures text January 2017

Similar Records

Voltage-controlled long-range propagation of indirect excitons in a van der Waals heterostructure
Journal Article · Fri Oct 08 00:00:00 EDT 2021 · Physical Review. B · OSTI ID:1470317

Indirect excitons in van der Waals heterostructures at room temperature
Journal Article · Mon May 14 00:00:00 EDT 2018 · Nature Communications · OSTI ID:1470317

Moiré potential impedes interlayer exciton diffusion in van der Waals heterostructures
Journal Article · Fri Sep 25 00:00:00 EDT 2020 · Science Advances · OSTI ID:1470317