Etching of transition metal dichalcogenide monolayers into nanoribbon arrays

Wang, Zixing; Zhang, Xiang; Hachtel, Jordan A.; Apte, Amey; Tiwary, Chandra S.; Vajtai, Robert; Idrobo, Juan Carlos; Ozturk, Ramazan; Ajayan, Pulickel

doi:10.1039/C8NH00364E

Title: Etching of transition metal dichalcogenide monolayers into nanoribbon arrays

Abstract

Two-dimensional transition metal dichalcogenide (TMDC) nanoribbons are reported to exhibit interesting properties distinctly different from their 2D analogues, including a change of transport properties depending on the edge structure, enhanced exciton correlation effect and thermoelectric property. In this work we report a successful preparation method for large arrays of 2D TMDC nanoribbons without a template, using a reducing agent aqueous etchant. This approach is a simple and tuneable way for generating TMDC (e.g. MoS₂ and MoSe₂) nanoribbons from CVD grown 2D TMDCs on Si/SiO₂ through liquid phase mechano-chemical reaction. The reducing agent converts Mo(IV) from the defect sites to a lower oxidation state, thus expanding the defects. Water acts as a detaching and tearing medium that pulls the TMDC flake into nanoribbons. The area of conversion, density, and aspect ratio of the nanoribbons can be tuned by concentration and potency of the etchant. The 2D nanoribbons possess high structural integrity, zigzag edges with chalcogen termination, and an increase of bandgap when ribbon width decreases. This method allows a scalable approach for 2D nanoribbons to be prepared for various applications.

Authors:

^[1]; Zhang, Xiang ^[1];

^[2];

^[1]; Tiwary, Chandra S. ^[1];

^[3];

^[2];

^[1];

^[1]

Rice Univ., Houston, TX (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Rice Univ., Houston, TX (United States); Univ. of Szeged, Szeged (Hungary)

Publication Date:: Fri Jan 18 00:00:00 EST 2019

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; US Air Force Office of Scientific Research (AFOSR)

OSTI Identifier:: 1524868

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Nanoscale Horizons

Additional Journal Information:: Journal Volume: 4; Journal Issue: 3; Journal ID: ISSN 2055-6756

Publisher:: Royal Society of Chemistry

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats


                    Wang, Zixing, Zhang, Xiang, Hachtel, Jordan A., Apte, Amey, Tiwary, Chandra S., Vajtai, Robert, Idrobo, Juan Carlos, Ozturk, Ramazan, and Ajayan, Pulickel. Etching of transition metal dichalcogenide monolayers into nanoribbon arrays.  United States: N. p., 2019. 
Web.  doi:10.1039/C8NH00364E.

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                    Wang, Zixing, Zhang, Xiang, Hachtel, Jordan A., Apte, Amey, Tiwary, Chandra S., Vajtai, Robert, Idrobo, Juan Carlos, Ozturk, Ramazan, & Ajayan, Pulickel. Etching of transition metal dichalcogenide monolayers into nanoribbon arrays.  United States.  https://doi.org/10.1039/C8NH00364E

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                    Wang, Zixing, Zhang, Xiang, Hachtel, Jordan A., Apte, Amey, Tiwary, Chandra S., Vajtai, Robert, Idrobo, Juan Carlos, Ozturk, Ramazan, and Ajayan, Pulickel. Fri .  
"Etching of transition metal dichalcogenide monolayers into nanoribbon arrays".  United States.  https://doi.org/10.1039/C8NH00364E.  https://www.osti.gov/servlets/purl/1524868.

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@article{osti_1524868,

  title        = {Etching of transition metal dichalcogenide monolayers into nanoribbon arrays},

  author       = {Wang, Zixing and Zhang, Xiang and Hachtel, Jordan A. and Apte, Amey and Tiwary, Chandra S. and Vajtai, Robert and Idrobo, Juan Carlos and Ozturk, Ramazan and Ajayan, Pulickel},

  abstractNote = {Two-dimensional transition metal dichalcogenide (TMDC) nanoribbons are reported to exhibit interesting properties distinctly different from their 2D analogues, including a change of transport properties depending on the edge structure, enhanced exciton correlation effect and thermoelectric property. In this work we report a successful preparation method for large arrays of 2D TMDC nanoribbons without a template, using a reducing agent aqueous etchant. This approach is a simple and tuneable way for generating TMDC (e.g. MoS2 and MoSe2) nanoribbons from CVD grown 2D TMDCs on Si/SiO2 through liquid phase mechano-chemical reaction. The reducing agent converts Mo(IV) from the defect sites to a lower oxidation state, thus expanding the defects. Water acts as a detaching and tearing medium that pulls the TMDC flake into nanoribbons. The area of conversion, density, and aspect ratio of the nanoribbons can be tuned by concentration and potency of the etchant. The 2D nanoribbons possess high structural integrity, zigzag edges with chalcogen termination, and an increase of bandgap when ribbon width decreases. This method allows a scalable approach for 2D nanoribbons to be prepared for various applications.},

  doi          = {10.1039/C8NH00364E},

  journal      = {Nanoscale Horizons},

  number       = 3,

  volume       = 4,

  place        = {United States},

  year         = {Fri Jan 18 00:00:00 EST 2019},

  month        = {Fri Jan 18 00:00:00 EST 2019}

}

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Title: Etching of transition metal dichalcogenide monolayers into nanoribbon arrays

Abstract

Citation Formats

Progress, Challenges, and Opportunities in Two-Dimensional Materials Beyond Graphene journal, March 2013

Two-dimensional semiconductors for transistors journal, August 2016

Molybdenum and tungsten chalcogenides for lithium/sodium-ion batteries: Beyond MoS2 journal, June 2019

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journal, July 2015

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journal, January 2016

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journal, January 2013

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journal, October 2010

Scalable integration of periodically aligned 2D-MoS ₂ nanoribbon array
journal, July 2018

Template conversion of MoO ₃ to MoS ₂ nanoribbons: synthesis and electrochemical properties
journal, January 2018

Surface functionalization of two-dimensional metal chalcogenides by Lewis acid–base chemistry
journal, February 2016

Wetting of Mono and Few-Layered WS ₂ and MoS ₂ Films Supported on Si/SiO ₂ Substrates
journal, February 2015

Unusual reactivity of MoS ₂ nanosheets
journal, January 2016

Strong Photoluminescence Enhancement of MoS ₂ through Defect Engineering and Oxygen Bonding
journal, May 2014

Bonding Charge Density and Ultimate Strength of Monolayer Transition Metal Dichalcogenides
journal, July 2013

Adhesion Energy of MoS ₂ Thin Films on Silicon-Based Substrates Determined via the Attributes of a Single MoS ₂ Wrinkle
journal, February 2017

Chemical Vapor Deposition Synthesized Atomically Thin Molybdenum Disulfide with Optoelectronic-Grade Crystalline Quality
journal, August 2015

Large area synthesis, characterization, and anisotropic etching of two dimensional tungsten disulfide films
journal, June 2016

Raman-scattering measurements and first-principles calculations of strain-induced phonon shifts in monolayer MoS $_{2}$
journal, February 2013

Localized surface plasmons in nanostructured monolayer black phosphorus
conference, October 2016

Bonding Charge Density and Ultimate Strength of Monolayer Transition Metal Dichalcogenides
text, January 2013

Chemical Vapor Deposition Synthesized Atomically Thin Molybdenum Disulfide with Optoelectronic-Grade Crystalline Quality
text, January 2015