4.8 Article

Reducing Contact Resistance and Boosting Device Performance of Monolayer MoS2 by In Situ Fe Doping

Related references

Note: Only part of the references are listed.
Review Chemistry, Multidisciplinary

Wafer-scale single-orientation 2D layers by atomic edge-guided epitaxial growth

Yi Wan et al.

Summary: This review provides a systematic summary of the critical factors for synthesizing single-orientation 2D layers, with a focus on the role of atomic edge-guided epitaxial growth in the wafer-scale growth of single-crystal 2D layers.

CHEMICAL SOCIETY REVIEWS (2022)

Article Nanoscience & Nanotechnology

Dual-coupling-guided epitaxial growth of wafer-scale single-crystal WS2 monolayer on vicinal a-plane sapphire

Jinhuan Wang et al.

Summary: Epitaxial growth of two-inch single-crystal WS2 monolayer films on vicinal a-plane sapphire surfaces has been achieved, driven by a dual-coupling-guided mechanism resulting in unidirectional alignment of WS2 islands. The high quality of WS2 monolayers is evidenced by a photoluminescent circular helicity of about 55%, comparable to exfoliated WS2 flakes. The findings offer the opportunity to boost the production of wafer-scale single crystals of various two-dimensional materials on insulators for applications in integrated devices.

NATURE NANOTECHNOLOGY (2022)

Article Engineering, Electrical & Electronic

Healing of donor defect states in monolayer molybdenum disulfide using oxygen-incorporated chemical vapour deposition

Pin-Chun Shen et al.

Summary: Passivating sulfur vacancies in monolayer molybdenum disulfide using oxygen-incorporated chemical vapour deposition technique can lead to reduced n-type doping, enhanced photoluminescence, and improved contact resistance. The presence of molybdenum-oxygen bonding at sulfur vacancy sites in oxygen-incorporated MoS2 suppresses the formation of donor states, resulting in better performance compared to MoS2 grown without oxygen.

NATURE ELECTRONICS (2022)

Article Engineering, Electrical & Electronic

Reconfigurable photo-induced doping of two-dimensional van der Waals semiconductors using different photon energies

Seung-Young Seo et al.

Summary: Few-layer molybdenum ditelluride and tungsten diselenide field-effect transistors can be reversibly doped with different carrier types and concentrations using pulses of ultraviolet and visible light, allowing reconfigurable complementary metal-oxide-semiconductor circuits to be created. This reconfigurable doping is attributed to selective light-lattice interactions, such as the formation of tellurium self-interstitial defects under ultraviolet illumination and the incorporation of substitutional oxygen in tellurium and molybdenum vacancies under visible illumination. By utilizing this approach, a complementary metal-oxide-semiconductor (CMOS) device on a single channel can be created, where the circuit functions can be dynamically reset from a CMOS inverter to a CMOS switch using pulses of different light frequencies.

NATURE ELECTRONICS (2021)

Article Multidisciplinary Sciences

Promises and prospects of two-dimensional transistors

Yuan Liu et al.

Summary: The article reviews the promise and current status of 2D transistors, emphasizing the potential misestimation or misinterpretation of widely used device parameters. It suggests using more reliable methods to assess the potential of diverse 2D semiconductors and highlights key technical challenges in optimizing the performance of 2D transistors.

NATURE (2021)

Article Multidisciplinary Sciences

Near-ideal van der Waals rectifiers based on all-two-dimensional Schottky junctions

Xiankun Zhang et al.

Summary: In this study, a near-ideal rectifier in all-2D Schottky junctions composed of 1T-MoTe2 and monolayer MoS2 was reported, demonstrating an efficient strategy to address Fermi pinning effects and increase Schottky barrier height. By optimizing the van der Waals integration of the two 2D materials and reducing intrinsic defect doping in MoS2, the Schottky barrier width was effectively enlarged by 59%. The rectifier showed a near-unity ideality factor, high rectifying ratio, and exceptional external quantum efficiency, suggesting a promising alternative to enhance the performance of 2D-material-based electronic devices.

NATURE COMMUNICATIONS (2021)

Article Multidisciplinary Sciences

Ultralow contact resistance between semimetal and monolayer semiconductors

Pin-Chun Shen et al.

Summary: The article discusses achieving ohmic contact between semimetallic bismuth and semiconducting monolayer transition metal dichalcogenides, suppressing metal-induced gap states and significantly reducing contact resistance. Experimental results demonstrate zero Schottky barrier height and high on-state current density on multilayer MoS2.

NATURE (2021)

Article Multidisciplinary Sciences

Seeded 2D epitaxy of large-area single-crystal films of the van der Waals semiconductor 2H MoTe2

Xiaolong Xu et al.

Summary: The study presents a method for synthesizing wafer-scale single-crystalline 2H MoTe2 semiconductors on an amorphous insulating substrate, with excellent uniformity and 100% device yield. The 2D single-crystalline film can serve as a template for further rapid epitaxy in a vertical manner.

SCIENCE (2021)

Article Engineering, Electrical & Electronic

Transferred van der Waals metal electrodes for sub-1-nm MoS2 vertical transistors

Liting Liu et al.

Summary: Vertical transistors using molybdenum disulfide with channel lengths down to one atomic layer can be created with a high-quality metal-semiconductor interface through a mechanical van der Waals transfer process.

NATURE ELECTRONICS (2021)

Review Chemistry, Multidisciplinary

Strategies, Status, and Challenges in Wafer Scale Single Crystalline Two-Dimensional Materials Synthesis

Leining Zhang et al.

Summary: The successful exfoliation of graphene has led to an increased focus on research of two-dimensional materials, which exhibit unique properties and potential applications. To achieve large-scale practical applications, wafer scale single crystalline 2D materials are crucial but face challenges in synthesis. Different routes for synthesizing these materials have been explored, with some successes in WSSC graphene, hBN, and MoS2, while growth of other WSSC 2D materials remains a significant challenge. Opportunities for future research in the synthesis of various wafer scale single crystalline 2D materials have been summarized.

CHEMICAL REVIEWS (2021)

Article Chemistry, Physical

Site-specific chemical doping reveals electron atmospheres at the surfaces of organic semiconductor crystals

Tao He et al.

Summary: Chemical doping strategy for organic semiconductors targeting crystallographic step edges leads to significant improvement in electron transport properties, with a tenfold increase in electron mobility and a switch from thermally activated to band-like behaviour. This approach provides evidence for doping-induced space charge and suggests new site-specific doping strategies for organic semiconductors, deviating from traditional randomly distributed substitutional impurities. The presence of doping-induced electron atmospheres in organic systems is confirmed, aligning with expectations from conventional solid-state theory.

NATURE MATERIALS (2021)

Article Nanoscience & Nanotechnology

Epitaxial growth of wafer-scale molybdenum disulfide semiconductor single crystals on sapphire

Taotao Li et al.

Summary: This study successfully achieved epitaxial growth of 2-inch monolayer molybdenum disulfide single crystals on a sapphire substrate, breaking through the technical challenges in the field of MoS2. Tests showed that the MoS2 has a single crystal structure with excellent substrate uniformity, and its device performance has reached a high level.

NATURE NANOTECHNOLOGY (2021)

Article Engineering, Electrical & Electronic

Remote modulation doping in van der Waals heterostructure transistors

Donghun Lee et al.

Summary: Remote modulation doping through van der Waals heterostructure effectively enhances carrier modulation and reduces impurity scattering, leading to improved charge transport in two-dimensional semiconductors. In comparison, direct doping introduces impurities that hinder charge transport, resulting in lower mobility.

NATURE ELECTRONICS (2021)

Article Chemistry, Multidisciplinary

Single-Atom Vacancy Doping in Two-Dimensional Transition Metal Dichalcogenides

Xiankun Zhang et al.

Summary: This article summarizes the progress of single-atom vacancy doping in 2D TMDCs and its applications in optoelectronic and electronic devices. It discusses the common defects and the density-largest-defect type in 2D TMDCs, as well as the healing and manufacturing strategies of chalcogen vacancies. The doping mechanism of single-atom vacancies in 2D TMDCs and their regulation of electrical properties are clarified, along with the correlations between chalcogen vacancies and optical signals from Raman and photoluminescence spectroscopies. Additionally, it reviews the current applications of single-atom vacancy doping in 2D TMDCs materials and points out potential challenges and future development trends for next-generation electronic and optoelectronic devices.

ACCOUNTS OF MATERIALS RESEARCH (2021)

Article Nanoscience & Nanotechnology

Substrate-directed synthesis of MoS2 nanocrystals with tunable dimensionality and optical properties

Tomojit Chowdhury et al.

NATURE NANOTECHNOLOGY (2020)

Article Chemistry, Multidisciplinary

Synthesis of Co-Doped MoS2 Monolayers with Enhanced Valley Splitting

Jiadong Zhou et al.

ADVANCED MATERIALS (2020)

Article Multidisciplinary Sciences

Wafer-scale single-crystal hexagonal boron nitride monolayers on Cu (111)

Tse-An Chen et al.

NATURE (2020)

Article Chemistry, Multidisciplinary

Enhanced Valley Zeeman Splitting in Fe-Doped Monolayer MoS2

Qi Li et al.

ACS NANO (2020)

Article Multidisciplinary Sciences

Enabling room temperature ferromagnetism in monolayer MoS2 via in situ iron-doping

Shichen Fu et al.

NATURE COMMUNICATIONS (2020)

Article Multidisciplinary Sciences

General synthesis of two-dimensional van der Waals heterostructure arrays

Jia Li et al.

NATURE (2020)

Article Multidisciplinary Sciences

How 2D semiconductors could extend Moore’s law

Ming-Yang Li et al.

NATURE (2019)

Article Multidisciplinary Sciences

Van der Waals integration before and beyond two-dimensional materials

Yuan Liu et al.

NATURE (2019)

Review Multidisciplinary Sciences

Graphene and two-dimensional materials for silicon technology

Deji Akinwande et al.

NATURE (2019)

Article Engineering, Electrical & Electronic

Patterning metal contacts on monolayer MoS2 with vanishing Schottky barriers using thermal nanolithography

Xiaorui Zheng et al.

NATURE ELECTRONICS (2019)

Article Engineering, Electrical & Electronic

Transferred via contacts as a platform for ideal two-dimensional transistors

Younghun Jung et al.

NATURE ELECTRONICS (2019)

Article Multidisciplinary Sciences

A library of atomically thin metal chalcogenides

Jiadong Zhou et al.

NATURE (2018)

Article Multidisciplinary Sciences

Telluriding monolayer MoS2 and WS2 via alkali metal scooter

Seok Joon Yun et al.

NATURE COMMUNICATIONS (2017)

Article Multidisciplinary Sciences

A two-dimensional Fe-doped SnS2 magnetic semiconductor

Bo Li et al.

NATURE COMMUNICATIONS (2017)

Article Chemistry, Multidisciplinary

Transition-Metal Substitution Doping in Synthetic Atomically Thin Semiconductors

Jian Gao et al.

ADVANCED MATERIALS (2016)

Article Multidisciplinary Sciences

MoS2 transistors with 1-nanometer gate lengths

Sujay B. Desai et al.

SCIENCE (2016)

Review Multidisciplinary Sciences

2D materials and van der Waals heterostructures

K. S. Novoselov et al.

SCIENCE (2016)

Article Materials Science, Multidisciplinary

Two-dimensional semiconductors for transistors

Manish Chhowalla et al.

Nature Reviews Materials (2016)

Review Chemistry, Physical

Electrical contacts to two-dimensional semiconductors

Adrien Allain et al.

NATURE MATERIALS (2015)

Article Multidisciplinary Sciences

Towards intrinsic charge transport in monolayer molybdenum disulfide by defect and interface engineering

Zhihao Yu et al.

NATURE COMMUNICATIONS (2014)

Article Chemistry, Multidisciplinary

Tunable Photoluminescence of Monolayer MoS2 via Chemical Doping

Shinichiro Mouri et al.

NANO LETTERS (2013)