In Situ Oxygen Doping of Monolayer MoS2 for Novel Electronics
Jian Tang,Zheng Wei,Qinqin Wang,Yu Wang,Bo Han,Xiaomei Li,Xiaomei Li,Biying Huang,Mengzhou Liao,Jieying Liu,Na Li,Yanchong Zhao,Cheng Shen,Yutuo Guo,Xuedong Bai,Peng Gao,Wei Yang,Lan Chen,Kehui Wu,Rong Yang,Dongxia Shi,Guangyu Zhang +21 more
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In this paper, an in situ doping of oxygen atoms in monolayer molybdenum disulfide (MoS2 ) is reported during the chemical vapor deposition process.Abstract:
In 2D semiconductors, doping offers an effective approach to modulate their optical and electronic properties. Here, an in situ doping of oxygen atoms in monolayer molybdenum disulfide (MoS2 ) is reported during the chemical vapor deposition process. Oxygen concentrations up to 20-25% can be reliable achieved in these doped monolayers, MoS2-x Ox . These oxygen dopants are in a form of substitution of sulfur atoms in the MoS2 lattice and can reduce the bandgap of intrinsic MoS2 without introducing in-gap states as confirmed by photoluminescence spectroscopy and scanning tunneling spectroscopy. Field effect transistors made of monolayer MoS2-x Ox show enhanced electrical performances, such as high field-effect mobility (≈100 cm2 V-1 s-1 ) and inverter gain, ultrahigh devices' on/off ratio (>109 ) and small subthreshold swing value (≈80 mV dec-1 ). This in situ oxygen doping technique holds great promise on developing advanced electronics based on 2D semiconductors.read more
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Molecular Approach to Engineer Two-Dimensional Devices for CMOS and beyond-CMOS Applications.
TL;DR: In this paper, the authors introduce emerging 2DMs, various classes of macro-molecules, and molecular switches and discuss their relevant properties, and discuss the use of molecules and assemblies thereof to boost the performance of 2D transistors for CMOS applications and to impart diverse functionalities in beyond-CMOS devices.
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Wafer-Scale Oxygen-Doped MoS2 Monolayer
Zheng Wei,Jian Tang,Xuanyi Li,Zhen Chi,Yu Wang,Qinqin Wang,Bo Han,Na Li,Biying Huang,Jiawei Li,Hua Yu,Jiahao Yuan,Hailong Chen,Jia-Tao Sun,Jia-Tao Sun,Lan Chen,Kehui Wu,Peng Gao,Congli He,Wei Yang,Dongxia Shi,Rong Yang,Guangyu Zhang +22 more
Journal ArticleDOI
Activating transition metal dichalcogenide monolayers as efficient electrocatalysts for the oxygen reduction reaction via single atom doping
Shufang Tian,Qing Tang +1 more
TL;DR: In this paper, the authors reveal the activity of 2D transition-metal-dichalcogenides (TMDs) for electrocatalytic applications, while the catalytic properties of the majority of other TMDs remain undiscovered.
Journal ArticleDOI
A wafer-scale synthesis of monolayer MoS2 and their field-effect transistors toward practical applications
Yuchun Liu,Fuxing Gu +1 more
TL;DR: In this paper, the authors illustrated the latest research advances in wafer-scale monolayer MoS2 synthesis by different methods, including Au-assisted exfoliation, CVD, thin film sulfurization, MOCVD, ALD, VLS method, and the thermolysis of thiosalts.
Journal ArticleDOI
Low-defect-density WS2 by hydroxide vapor phase deposition
Yi Wan,En Li,Zhihao Yu,Jing Kai Huang,Ming-Yang Li,Ang-Sheng Chou,Yi‐Te Lee,Chien Ju Lee,Hung-Chang Hsu,Qin Zhan,Areej Aljarb,Jui-Han Fu,S. Chiu,Xinran Wang,Juhn-Jong Lin,Ya Ping Chiu,Wen-Hao Chang,Han Wang,Yumeng Shi,Nian Lin,Yingchun Cheng,Vincent Tung,Lain-Jong Li +22 more
TL;DR: In this article , the authors reported that the hydroxide W species, an extremely pure vapor phase metal precursor form, is very efficient for sulfurization, leading to about one order of magnitude lower defect density compared to those from conventional CVD methods.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
Paolo Giannozzi,Stefano Baroni,Stefano Baroni,Nicola Bonini,Matteo Calandra,Roberto Car,Carlo Cavazzoni,Davide Ceresoli,Guido L. Chiarotti,Matteo Cococcioni,Ismaila Dabo,Andrea Dal Corso,Andrea Dal Corso,Stefano de Gironcoli,Stefano de Gironcoli,Stefano Fabris,Stefano Fabris,Guido Fratesi,Ralph Gebauer,Ralph Gebauer,Uwe Gerstmann,Christos Gougoussis,Anton Kokalj,Michele Lazzeri,Layla Martin-Samos,Nicola Marzari,Francesco Mauri,Riccardo Mazzarello,Stefano Paolini,Alfredo Pasquarello,Lorenzo Paulatto,Lorenzo Paulatto,Carlo Sbraccia,Sandro Scandolo,Sandro Scandolo,Gabriele Sclauzero,Gabriele Sclauzero,Ari P. Seitsonen,Alexander Smogunov,Paolo Umari,Renata M. Wentzcovitch +40 more
TL;DR: QUANTUM ESPRESSO as discussed by the authors is an integrated suite of computer codes for electronic-structure calculations and materials modeling, based on density functional theory, plane waves, and pseudopotentials (norm-conserving, ultrasoft, and projector-augmented wave).
Journal ArticleDOI
Soft self-consistent pseudopotentials in a generalized eigenvalue formalism.
TL;DR: Novel features are that the pseudopotential itself becomes charge-state dependent, the usual norm-conservation constraint does not apply, and a generalized eigenproblem is introduced.
Journal ArticleDOI
Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.
TL;DR: This work reviews the historical development of Transition metal dichalcogenides, methods for preparing atomically thin layers, their electronic and optical properties, and prospects for future advances in electronics and optoelectronics.
Journal ArticleDOI
Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
Paolo Giannozzi,Stefano Baroni,Nicola Bonini,Matteo Calandra,Roberto Car,Carlo Cavazzoni,Davide Ceresoli,Guido L. Chiarotti,Matteo Cococcioni,Ismaila Dabo,A. Dal Corso,Stefano Fabris,Guido Fratesi,S. de Gironcoli,Ralph Gebauer,U. Gerstmann,Christos Gougoussis,Anton Kokalj,Michele Lazzeri,Layla Martin-Samos,Nicola Marzari,Francesco Mauri,Riccardo Mazzarello,Stefano Paolini,Alfredo Pasquarello,Lorenzo Paulatto,Carlo Sbraccia,Sandro Scandolo,Gabriele Sclauzero,Ari P. Seitsonen,Alexander Smogunov,Paolo Umari,Renata M. Wentzcovitch +32 more
TL;DR: Quantum ESPRESSO as discussed by the authors is an integrated suite of computer codes for electronic-structure calculations and materials modeling, based on density functional theory, plane waves, and pseudopotentials (norm-conserving, ultrasoft, and projector-augmented wave).