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Monolayer WSe2 is a two dimensional (2D) semiconductor with a direct bandgap, and it has been recently explored as a promising material for electronics and optoelectronics. Low field effect mobility is the main constraint preventing WSe2…

Materials Science · Physics 2016-05-02 Bilu Liu , Yuqiang Ma , Anyi Zhang , Liang Chen , Ahmad N. Abbas , Yihang Liu , Chenfei Shen , Haochuan Wan , Chongwu Zhou

Using the first-principles calculations based on density functional theory, we systematically investigate the strain-engineering (tensile and compressive strain) electronic, mechanical and transport properties of monolayer penta-SiC$_2$. By…

Materials Science · Physics 2017-01-16 Yuanfeng Xu , Zeyu Ning , Hao Zhang , Gang Ni , Hezhu Shao , Bo Peng , Xiangchao Zhang , Xiaoying He , Yongyuan Zhu , Heyuan Zhu

We demonstrate dual-gated $p$-type field-effect transistors (FETs) based on few-layer tungsten diselenide (WSe$_2$) using high work-function platinum source/drain contacts, and a hexagonal boron nitride top-gate dielectric. A device…

Strain engineering is an important method for tuning the properties of semiconductors and has been used to improve the mobility of silicon transistors for several decades. Recently, theoretical studies have predicted that strain can also…

Materials Science · Physics 2022-10-07 Isha M. Datye , Alwin Daus , Ryan W. Grady , Kevin Brenner , Sam Vaziri , Eric Pop

We report high performance p-type field-effect transistors based on single layered (thickness, ~0.7 nm) WSe2 as the active channel with chemically doped source/drain contacts and high-{\kappa} gate dielectrics. The top-gated monolayer…

Mesoscale and Nanoscale Physics · Physics 2012-06-22 Hui Fang , Steven Chuang , Ting Chia Chang , Kuniharu Takei , Toshitake Takahashi , Ali Javey

Here, we present a temperature ($T$) dependent comparison between field-effect and Hall mobilities in field-effect transistors based on few-layered WSe$_2$ exfoliated onto SiO$_2$. Without dielectric engineering and beyond a $T$-dependent…

Mesoscale and Nanoscale Physics · Physics 2015-03-12 N. R. Pradhan , D. Rhodes , S. Memaran , J. M. Poumirol , D. Smirnov , S. Talapatra , S. Feng , N. Perea-Lopez , A. L. Elias , M. Terrones , P. M. Ajayan , L. Balicas

We present a computational study on the impact of tensile/compressive uniaxial ($\varepsilon_{xx}$) and biaxial ($\varepsilon_{xx}=\varepsilon_{yy}$) strain on monolayer MoS$_{2}$ NMOS and PMOS FETs. The material properties like band…

Mesoscale and Nanoscale Physics · Physics 2013-08-02 Amretashis Sengupta , Ram Krishna Ghosh , Santanu Mahapatra

Two-dimensional (2D) materials are a new class of materials with interesting physical properties and ranging from nanoelectronics to sensing and photonics. In addition to graphene, the most studied 2D material, monolayers of other layered…

Mesoscale and Nanoscale Physics · Physics 2013-06-25 Branimir Radisavljevic , Andras Kis

Strain engineering can modulate the material properties of two-dimensional (2D) semiconductors for electronic and optoelectronic applications. Recent theory and experiments have found that uniaxial tensile strain can improve the electron…

Atomically thin semiconducting MoS2 is of great interest for high-performance flexible electronic and optoelectronic devices. Initial measurements using back-gated field-effect transistor (FET) structures on SiO2 yielded mobility of 1-50…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 Michael S. Fuhrer , James Hone

Two-dimensional transition metal dichalcogenides show great potential as promising thermoelectric materials due to their lower dimensionality, the unique density of states and quantum confinement of carriers. The effect of mechanical strain…

Computational Physics · Physics 2019-05-28 Jayanta Bera , Satyajit Sahu

In this work, we demonstrate interfacial charge transfer-driven transport enhancement in few-layer graphene monolayer MoS2 vertical heterostructure field-effect transistor. Raman scattering and Raman intensity mapping results confirm the…

The electronic, phonon, and thermoelectric properties of a two-dimensional HfS2 monolayer are investigated by using the first-principles calculations combined with the Boltzmann transport theory. The band valleys of the HfS2 monolayer can…

Mesoscale and Nanoscale Physics · Physics 2016-08-22 H. Y. Lv , W. J. Lu , X. Luo , H. Y. Lu , X. B. Zhu , Y. P. Sun

In this paper the effect of biaxial and uniaxial strain on the mobility of single-layer MoS$_{2}$ for temperatures T $>$ 100 K is investigated. Scattering from intrinsic phonon modes, remote phonon and charged impurities are considered…

Mesoscale and Nanoscale Physics · Physics 2015-09-30 Manouchehr Hosseini , Mohammad Elahi , Mahdi Pourfath , David Esseni

Pentagonal PdSe2 is a promising candidate for layered electronic devices, owing to its high air-stability and anisotropic transport properties. Here, we investigate the performance of p-type FET based on PdSe$_2$ mono-layer using…

Mesoscale and Nanoscale Physics · Physics 2023-05-02 Keshari Nandan , Amit Agarwal , Somnath Bhowmick , Yogesh S. Chauhan

We performed systematic transport measurements on FeSe single crystals with applying in-plane biaxial strain $\varepsilon$ ranging from -0.96% to 0.23%. Biaxial strain was introduced by firmly gluing samples to various substrate materials…

Superconductivity · Physics 2021-04-07 M. Nakajima , Y. Ohata , S. Tajima

In our previous paper, we reported on switchable monolayer MoS2 transistors with a high on-off ratio and we claim that dielectric screening can be used to increase the mobility of monolayer MoS2. We estimated its mobility using a method…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 Branimir Radisavljevic , Andras Kis

Employing flux-grown single crystal WSe$_2$, we report charge carrier scattering behaviors measured in $h$-BN encapsulated monolayer field effect transistors. We perform quantum transport measurements across various hole densities and…

The hole carrier field-effect mobility of hybrid molybdenum disulfide (MoS2) nanoparticles suspended in poly(3-hexylthiophene) (P3HT) thin film transistor (TFT) was found to be enhanced when it compared to P3HT-only TFTs. The improvement in…

Applied Physics · Physics 2020-02-05 Hyunwoo Choi , William Wong

Due to their great potential in electronics, optoelectronics and piezoelectronics, Janus transition metal dichalcogenide (TMD) monolayers have attracted increasing research interest, the MoSSe of which with sandwiched S-Mo-Se structure has…

Materials Science · Physics 2020-01-08 San-Dong Guo , Xiao-Shu Guo , Ye Deng
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