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Electrical contact resistance to two-dimensional (2D) semiconductors such as monolayer MoS_{2} is a key bottleneck in scaling the 2D field effect transistors (FETs). The 2D semiconductor in contact with three-dimensional metal creates…

Mesoscale and Nanoscale Physics · Physics 2021-05-25 Saurabh V. Suryavanshi , Blanka Magyari-Kope , Paul Lim , Connor McClellan , Kirby K. H. Smithe , Chris D. English , Eric Pop

Contact resistance is a severe performance bottleneck for electronic devices based on two-dimensional layered (2D) semiconductors, whose contacts are Schottky rather than Ohmic. Although there is general consensus that the injection…

Mesoscale and Nanoscale Physics · Physics 2017-11-08 Roberto Grassi , Yanqing Wu , Steven J. Koester , Tony Low

The application of two-dimensional (2D) semiconductors, such as monolayer MoS2, is limited by the high contact resistance commonly attributed to interfacial barriers at metal contacts. Furthermore, the dependence of electrical conductivity…

Two-dimensional (2D) semiconductors are promising candidates for scaled transistors because they are immune to mobility degradation at the monolayer limit. However, sub-10 nm scaling of 2D semiconductors, such as MoS2, is limited by the…

Materials Science · Physics 2022-02-22 Aravindh Kumar , Alvin Tang , H. -S. Philip Wong , Krishna Saraswat

High contact resistance remains a central obstacle to the integration of two-dimensional (2D) semiconductors in electronic devices. Recent advances have demonstrated that contact performance can be dramatically improved through interface…

With the decrease of the dimensions of electronic devices, the role played by electrical contacts is ever increasing, eventually coming to dominate the overall device volume and total resistance. This is especially problematic for…

Mesoscale and Nanoscale Physics · Physics 2018-07-03 Marcos H. D. Guimaraes , Hui Gao , Yimo Han , Kibum Kang , Saien Xie , Cheol-Joo Kim , David A. Muller , Daniel C. Ralph , Jiwoong Park

The high contact resistance between MoS$_2$ and metals hinders its potential as an ideal solution for overcoming the short channel effect in silicon-based FETs at sub-3nm scales. We theoretically designed a MoS$_2$-based transistor,…

Mesoscale and Nanoscale Physics · Physics 2024-12-25 Huan Wang , Xiaojie Liu , Hui Wang , Yin Wang , Haitao Yin

Despite being only a few atoms thick, single-layer two-dimensional (2D) materials display strong electron-photon interactions that could be utilized in efficient light modulators on extreme subwavelength scales. In various applications…

Mesoscale and Nanoscale Physics · Physics 2018-09-21 Sunny Gupta , Sharmila N. Shirodkar , Alex Kutana , Boris I. Yakobson

We investigated temperature dependence of contact resistance of an Au-Ti-Pd2Si ohmic contact to heavily doped n+-Si. The contact resistance increases with temperature owing to conduction through the metal shunts. In this case, the limiting…

Materials Science · Physics 2011-04-07 A. E. Belyaev , N. S. Boltovets , R. V. Konakova , Ya. Ya. Kudryk , A. V. Sachenko , V. N. Sheremet

Layered two-dimensional (2D) semiconducting transition metal dichalcogenides (TMD) have been widely isolated, synthesized, and characterized recently. Numerous 2D materials are identified as the potential candidates as channel materials for…

Materials Science · Physics 2014-10-31 Yuchen Du , Lingming Yang , Han Liu , Peide D. Ye

Studying the reason, why single-layer molybdenum disulfide (MoS$_2$) appears to fall short of its promising potential in flexible nanoelectronics, we found that the nature of contacts plays a more important role than the semiconductor…

Materials Science · Physics 2015-06-04 Igor Popov , Gotthard Seifert , David Tománek

Contact resistance of semiconducting transition metal dichalcogenides has been shown to decrease in lateral heterojunctions formed with their metallic phases but its origins remain elusive. Here we combine first principles and quantum…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 Adam Pfeifle , Marcelo A. Kuroda

Recent research in two-dimensional (2D) materials has boosted a renovated interest in the p-n junction, one of the oldest electrical components which can be used in electronics and optoelectronics. 2D materials offer remarkable flexibility…

Mesoscale and Nanoscale Physics · Physics 2018-09-12 Riccardo Frisenda , Aday J Molina-Mendoza , Thomas Mueller , Andres Castellanos-Gomez , Herre SJ van der Zant

Semiconducting MoTe2 is one of the few two-dimensional (2D) materials with a moderate band gap, similar to silicon. However, this material remains under-explored for 2D electronics due to ambient instability and predominantly p-type Fermi…

The development of advanced electronic devices is contingent upon sustainable material development and pioneering research breakthroughs. Traditional semiconductor-based electronic technology faces constraints in material thickness scaling…

Lateral charge transport of a two-dimensional (2D) electronic system can be much influenced by feeding a current into another closely spaced 2D conductor, known as the Coulomb drag phenomenon -- a powerful probe of electron-electron…

Mesoscale and Nanoscale Physics · Physics 2025-03-04 Yingjia Liu , Kaining Yang , Kenji Watanabe , Takashi Taniguchi , Wencai Ren , Zheng Vitto Han , Siwen Zhao

The semiconductor-metal junction is one of the most critical factors for high performance electronic devices. In two-dimensional (2D) semiconductor devices, minimizing the voltage drop at this junction is particularly challenging and…

Advanced microelectronics in the future may require semiconducting channel materials beyond silicon. Two-dimensional (2D) semiconductors, characterized by their atomically thin thickness, hold immense promise for high-performance electronic…

Atomically thin 2D materials span the common components of electronic circuits as metals, semi-conductors, and insulators, and can manifest correlated phases such as superconductivity, charge density waves, and magnetism. An ongoing…

A multiscale simulation approach is developed to simulate the contact transport properties between semimetal to a monolayer two-dimensional (2D) transition metal dichalcogenide (TMDC) semiconductor. The results elucidate the mechanisms for…

Mesoscale and Nanoscale Physics · Physics 2022-07-14 Tong Wu , Jing Guo
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