Semiconductor-less vertical transistor with ION/IOFF of 106

Jun-Ho Lee, Dong Hoon Shin, Heejun Yang, Nae Bong Jeong, Do-Hyun Park, Kenji Watanabe, Takashi Taniguchi, Eunah Kim, Sang Wook Lee, Sung Ho Jhang, Bae Ho Park, Young Kuk and Hyun-Jong Chung ()
Additional contact information
Jun-Ho Lee: Konkuk University
Dong Hoon Shin: Ewha Womans University
Heejun Yang: Korea Advanced Institute of Science and Technology
Nae Bong Jeong: Konkuk University
Do-Hyun Park: Konkuk University
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Eunah Kim: Sungkyunkwan University
Sang Wook Lee: Ewha Womans University
Sung Ho Jhang: Konkuk University
Bae Ho Park: Konkuk University
Young Kuk: Daegu Gyeongbuk Institute of Science & Technology
Hyun-Jong Chung: Konkuk University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Semiconductors have long been perceived as a prerequisite for solid-state transistors. Although switching principles for nanometer-scale devices have emerged based on the deployment of two-dimensional (2D) van der Waals heterostructures, tunneling and ballistic currents through short channels are difficult to control, and semiconducting channel materials remain indispensable for practical switching. In this study, we report a semiconductor-less solid-state electronic device that exhibits an industry-applicable switching of the ballistic current. This device modulates the field emission barrier height across the graphene-hexagonal boron nitride interface with ION/IOFF of 106 obtained from the transfer curves and adjustable intrinsic gain up to 4, and exhibits unprecedented current stability in temperature range of 15–400 K. The vertical device operation can be optimized with the capacitive coupling in the device geometry. The semiconductor-less switching resolves the long-standing issue of temperature-dependent device performance, thereby extending the potential of 2D van der Waals devices to applications in extreme environments.

Date: 2021
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DOI: 10.1038/s41467-021-21138-y

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