| INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Effect of electrical contact on performance of WSe2 field effect transistors |
| Yi-Di Pang(庞奕荻), En-Xiu Wu(武恩秀), Zhi-Hao Xu(徐志昊), Xiao-Dong Hu(胡晓东), Sen Wu(吴森), Lin-Yan Xu(徐临燕), and Jing Liu(刘晶)† |
| State Key Laboratory of Precision Measurement Technology and Instruments, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China |
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Abstract Two-dimensional (2D) transition metal dichalcogenides (TMDCs) such as tungsten diselenide (WSe2) have spead many interesting physical properties, which may become ideal candidates to develop new generation electronic and optoelectronic devices. In order to reveal essential features of 2D TMDCs, it is necessary to fabricate high-quality devices with reliable electrical contact. We systematically analyze the effect of graphene and metal contacts on performance of multi-layered WSe2 field effect transistors (FETs). The temperature-dependent transport characteristics of both devices are tested. Only graphene-contacted WSe2 FETs are observed with the metal-insulator transition phenomenon which mainly attributes to the ultra-clean contact interface and lowered contact barrier. Further characterization on contact barrier demonstrates that graphene contact enables lower contact barrier with WSe2 than metal contact, since the Fermi level of graphene can be modulated by the gate bias to match the Fermi level of the channel material. We also analyze the carrier mobility of both devices under different temperatures, revealing that graphene contact can reduce the charge scattering of the device caused by ionized impurities and phonon vibrations in low and room temperature regions, respectively. This work is expected to provide reference for fabricating 2D material devices with decent performances.
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Received: 17 October 2020
Revised: 26 November 2020
Accepted manuscript online: 30 December 2020
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PACS:
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85.35.-p
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(Nanoelectronic devices)
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85.30.Tv
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(Field effect devices)
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81.16.-c
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(Methods of micro- and nanofabrication and processing)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 52075385), the National Key R&D Program of China (2018YFA0307200), and the 111 Project (Grant No. B07014). |
Corresponding Authors:
Jing Liu
E-mail: jingliu_1112@tju.edu.cn
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Cite this article:
Yi-Di Pang(庞奕荻), En-Xiu Wu(武恩秀), Zhi-Hao Xu(徐志昊), Xiao-Dong Hu(胡晓东), Sen Wu(吴森), Lin-Yan Xu(徐临燕), and Jing Liu(刘晶) Effect of electrical contact on performance of WSe2 field effect transistors 2021 Chin. Phys. B 30 068501
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[1] Schwierz F 2010 Nat. Nanotechnol. 5 487
[2] Jariwala D, Sangwan V K, Lauhon L J, Marks T J and Hersam M C 2014 ACS Nano 8 1102
[3] Mak K F, Lee C, Hone J, Shan J and Heinz T F 2010 Phys. Rev. Lett. 105 136805
[4] Liu Y, Weiss N O, Duan X, Cheng H C, Huang Y and Duan X 2016 Nat. Rev. Mater. 1 16042
[5] Liu B, Chen L, Liu G, Abbas A N, Fathi M and Zhou C 2014 ACS Nano 8 5304
[6] Das S, Chen H Y, Penumatcha A V and Appenzeller J 2013 Nano Lett. 13 100
[7] Liu Y, Wu H, Cheng H C, Yang S, Zhu E, He Q, Ding M, Li D, Guo J, Weiss N O, Huang Y and Duan X 2015 Nano Lett. 15 3030
[8] Radisavljevic B and Kis A 2013 Nat. Mater. 12 815
[9] Kaushik N, Nipane A, Basheer F, Dubey S, Grover S, Deshmukh M M and Lodha S 2014 Appl. Phys. Lett. 105 113505
[10] Kappera R, Voiry D, Yalcin S E, Branch B, Gupta G, Mohite A D and Chhowalla M 2014 Nat. Mater. 13 1128
[11] Wang J, Yao Q, Huang C W, Zou X, Liao L, Chen S, Fan Z, Zhang K, Wu W, Xiao X, Jiang C and Wu W W 2016 Adv. Mater. 28 8302
[12] Lee S, Tang A, Aloni S and Philip Wong H S 2016 Nano Lett. 16 276
[13] Chen J, Feng Z, Fan S, Shi S, Yue Y, Shen W, Xie Y, Wu E, Sun C, Liu J, Zhang H, Pang W, Sun D, Feng W, Feng Y, Wu S and Zhang D 2017 ACS Appl. Mater. Interfaces 9 30107
[14] Roy T, Tosun M, Kang J S, Sachid A B, Desai S B, Hettick M, Hu C C and Javey A 2014 ACS Nano 8 6259
[15] Cheng Q, Pang J, Sun D, Wang J, Zhang S, Liu F, Chen Y, Yang R, Liang N, Lu X, Ji Y, Wang J, Zhang C, Sang Y, Liu H and Zhou W 2020 InfoMat. 2 656
[16] Hirai H, Tsuchiya H, Kamakura Y, Mori N and Ogawa M 2014 J. Appl. Phys. 116 083703
[17] Lee J H, Gul H Z, Kim H, Moon B H, Adhikari S, Kim J H, Choi H, Lee Y H and Lim S C 2017 Nano Lett. 17 673
[18] Preziosi D, Lopez-Mir L, Li X, Cornelissen T, Lee J H, Trier F, Bouzehouane K, Valencia S, Gloter A, Barthélémy A and Bibes M 2018 Nano Lett. 18 2226
[19] Huang Y, Sutter E, Shi N N, Zheng J, Yang T, Englund D, Gao H J and Sutter P 2015 Nano Lett. 9 10612
[20] Ferrari A C, Meyer J C, Scardaci V, Casiraghi C, Lazzeri M, Mauri F, Piscanec S, Jiang D, Novoselov K S, Roth S and Geim A K 2006 Phys. Rev. Lett. 97 187401
[21] Zhao W, Ghorannevis Z, Amara K K, Pang J R, Toh M, Zhang X, Kloc C, Tan P H and Eda G 2013 Nanoscale 5 9677
[22] Zhou H, Wang C, Shaw J C, Cheng R, Chen Y, Huang X, Liu Y, Weiss N O, Lin Z, Huang Y and Duan X 2015 Nano Lett. 15 709
[23] Larentis S, Fallahazad B, Tutuc E, Larentis S, Fallahazad B and Tutuc E 2015 Appl. Phys. Lett. 101 223104 |
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