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Wang L, Liu S, Gao G, Pang Y, Yin X, Feng X, Zhu L, Bai Y, Chen L, Xiao T, Wang X, Qin Y, Wang ZL. Ultrathin Piezotronic Transistors with 2 nm Channel Lengths. ACS NANO 2018; 12:4903-4908. [PMID: 29701956 DOI: 10.1021/acsnano.8b01957] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Because silicon transistors are rapidly approaching their scaling limit due to short-channel effects, alternative technologies are urgently needed for next-generation electronics. Here, we demonstrate ultrathin ZnO piezotronic transistors with a ∼2 nm channel length using inner-crystal self-generated out-of-plane piezopotential as the gate voltage to control the carrier transport. This design removes the need for external gate electrodes that are challenging at nanometer scale. These ultrathin devices exhibit a strong piezotronic effect and excellent pressure-switching characteristics. By directly converting mechanical drives into electrical control signals, ultrathin piezotronic devices could be used as active nanodevices to construct the next generation of electromechanical devices for human-machine interfacing, energy harvesting, and self-powered nanosystems.
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Affiliation(s)
- Longfei Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Shuhai Liu
- School of Advanced Materials and Nanotechnology , Xidian University , Xi'an , 710071 , China
| | - Guoyun Gao
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yaokun Pang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xin Yin
- Department of Materials Science and Engineering , University of Wisconsin-Madison Madison , Wisconsin 53706 , United States
| | - Xiaolong Feng
- Microsystems and Terahertz Research Center , China Academy of Engineering Physics , Chengdu , Sichuan 610200 , China
| | - Laipan Zhu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yu Bai
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Libo Chen
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Tianxiao Xiao
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xudong Wang
- Department of Materials Science and Engineering , University of Wisconsin-Madison Madison , Wisconsin 53706 , United States
| | - Yong Qin
- School of Advanced Materials and Nanotechnology , Xidian University , Xi'an , 710071 , China
- Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology , Lanzhou University , Lanzhou 730000 , China
| | - Zhong Lin Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
- College of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
- School of Material Science and Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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Nanometre-thick single-crystalline nanosheets grown at the water-air interface. Nat Commun 2016; 7:10444. [PMID: 26786708 PMCID: PMC4736115 DOI: 10.1038/ncomms10444] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/10/2015] [Indexed: 12/22/2022] Open
Abstract
To date, the preparation of free-standing 2D nanomaterials has been largely limited to the exfoliation of van der Waals solids. The lack of a robust mechanism for the bottom-up synthesis of 2D nanomaterials from non-layered materials has become an obstacle to further explore the physical properties and advanced applications of 2D nanomaterials. Here we demonstrate that surfactant monolayers can serve as soft templates guiding the nucleation and growth of 2D nanomaterials in large area beyond the limitation of van der Waals solids. One- to 2-nm-thick, single-crystalline free-standing ZnO nanosheets with sizes up to tens of micrometres are synthesized at the water-air interface. In this process, the packing density of surfactant monolayers adapts to the sub-phase metal ions and guides the epitaxial growth of nanosheets. It is thus named adaptive ionic layer epitaxy (AILE). The electronic properties of ZnO nanosheets and AILE of other materials are also investigated.
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Wagner SR, Huang B, Park C, Feng J, Yoon M, Zhang P. Growth of Metal Phthalocyanine on Deactivated Semiconducting Surfaces Steered by Selective Orbital Coupling. PHYSICAL REVIEW LETTERS 2015; 115:096101. [PMID: 26371664 DOI: 10.1103/physrevlett.115.096101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Indexed: 05/20/2023]
Abstract
Using scanning tunneling microscopy and density functional theory, we show that the molecular ordering and orientation of metal phthalocyanine molecules on the deactivated Si surface display a strong dependency on the central transition-metal ion, driven by the degree of orbital hybridization at the heterointerface via selective p-d orbital coupling. This Letter identifies a selective mechanism for modifying the molecule-substrate interaction which impacts the growth behavior of transition-metal-incorporated organic molecules on a technologically relevant substrate for silicon-based devices.
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Affiliation(s)
- Sean R Wagner
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-2320, USA
| | - Bing Huang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Changwon Park
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Jiagui Feng
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-2320, USA
| | - Mina Yoon
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Pengpeng Zhang
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-2320, USA
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