Ultrasensitive 2D ZnO Piezotronic Transistor Array for High Resolution Tactile Imaging

Shuhai Liu; Longfei Wang; Xiaolong Feng; Zheng Wang; Qi Xu; Suo Bai; Yong Qin; Zhong Lin Wang

doi:10.1002/adma.201606346

Ultrasensitive 2D ZnO Piezotronic Transistor Array for High Resolution Tactile Imaging

Adv Mater. 2017 Apr;29(16). doi: 10.1002/adma.201606346. Epub 2017 Feb 20.

Authors

Shuhai Liu^{1

2}, Longfei Wang¹, Xiaolong Feng³, Zheng Wang⁴, Qi Xu⁴, Suo Bai⁴, Yong Qin², Zhong Lin Wang^{1

5}

Affiliations

¹ Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, China.
² School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710071, China.
³ Microsystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu, Sichuan, 610200, China.
⁴ Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University, Gansu, 730000, China.
⁵ School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.

PMID: 28218797
DOI: 10.1002/adma.201606346

Abstract

In this paper, a new kind of 2D piezotronic transistor (PT) with the highest sensitivity till date has been designed and demonstrated, and the 2DPT array with ultrahigh spatial resolution has been developed through assembling ZnO nanoplatelets into ordered nanoplatelet array. As active sensors by directly converting applied mechanical actuations into electrical control signals without applying gate voltage, the ZnO 2DPT array has a great advantage as a fundamental component of piezotronics. The 2DPT array paves the way for a large-scale and integrated production of two terminal vertical transistors, which will contribute to its application in many fields such as human-machine interfacing, smart sensor, and processor systems.

Keywords: 2D piezotronic transistors; ZnO nanoplatelets; piezotronic effect; pressure sensitivity; resolution.