alexa Nano Size Related Piezoelectric Efficiency in a Large Z
ISSN: 2161-1009

Biochemistry & Analytical Biochemistry
Open Access

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Research Article

Nano Size Related Piezoelectric Efficiency in a Large ZnO Thin Film, Potential for Self-Powered Medical Device Application

YuTong Li, Zhiqang Gao, Wei Wei Qin, Qiu Jun Wen, Ma Xian Jun, Wei Du, Xiaoqiang Chen, Hu Xue Feng* and Wei Zhang*

State Key Laboratory of Material-oriented Chemical Engineering and School of Chemical Engineering, Nanjing Tech University, PR China

*Corresponding Author:
Wei Zhang
State of Key Laboratory of Materialsoriented
Chemical Engineering and School of Chemical Engineering
Nanjing Tech University, Nanjing, Jiangsu, 210009, PR China
Tel: 86 25-83587060

Xuefeng Hu
State of Key Laboratory of Materials-oriented
Chemical Engineering and School of Chemical Engineering
Nanjing Tech University, Nanjing, Jiangsu, 210009, PR. China

Received Date: January 08, 2016; Accepted Date: January 27, 2016; Published Date: January 30, 2016

Citation: Li Y, Gao Z, Qin WW, Wen QJ, Jun MX, et al. (2016) Nano Size Related Piezoelectric Efficiency in a Large ZnO Thin Film, Potential for Self-Powered Medical Device Application. Biochem Anal Biochem 5:243. doi:10.4172/2161-1009.1000243

Copyright: © 2016 Li Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Large-area piezoelectric ZnO films with different gran size has been synthesized by sol-gel technique using different annealing temperatures from 550 to 700°C. The piezoelectric efficiency (PE) of those deposited films is characterized by Piezoelectric Force Microscopy (PFM). All synthesized films exhibit a crystal structure. The width of the rock curve of [0002] characterized by x-ray diffraction decreases with the annealing temperature, suggesting a better c-axis orientated ZnO film formed at higher annealing temperature. The grain size of the grown films are found to continuously increase from 20 to 60 nm when the annealing temperatures increase from 550 to 700°C. The piezoelectric efficiency (PE, d33) of the films exhibit strong grain size dependence, i.e., the PE initially increase with the annealing temperature and then decreasing with a further annealing temperature increased. The maximum PE value appears in the film annealed at 650°C. The peculiar piezoelectric properties (d33) can be explained by the competing between the crystalline, which favors a larger d33 due to the enhanced dipole polarization, and the grain size, which results in a piezoforce release at large grain size due to domain wall size and motion.

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