Enhanced Performance of a ZnO Nanowire‐Based Self‐Powered Glucose Sensor by Piezotronic Effect. (1st July 2013)

• Record Type: Journal Article
• Authors: Yu, Ruomeng; Pan, Caofeng; Chen, Jun; Zhu, Guang; Wang, Zhong Lin
• Is Part Of: Advanced functional materials. Volume 23:Number 47(2013)
• Page Start: 5868
• Page End: 5874
• Publication Date: 2013-07-01
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201300593
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A self‐powered, piezotronic effect‐enhanced glucose sensor based on metal‐semiconductor‐metal (M–S–M) structured single ZnO nanowire device is demonstrated. A triboelectrical nanogenerator (TENG) is integrated to build a self‐powered glucose monitoring system (GMS) to realize the continuously monitoring of glucose concentrations. The performance of the glucose sensor is generally enhanced by the piezotronic effect when applying a –0.79% compressive strain on the device, and magnitude of the output signal is increased by more than 200%; the sensing resolution and sensitivity of sensors are improved by more than 200% and 300%, respectively. A theoretical model using energy band diagram is proposed to explain the observed results. This work demonstrates a promising approach to raise the sensitivity, improve the sensing resolution, and generally enhance the performance of glucose sensors, also providing a possible way to build up a self‐powered GMS.</p> </abstract>