Enhanced performance of a ZnO nanowire-based self-powered glucose sensor by piezotronic effect

Ruomeng Yu, Caofeng Pan, Jun Chen, Guang Zhu, Zhong Lin Wang

Research output: Journal PublicationArticlepeer-review

155 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5868-5874
Number of pages7
JournalAdvanced Functional Materials
Volume23
Issue number47
DOIs
Publication statusPublished - 17 Dec 2013
Externally publishedYes

Keywords

  • glucose sensors
  • piezotronic effect
  • self-powered
  • triboelectric nanogenerators
  • ZnO nanowires

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

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