期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 47, 页码 5868-5874出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201300593
关键词
piezotronic effect; ZnO nanowires; glucose sensors; self-powered; triboelectric nanogenerators
类别
资金
- NSF
- BES DOE [DE-FG02-07ER46394]
- Knowledge Innovation Program of the Chinese Academy of Science [KJCX2-YW-M13]
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.
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