Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays

Wang, Zhong Lin; Song, Jinhui

doi:10.1126/science.1124005

Cited by 7,037 publications

(4,935 citation statements)

References 20 publications

Supporting

Mentioning

4,700

Contrasting

Unclassified

Order By: Relevance

“…Nanogenerators (NGs) are emerging as novel devices which can convert various kinds of ambient energy into electric power via piezoelectric,5 triboelectric,6, 7 or pyroelectric effect4 both in nanoscale and macroscale. As a typical piezoelectric nanomaterial, ZnO nanowire was found to demonstrate piezoelectric potential distributing along its c ‐axis when subjected to lateral bending or axial tension and compression, which is the basic mechanism of piezoelectric NGs 8, 9.…”

Section: Introductionmentioning

confidence: 99%

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

et al. 2015

View full text Add to dashboard Cite

A piezoelectric paper based on BaTiO3 (BTO) nanoparticles and bacterial cellulose (BC) with excellent output properties for application of nanogenerators (NGs) is reported. A facile and scalable vacuum filtration method is used to fabricate the piezoelectric paper. The BTO/BC piezoelectric paper based NG shows outstanding output performance with open‐circuit voltage of 14 V and short‐circuit current density of 190 nA cm−2. The maximum power density generated by this unique BTO/BC structure is more than ten times higher than BTO/polydimethylsiloxane structure. In bending conditions, the NG device can generate output voltage of 1.5 V, which is capable of driving a liquid crystal display screen. The improved performance can be ascribed to homogeneous distribution of piezoelectric BTO nanoparticles in the BC matrix as well as the enhanced stress on piezoelectric nanoparticles implemented by the unique percolated networks of BC nanofibers. The flexible BTO/BC piezoelectric paper based NG is lightweight, eco‐friendly, and cost‐effective, which holds great promises for achieving wearable or implantable energy harvesters and self‐powered electronics.

show abstract

Section: Introductionmentioning

confidence: 99%

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Until now, many semiconductor NWs/NBs have been successfully applied in nanodevices, including nanolasers, 1 nanogenerators, 2 and various chemical and biological nanosensors. 3,4 Well-known humidity control is very important for many fields in technology and our daily life.…”

mentioning

confidence: 99%

High-Sensitivity Humidity Sensor Based on a Single SnO₂ Nanowire

et al. 2007

Self Cite

View full text Add to dashboard Cite

Nanowires (NWs) and nanobelts (NBs) are considered as ideal building blocks for constructing nanosized devices due to high surface to volume ratio and their special physical and chemical properties resulting from the reduced sizes. Until now, many semiconductor NWs/NBs have been successfully applied in nanodevices, including nanolasers, 1 nanogenerators, 2 and various chemical and biological nanosensors. 3,4 Well-known humidity control is very important for many fields in technology and our daily life. In the past years, many detection techniques have been explored from old wet and dry bulb thermometry to modern capacitive, resistive, and thermal conductive moisture detectors. In order to further promote the sensitivity, selectivity, chemical and thermal stability, intensive efforts have been put in the exploration of a humidity sensor based on nanostructured materials such as carbon nanotubes, 5 metal oxide nanoparticles, 6 and NW films. 7 Being an important n-type semiconductor with a wide band gap (E g ) 3.6 eV at 300 K), SnO 2 possesses many unique optical and electrical properties: remarkable receptivity variation in gaseous environment, high optical transparency in the visible range (up to 97%), low resistivity (10 -4 to 10 6 Ω‚cm -1 ), and excellent chemical stability. These properties make SnO 2 NWs/NBs well suited for chemical sensors and transparent conducting electrodes. To date, many nanodevices based on SnO 2 NWs/NBs have been fabricated, including field effect transistors (FET), 8 field emissions, 9 UV sensors, 10 and gas sensors. 3a,11 In this communication, we present a new type of SnO 2 nanodevice, a humidity detector using a single SnO 2 NW as the sensing unit. This new type of SnO 2 NW-based sensor has fast and sensitive response to relative humidity (RH) in air from a wide range of environments at room temperature (30°C). In addition, it has relatively good reproducibility, and its linear response to RH makes it to calibrate.Single-crystalline SnO 2 NWs to be used as humidity sensors were synthesized by chemical vapor deposition (CVD) using Au nanoparticles as catalysts in a homemade synthetic apparatus. 12 Experimental details are available in Supporting Information. Figure 1a is a typical SEM image of as-synthesized NWs with high yield. The XRD pattern indicates that the NWs are rutile structured SnO 2 with a good crystallinity ( Figure S1). The diameter of SnO 2 NWs ranges from 50 to 300 nm, and the length of SnO 2 NWs is up to tens of micrometers. Low-magnification TEM image (upper inset of Figure 1a) and corresponding EDS analysis ( Figure S2) show that a Au nanoparticle exists at the tip of the SnO 2 NW, which is the representative characteristic of the vapor-liquid-solid (VLS) growth mechanism. 13 The selective area electron diffraction (SAED, lower inset of Figure 1a) pattern taken from the body of the SnO 2 NW reveals that the as-synthesized SnO 2 NW is single crystalline and grows along the [001] direction.Cathodoluminescence (CL) analysis is a suitable technique to determine th...

show abstract

“…7,8 Growth of aligned ZnO NWs has been achieved on GaN via physical vapor deposition (PVD) at a high temperature of 500-800°C, with the use of gold as a catalyst, 9 in which the catalyst initiated and guided the growth, and the epitaxial orientation relationship between the ZnO NWs and the GaN substrate led to the aligned growth. This strategy may have the risk of introducing catalyst residual atoms into the ZnO NWs, which is incompatible with silicon technology.…”

mentioning

confidence: 99%

Patterned Growth of Vertically Aligned ZnO Nanowire Arrays on Inorganic Substrates at Low Temperature without Catalyst

et al. 2008

Self Cite

View full text Add to dashboard Cite

Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays

Cited by 7,037 publications

References 20 publications

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

High-Sensitivity Humidity Sensor Based on a Single SnO₂ Nanowire

Patterned Growth of Vertically Aligned ZnO Nanowire Arrays on Inorganic Substrates at Low Temperature without Catalyst

Contact Info

Product

Resources

About

Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays

Cited by 7,037 publications

References 20 publications

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO3 Nanoparticles and Bacterial Cellulose

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO3 Nanoparticles and Bacterial Cellulose

High-Sensitivity Humidity Sensor Based on a Single SnO2 Nanowire

Patterned Growth of Vertically Aligned ZnO Nanowire Arrays on Inorganic Substrates at Low Temperature without Catalyst

Contact Info

Product

Resources

About

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO₃ Nanoparticles and Bacterial Cellulose

High-Sensitivity Humidity Sensor Based on a Single SnO₂ Nanowire