GaN nanowires for piezoelectric generators

Gogneau, N.; Chrétien, Pascal; Galopin, Élisabeth; Guilet, S.; Travers, Laurent; Harmand, J. C.; Houzé, Frédéric

doi:10.1002/pssr.201409105

Cited by 25 publications

(51 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…

1 Introduction Piezoelectric materials in nanoscale have attractive lots of attentions for their potential applications in micro-and nanoelectromechanical systems [1][2][3][4][5][6]. Two-dimensional (2D) monolayers of boron nitride (h-BN) [7,8], transition metal dichalcogenides (TMDCs) [8] and transition metal dioxides (TMDO) [9] were theoretically predicted to be intrinsically piezoelectric with large piezoelectric coefficients.

…”

mentioning

confidence: 99%

Piezoelectricity in two-dimensional group III-V buckled honeycomb monolayers

Gao

2017

Phys. Status Solidi RRL

View full text Add to dashboard Cite

We studied the elastic and piezoelectric properties of buckled honeycomb group III–V monolayers (GaP, GaAs, GaSb, InP, InAs and InSb) by DFT calculations. Those buckled monolayers are ferroelectric and have nonzero e11, e31, d11 and d31 piezoelectric coefficients. Our calculations show that those monolayers are good piezoelectric materials and a pronounced periodic trend of the piezoelectric coefficients e11, e31, d11 and d31 was found. Group III–V monolayers are promising candidates for future atomically thin piezoelectric applications such as transducers, sensors, and energy harvesting devices.

show abstract

“…

…”

mentioning

confidence: 99%

Piezoelectricity in two-dimensional group III-V buckled honeycomb monolayers

Gao

2017

Phys. Status Solidi RRL

View full text Add to dashboard Cite

show abstract

“…With an increasing energy demands, more and more new generators have been developed to harvest ambient environment energy, which show potential applications in daily life, industrial plants, agriculture, and military. Many generators with different converting mechanism have been reported, such as electromagnetic generators, piezoelectric generators, electrostatic generators, and triboelectric nanogenerators . Triboelectric nanogenerators have shown advantages of a low fabrication cost, high output voltage, and high energy conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

Triboelectric–Thermoelectric Hybrid Nanogenerator for Harvesting Energy from Ambient Environments

Kuang

et al. 2018

Adv Materials Technologies

View full text Add to dashboard Cite

with different converting mechanism have been reported, such as electromagnetic generators, [4,5] piezoelectric generators, [6][7][8] electrostatic generators, [9][10][11] and triboelectric nanogenerators. [12][13][14] Triboelectric nanogenerators have shown advantages of a low fabrication cost, high output voltage, and high energy conversion efficiency. However, heat energy is produced and wasted during the triboelectric energy generation process, which limits the output of triboelectric nanogenerators (TENG). [15] On the one hand, noncontact approaches have been used to minimize the energy loss of TENG. On the other hand, it is possible to scavenge the lost energy to improve the output performance of TENG. [16,17] Although pyroelectric nanogenerators harvesting thermal energy from the friction-induced temperature fluctuation have been reported, different thermal harvesting efforts are still needed to enhance the total efficiency of the generators that integrates the energy harvesters and the energy storage devices. [18][19][20] Here, we present triboelectric-thermoelectric hybrid nanogenerator (TTENG), which can harvest mechanical and thermal energy. The TTENG is composed of a 2D rotary TENG Recently developed triboelectric nanogenerators (TENG) with advantages of a low fabrication cost, high output voltage, and high energy conversionefficiency have shown potential applications in harvesting ambient environment energy. However, the heat energy produced and wasted during the triboelectric energy generation process limits the output of TENG. One approach is to design TENG based on a noncontact mode to minimize the energy loss. The other approach is to scavenge the lost energy with a supplementary nanogenerator. In this work, triboelectric-thermoelectric hybrid nanogenerator (TTENG) is fabricated to harvest the energy from ambient environment and the thermal energy from the temperature difference induced by r-TENG friction. At a rotation rate of 500 rpm, r-TENG can produce a constant open-circuit voltage (V oc ) of 200 V and a short-circuit current (I sc ) of 0.06 mA. The thermoelectric nanogenerator (TMENG) with a size of 16 cm 2 can produce a V oc of 0.2 V and an I sc of 20 mA. The experimental results show that the TTENG is a promising method to harvest the ambient mechanical energy. Hybrid NanogeneratorThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

show abstract

“…Concerning individual NWs, optical measurements used commonly in microelectromechanical systems (MEMS) are not easily applicable to the NW resonators because the diameter is less than the visible wavelength. Atomic force microscopy (AFM) has been used to measure the Young modulus of individual NWs [8,9]. Alternatively, transmission electron microscopy (TEM) permits direct and quantitative determination of mechanical resonances by applying an actuating signal between the nanowire and a counter-electrode [7].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Effective Elastic Properties of Nitride NWs/Polymer Composite Materials Using Laser-Generated Surface Acoustic Waves

et al. 2018

View full text Add to dashboard Cite

In this paper we demonstrate a high potential of transient grating method to study the behavior of surface acoustic waves in nanowires-based composite structures. The investigation of dispersion curves is done by adjusting the calculated dispersion curves to the experimental results. The wave propagation is simulated using the explicit integral and asymptotic representations for laser-generated surface acoustic waves in layered anisotropic waveguides. The analysis of the behavior permits to determine all elastic constants and effective elastic moduli of constituent materials, which is important both for technological applications of these materials and for basic scientific studies of their physical properties.

show abstract

GaN nanowires for piezoelectric generators

Cited by 25 publications

References 27 publications

Piezoelectricity in two-dimensional group III-V buckled honeycomb monolayers

Piezoelectricity in two-dimensional group III-V buckled honeycomb monolayers

Triboelectric–Thermoelectric Hybrid Nanogenerator for Harvesting Energy from Ambient Environments

Evaluation of Effective Elastic Properties of Nitride NWs/Polymer Composite Materials Using Laser-Generated Surface Acoustic Waves

Contact Info

Product

Resources

About