Abstract
This work introduces a piezoelectric-pyroelectric nanogenerator (P-PNG) based on methylammonium lead iodide (CH3NH3PbI3) incorporated electrospun poly(vinylidene fluoride) (PVDF) nanofibers that are able to harvest mechanical and thermal energies. During the application of a periodic compressive contact force at a frequency of 4 Hz, an output voltage of ∼220 mV is generated. The P-PNG has a piezoelectric coefficient (d33) of ∼19.7 pC/N coupled with a high durability (60 000 cycles) and quick response time (∼1 ms). The maximum generated output power density (∼0.8 mW/m2) is sufficient to charge up a variety of capacitors, with the potential to replace an external power supply to drive portable devices. In addition, upon exposure to cyclic heating and cooling at a temperature of 38 K, a pyroelectric output current of 18.2 pA and a voltage of 41.78 mV were achieved. The fast response time of 1.14 s, reset time of 1.25 s, and pyroelectric coefficient of ∼44 pC/m2 K demonstrate a self-powered temperature sensing capability of the P-PNG. These characteristics make the P-PNG suitable for flexible piezoelectric-pyroelectric energy harvesting for self-powered electronic devices.
Original language | English |
---|---|
Pages (from-to) | 27279-27287 |
Number of pages | 9 |
Journal | ACS Applied Materials and Interfaces |
Volume | 11 |
Issue number | 30 |
Early online date | 2 Jul 2019 |
DOIs | |
Publication status | Published - 31 Jul 2019 |
Funding
This work was supported by the Science and Engineering Research Board (EEQ/2018/001130, SERB/1759/2014-15, and YSS/2015/000109), Govt. of India. Ayesha Sultana was supported by Maulana Azad National Fellowship (F1-17.1/2015-16/MANF-2015-17-WES-53885/(SA-III/Website)) from UGC. S.K.G., K.R. and P.S. were supported by INSPIRE fellowships IF130865, IF160559 and IF160132, respectively. The authors acknowledge Newton-Bhabha Ph.D. placement programme (Application number: 269390234) for conducting collaborative work. They also acknowledge instrumental facilities developed under FIST-II programme which is financially supported by DST, Govt. of India.
Keywords
- methylammonium lead iodide
- nanogenerator
- perovskite
- piezoelectricity
- PVDF
- pyroelectricity
- temperature sensor
ASJC Scopus subject areas
- General Materials Science