Methylammonium Lead Iodide Incorporated Poly(vinylidene fluoride) Nanofibers for Flexible Piezoelectric-Pyroelectric Nanogenerator

Ayesha Sultana, Sujoy Kumar Ghosh, Md Mehebub Alam, Priyabrata Sadhukhan, Krittish Roy, Mengying Xie, Chris R. Bowen, Subrata Sarkar, Sachindranath Das, Tapas Ranjan Middya, Dipankar Mandal

Research output: Contribution to journalArticlepeer-review

63 Citations (SciVal)


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 languageEnglish
Pages (from-to)27279-27287
Number of pages9
JournalACS Applied Materials and Interfaces
Issue number30
Early online date2 Jul 2019
Publication statusPublished - 31 Jul 2019


  • methylammonium lead iodide
  • nanogenerator
  • perovskite
  • piezoelectricity
  • PVDF
  • pyroelectricity
  • temperature sensor

ASJC Scopus subject areas

  • Materials Science(all)


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