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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rao, V. Ramgopal | - |
dc.date.accessioned | 2023-10-21T05:26:41Z | - |
dc.date.available | 2023-10-21T05:26:41Z | - |
dc.date.issued | 2019-03 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsenergylett.9b00323 | - |
dc.identifier.uri | http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12569 | - |
dc.description.abstract | In this work, we report a lead-free hybrid halide perovskite system with a very high piezoelectric charge density for applications in nanogenerators. We use materials engineering by incorporation of formamidinium tin iodide, FASnI3, in a soft polymer (polyvinylidene fluoride, PVDF) matrix and demonstrate high-performance large-area flexible piezoelectric nanogenerators. This is achieved by using self-poled thin films of a FASnI3:PVDF nanocomposite. The fabricated devices show an output voltage up to ∼23 V and power density of 35.05 mW cm–2 across a 1 MΩ resistor, under a periodic vertical compression, with a release pressure of ∼0.1 MPa. Measured values of the local piezoelectric coefficient (d33) of these films reach up to 73 pm/V. We provide the microscopic mechanism using first-principles calculations, which suggest that a soft elastic nature and soft polar optic phonons are responsible for the high piezoelectric response of FASnI3. Our studies open up a route to high-performance nanogenerators using a lead-free organic–inorganic halide perovskite family of materials. | en_US |
dc.language.iso | en | en_US |
dc.publisher | ACS | en_US |
dc.subject | EEE | en_US |
dc.subject | Microscopic | en_US |
dc.subject | Fluoropolymers | en_US |
dc.subject | Nanocomposites | en_US |
dc.subject | Nanogenerators | en_US |
dc.subject | Piezoelectrics | en_US |
dc.title | Microscopic Origin of Piezoelectricity in Lead-Free Halide Perovskite: Application in Nanogenerator Design | en_US |
dc.type | Article | en_US |
Appears in Collections: | Department of Electrical and Electronics Engineering |
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