A dynamic method for the measurement of pyroelectric properties of materials

Ghane-Motlagh, R; Kroener, Michael; Goldschmidtboeing, Frank; Danilewsky, A.N.; Woias, Peter

doi:10.1088/1361-665x/aac0b3

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…This indicates a diffuse phase transition, which is expected to occur for nanocrystals randomly oriented inside a polymer matrix. The pyroelectric coefficient value obtained is within the same order of magnitude as that reported for the state-of-the-art semiorganic ferroelectric triglycine sulfate (TGS) single crystal, reported being 306 × 10 − 6 Cm − 2 k − 1 at the ferroelectric–paraelectric phase transition [ 43 ].…”

Section: Resultssupporting

confidence: 77%

Lead-Free MDABCO-NH4I3 Perovskite Crystals Embedded in Electrospun Nanofibers

et al. 2022

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In this work, we introduce lead-free organic ferroelectric perovskite N-methyl-N′-diazabicyclo[2.2.2]octonium)–ammonium triiodide (MDABCO-NH4I3) nanocrystals embedded in three different polymer fibers fabricated by the electrospinning technique, as mechanical energy harvesters. Molecular ferroelectrics offer the advantage of structural diversity and tunability, easy fabrication, and mechanical flexibility. Organic–inorganic hybrid materials are new low-symmetry emerging materials that may be used as energy harvesters because of their piezoelectric or ferroelectric properties. Among these, ferroelectric metal-free perovskites are a class of recently discovered multifunctional materials. The doped nanofibers, which are very flexible and have a high Young modulus, behave as active piezoelectric energy harvesting sources that produce a piezoelectric voltage coefficient up to geff = 3.6 VmN−1 and show a blue intense luminescence band at 325 nm. In this work, the pyroelectric coefficient is reported for the MDABCO-NH4I3 perovskite inserted in electrospun fibers. At the ferroelectric–paraelectric phase transition, the embedded nanocrystals display a pyroelectric coefficient as high as 194 × 10−6 Cm−2k−1, within the same order of magnitude as that reported for the state-of-the-art bulk ferroelectric triglycine sulfate (TGS). The perovskite nanocrystals embedded into the polymer fibers remain stable in their piezoelectric output response, and no degradation is caused by oxidation, making the piezoelectric perovskite nanofibers suitable to be used as flexible energy harvesters.

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Section: Resultssupporting

confidence: 77%

Lead-Free MDABCO-NH4I3 Perovskite Crystals Embedded in Electrospun Nanofibers

et al. 2022

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“…This indicates a diffuse phase transition, which is expected to occur for nanocrystals randomly oriented inside a polymer matrix. The pyroelectric coefficient value obtained is within the same order of magnitude as that reported for the state-of-theart semiorganic ferroelectric triglycine sulfate (TGS) single crystal, reported to be 306×10 -6 Cm -2 k -1 [34].…”

Section: Pyroelectricity In Fiberssupporting

confidence: 81%

Pyroelectric and Piezoelectric Voltage Coefficients of Blue Luminescent Organic Lead-Free Perovskite MDABCO-NH<sub>4</sub>I<sub>3</sub> Electrospun Nanofibers

Batista¹,

Moreira²,

Silva³

et al. 2022

Preprint

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Lead-free ferroelectric perovskite N-methyl-N'-diazabicyclo[2.2.2]octonium)–ammonium triio-dide, MDABCO-NH4I3, nanocrystals are embedded in three different polymer fibers fabricated by the electrospinning technique. The nanofibers, which are very flexible and have a high Young modulus, behave as active piezoelectric energy harvesting sources that produce a piezoelectric voltage coefficient up to geff = 3.6 VmN-1 and show a blue intense luminescence band at 325 nm. In this work, the pyroelectric coefficient is reported for the MDABCO-NH4I3 perovskite inserted in electrospun fibers. At the ferroelectric-paraelectric phase transition, the embedded nanocrystals display a pyroelectric coefficient as high as 194×10-6 Cm-2k-1, within the same order of magnitude as that reported for the state-of-the-art bulk ferroelectric triglycine sulfate (TGS). The perovskite nanocrystals embedded into the polymer fibers remain stable, and no degradation is caused by oxidation.

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“…These pyroelectric coefficient values are roughly four times higher than that reported for electrospun poly(vinyl alcohol) (PVA) nanofibers doped with the hydrogen bonded molecular ferroelectric 1,4-diazabicyclo [2.2.2]-octane perrhenate (dabcoHReO 4 ), which is 8.5 × 10 −6 Cm −2 k −1 at 300 K [ 35 ]. Remarkably, the pyroelectric coefficient of polycrystalline dipeptide Cyclo (L-Trp-L-Trp) embedded into polymer fibers is only one order of magnitude smaller than that reported for the state-of-the-art semiorganic ferroelectric triglycine sulfate (TGS) oriented single crystal, reported to be 306 × 10 −6 Cm −2 k −1 at the ferroelectric-paraelectric phase transition (322 K) [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Bioinspired Cyclic Dipeptide Functionalized Nanofibers for Thermal Sensing and Energy Harvesting

et al. 2023

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Nanostructured dipeptide self-assemblies exhibiting quantum confinement are of great interest due to their potential applications in the field of materials science as optoelectronic materials for energy harvesting devices. Cyclic dipeptides are an emerging outstanding group of ring-shaped dipeptides, which, because of multiple interactions, self-assemble in supramolecular structures with different morphologies showing quantum confinement and photoluminescence. Chiral cyclic dipeptides may also display piezoelectricity and pyroelectricity properties with potential applications in new sources of nano energy. Among those, aromatic cyclo-dipeptides containing the amino acid tryptophan are wide-band gap semiconductors displaying the high mechanical rigidity, photoluminescence and piezoelectric properties to be used in power generation. In this work, we report the fabrication of hybrid systems based on chiral cyclo-dipeptide L-Tryptophan-L-Tryptophan incorporated into biopolymer electrospun fibers. The micro/nanofibers contain self-assembled nano-spheres embedded into the polymer matrix, are wide-band gap semiconductors with 4.0 eV band gap energy, and display blue photoluminescence as well as relevant piezoelectric and pyroelectric properties with coefficients as high as 57 CN−1 and 35×10−6 Cm−2K−1, respectively. Therefore, the fabricated hybrid mats are promising systems for future thermal sensing and energy harvesting applications.

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A dynamic method for the measurement of pyroelectric properties of materials

Cited by 12 publications

References 15 publications

Lead-Free MDABCO-NH4I3 Perovskite Crystals Embedded in Electrospun Nanofibers

Lead-Free MDABCO-NH4I3 Perovskite Crystals Embedded in Electrospun Nanofibers

Pyroelectric and Piezoelectric Voltage Coefficients of Blue Luminescent Organic Lead-Free Perovskite MDABCO-NH<sub>4</sub>I<sub>3</sub> Electrospun Nanofibers

Bioinspired Cyclic Dipeptide Functionalized Nanofibers for Thermal Sensing and Energy Harvesting

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