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Organic-Inorganic Hybrid Ammonium Halogenobismuthates and their Piezoelectric Properties

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dc.contributor.advisor BOOMISHANKAR, RAMAMOORTHY
dc.contributor.author MEENA, NAMONARAYAN
dc.date.accessioned 2022-12-13T10:46:56Z
dc.date.available 2022-12-13T10:46:56Z
dc.date.issued 2022-12
dc.identifier.citation 40 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7501
dc.description.abstract Organic-inorganic hybrid perovskite materials have been widely used due to their unique properties, such as their biocompatibility, photovoltaic, piezo-, pyro- and ferroelectric properties. Their numerous utilizations include solar cells, charge storage capacitors, MEMS, field-effect transistors, resonators, sensors, etc., making them an exciting topic of research. Traditional lead oxide-based ferroelectrics are the most used materials for these applications, but they lead to certain environmental concerns regarding the recycling and disposal of devices. Additionally, literature has many polymers like polyvinylidene difluoride (PVDF) based nanogenerator devices with excellent output performances. But PVDF-based nanogenerators require external additives like poling, annealing etc., to enhance their mechanical outputs. Hence it is highly desirable to prepare all-organic or hybrid organicinorganic materials with mouldable optical properties and with no toxic metal ion contents for future generation electronics. Here in, we have synthesized two halogenobismuthates(III) molecular–ionic complexes with the general formula A2MX5 and A3M2X9, which are ferroelectric active and can find their extensive applications in piezoelectric nanogenerator devices. The compound [BrPhBnN(Me)2]2. [BiBr5] (1) and [BrPhMeBnN(Me)2]3.[Bi2Br9] (2) were crystallised in orthorhombic Pna21 and Pca21 space groups respectively. The composite nanogenerator devices of 1 and 2 in polylactic acid (PLA) gave maximum peakto-peak voltages (VPP) of 26.2 V and 24.2 V respectively. Also the maximum power density values were calculated to be 41.81 and 61.88 µW.cm-2 for the optimal 15 wt% 1-PLA and 10 wt% 2-PLA devices, respectively. For compound 1, 14 and 114 μC charges and 10 and 64 μJ of energy have been stored, respectively, for 10 and 100 μF capacitors. While for compound 2, 2.03 and 18.92 μC charges and 0.20 and 1.78 μJ of energy has been stored in 10 and 100 μF capacitors, respectively en_US
dc.language.iso en en_US
dc.subject Hybrid perovskite en_US
dc.subject Ammonium Salt en_US
dc.subject Ferroelectric en_US
dc.subject Piezoelectric en_US
dc.subject Energy harvesting en_US
dc.title Organic-Inorganic Hybrid Ammonium Halogenobismuthates and their Piezoelectric Properties en_US
dc.type Thesis en_US
dc.description.embargo no embargo en_US
dc.type.degree BS-MS en_US
dc.contributor.department Dept. of Chemistry en_US
dc.contributor.registration 20161134 en_US


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  • MS THESES [1705]
    Thesis submitted to IISER Pune in partial fulfilment of the requirements for the BS-MS Dual Degree Programme/MSc. Programme/MS-Exit Programme

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