纳米发生器
纳米复合材料
材料科学
光电探测器
发光
聚合物
聚合物纳米复合材料
光电子学
纳米技术
复合材料
压电
作者
B. P. Mahadevaswamy,Rumana Farheen Sadage Muktar Ahmed,V. Yashaswini,B S Madhukar,Sangamesh M. A,Rajanna Kavya,Krishnaveni Sannathammegowda
摘要
The exploration of innovative materials and their integration into mechanical energy harvesters represents a crucial step in addressing futuristic energy requirements. In the present work, 0D-cesium lead bromide (Cs4PbBr6) perovskite is synthesized by a modified re-precipitation technique and purposed as a dopant in polymer at active layer of nanogenerators due to its well-defined rhombohedral crystal structure and high charge carrier mobility. The prepared Cs4PbBr6 are embedded into polyvinylidene difluoride (PVDF) polymer matrix to complement the piezo-tribo properties with synergetic effect of the materials (PVDF and 0-D Cs4PbBr6). The successful synthesis of Cs4PbBr6 and nanocomposites with varying filler quantities of Cs4PbBr6 (0.00, 0.25, 0.50, 1.00, and 2.00 wt/w%) are associated with analytical characterizations viz, TEM, P-XRD, SEM with EDS and electrical properties. The perovskite-based hybrid nanogenerators (P-HNGs) were fabricated and electrically optimized, which reveals the enhancement performance. Interestingly, the device with 2.00 wt/wt% Cs4PbBr6 witnessed greater peak-peak voltage and current of about 3.27 and 3.59 folds higher than the pristine polymer. Further, the device is used to powering LEDs, charge capacitors, and operates a digital calculator. In addition, the photoluminescent property of the perovskites is brought into the practical application as a self-powered Uv-photosensor using a UV light chamber. Overall in this research work, the employability of green luminescent Cs4PbBr6 is studied in the area of mechanical energy harvesting that paves the way towards research and innovation in perovskite-based self-powered technologies.
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