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In situ-grown organo-lead bromide perovskite-induced electroactive γ-phase in aerogel PVDF films: an efficient photoactive material for piezoelectric energy harvesting and photodetector applications
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/02 , DOI: 10.1039/d0nr00090f Suman Kumar Si 1, 2, 3, 4 , Sarbaranjan Paria 1, 2, 3, 4 , Sumanta Kumar Karan 1, 2, 3, 4 , Suparna Ojha 1, 2, 3, 4 , Amit Kumar Das 1, 2, 3, 4 , Anirban Maitra 1, 2, 3, 4 , Aswini Bera 1, 2, 3, 4 , Lopamudra Halder 1, 2, 3, 4 , Anurima De 1, 2, 3, 4 , Bhanu Bhusan Khatua 1, 2, 3, 4
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/02 , DOI: 10.1039/d0nr00090f Suman Kumar Si 1, 2, 3, 4 , Sarbaranjan Paria 1, 2, 3, 4 , Sumanta Kumar Karan 1, 2, 3, 4 , Suparna Ojha 1, 2, 3, 4 , Amit Kumar Das 1, 2, 3, 4 , Anirban Maitra 1, 2, 3, 4 , Aswini Bera 1, 2, 3, 4 , Lopamudra Halder 1, 2, 3, 4 , Anurima De 1, 2, 3, 4 , Bhanu Bhusan Khatua 1, 2, 3, 4
Affiliation
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The unique combination of piezoelectric energy harvesters and light detectors progressively strengthens their application in the development of modern electronics. Here, for the first time, we fabricated a polyvinylidene fluoride (PVDF) and formamidinium lead bromide nanoparticle (FAPbBr3 NP)-based composite aerogel film (FAPbBr3/PVDF) for harvesting electrical energy and photodetector applications. The uniform distribution of FAPbBr3 NPs in FAPbBr3/PVDF was achieved via the in situ synthesis of FAPbBr3 NPs in the PVDF matrix, which led to the stabilization of the γ-phase. The freeze-drying process induced an interconnected porous architecture in the composite film, making it more sensitive to small mechanical stimuli. Owing to this unique fabrication technique, the constructed aerogel film-based nanogenerator (FPNG) exhibited an output voltage and current of ∼26.2 V and ∼2.1 μA, respectively, which were 5-fold higher than that of the nanogenerator with the pure PVDF film. Also, the sensitivity of FPNG upon the irradiation of light was demonstrated by the output voltage reduction of ∼38%, indicating its capability as a light sensing device. Furthermore, the prepared FAPbBr3/PVDF composite was found to be an efficient candidate for light detection applications. A simple planar photodetector was fabricated with the 8.0 wt% FAPbBr3 NP-loaded PVDF composite, which displayed very high responsivity (8 A/W) and response speed of 2.6 s. Thus, this exclusive combination of synthesis and fabrication for the preparation of electro-active films opens a new horizon in the piezoelectric community for effective energy harvesting and light detector applications.
中文翻译：
气凝胶PVDF薄膜中原位生长的有机铅溴化物钙钛矿诱导的电活性γ相：一种用于压电能量收集和光电探测器应用的有效光敏材料
压电式能量收集器和光检测器的独特结合逐步增强了它们在现代电子技术发展中的应用。在这里，我们首次制造了聚偏二氟乙烯（PVDF）和甲form溴化铅纳米颗粒（FAPbBr 3 NP）基复合气凝胶膜（FAPbBr 3 / PVDF），用于收集电能和光电探测器应用。FAPbBr的均匀分布3周的NP在FAPbBr 3 / PVDF达到通过所述原位合成FAPbBr的3PVDF基质中的NP导致γ相的稳定。冷冻干燥过程在复合膜中引起了相互连接的多孔结构，使其对小的机械刺激更加敏感。由于这种独特的制造技术，所构造的基于气凝胶膜的纳米发电机（FPNG）的输出电压和电流分别为〜26.2 V和〜2.1μA，比带有纯PVDF膜的纳米发电机的输出电压和电流高5倍。 。另外，FPNG对光照射的敏感性通过〜38％的输出电压降低证明，表明了其作为光敏器件的能力。此外，制备的FAPbBr 3发现/ PVDF复合材料是光检测应用的有效候选者。用8.0 wt％的FAPbBr 3 NP负载的PVDF复合材料制造了一个简单的平面光电探测器，该复合材料显示出非常高的响应度（8 A / W）和2.6 s的响应速度。因此，这种用于制备电活性膜的合成与制造的独特结合为有效的能量收集和光探测器应用打开了压电领域的新视野。
更新日期：2020-04-03
中文翻译：
气凝胶PVDF薄膜中原位生长的有机铅溴化物钙钛矿诱导的电活性γ相：一种用于压电能量收集和光电探测器应用的有效光敏材料
压电式能量收集器和光检测器的独特结合逐步增强了它们在现代电子技术发展中的应用。在这里，我们首次制造了聚偏二氟乙烯（PVDF）和甲form溴化铅纳米颗粒（FAPbBr 3 NP）基复合气凝胶膜（FAPbBr 3 / PVDF），用于收集电能和光电探测器应用。FAPbBr的均匀分布3周的NP在FAPbBr 3 / PVDF达到通过所述原位合成FAPbBr的3PVDF基质中的NP导致γ相的稳定。冷冻干燥过程在复合膜中引起了相互连接的多孔结构，使其对小的机械刺激更加敏感。由于这种独特的制造技术，所构造的基于气凝胶膜的纳米发电机（FPNG）的输出电压和电流分别为〜26.2 V和〜2.1μA，比带有纯PVDF膜的纳米发电机的输出电压和电流高5倍。 。另外，FPNG对光照射的敏感性通过〜38％的输出电压降低证明，表明了其作为光敏器件的能力。此外，制备的FAPbBr 3发现/ PVDF复合材料是光检测应用的有效候选者。用8.0 wt％的FAPbBr 3 NP负载的PVDF复合材料制造了一个简单的平面光电探测器，该复合材料显示出非常高的响应度（8 A / W）和2.6 s的响应速度。因此，这种用于制备电活性膜的合成与制造的独特结合为有效的能量收集和光探测器应用打开了压电领域的新视野。
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